Screenshots for #238 (player water physics, Mac mini, offscreen)

.claude/skills/vanilla-parity/SKILL.md

@@ -1,76 +0,0 @@
----
-name: vanilla-parity
-description: Fix a Horizon bug or gap so it behaves 1:1 like vanilla 26.3, starting from the port ledger (tools/port_ledger.py) instead of grepping. Use for any issue, Discord report or PR that makes Horizon match vanilla: "X doesn't work like in Java", a missing sound, particle, animation, mob behaviour, block rule, screen or packet.
----
-
-# Vanilla parity with the port ledger
-
-The port ledger pairs every vanilla method with the Rust fn that ports it (or says it is missing, or needs
-no port) and lists where a port isn't wired like vanilla. Ask it first; grep only for what it can't answer.
-Full reference: `docs/port-ledger.md`.
-
-## 0. Have a fresh ledger
-
-```sh
-python3 tools/port_ledger.py build          # ~20 s; again after pulling main
-```
-
-It needs the vanilla jar (the launcher's `versions/26.3/26.3.jar`, or `--jar`) and/or the lab's decompiled
-sources (`python3 tools/lab.py decompile`, or `--sources DIR`). If `build` says it has no vanilla code, run
-the lab first; don't guess vanilla from memory.
-
-## 1. From the report to the code
-
-```sh
-python3 tools/port_ledger.py issue 3236                      # a GitHub issue number
-python3 tools/port_ledger.py issue "mooshroom stays red after lightning"   # or the report's text
-```
-
-It ranks the vanilla classes the report names and lists, per class, its Rust home files, where each method is
-ported, and the known gaps (`missing` rows from the verdict map, seam/client/drift gaps). Often the cause is
-already written there ("Type is not saved"). Then drill in:
-
-```sh
-python3 tools/port_ledger.py where MushroomCow.readAdditionalSaveData   # ports, callers, callees, gaps
-python3 tools/port_ledger.py class MushroomCow                          # every method: where, or missing
-python3 tools/port_ledger.py what crates/horizon-client/src/mobs/farm.rs:120   # which vanilla method a fn ports
-```
-
-A ledger answer is a lead, not a verdict: about 1 in 12 map rows is wrong. Read the vanilla method (path and
-line are in the output) and the Rust fn before changing anything.
-
-## 2. Port it the vanilla way
-
-- Translate the vanilla method, don't reinvent it: same order of operations, same constants, the same random
-  draws in the same order (`horizon_core::random`), Java `Math` through `horizon_core::jmath`.
-- Open the fn's doc with the vanilla method it ports: `` /// `MushroomCow.readAdditionalSaveData`: ... ``.
-  That one line is what makes the next agent find it.
-- Fix the path players run: single player is a client of the integrated server, so server logic lives in
-  `game/lan*.rs` and `src/lan/`, and what only the client's copy shows (particles, local sounds, hand
-  animation) must be reached from `game/remote*.rs`.
-- Look at the neighbours the ledger lists for the same class: a `client` or `seam` gap next to your fix is
-  usually the same bug on the other path.
-
-## 3. Before the PR
-
-```sh
-python3 tools/port_ledger.py check --base origin/main
-```
-
-It lists the ports your branch touches with their open gaps, citations to add, stale citations, and (against
-the base) the gaps the branch closes and opens. Close what belongs to your fix, cite what you ported, leave
-no new stale citation. If you ported a method the verdict map called `missing`, change its row in
-`tools/port_map/*.tsv` to `port` with the fn (`file.rs::Owner::fn`) and run
-`python3 tools/port_ledger.py map-check tools/port_map/<file>.tsv`.
-
-Then the usual: the harness for the area (`docs/architecture.md`), `cargo check`/tests per `AGENTS.md`, and
-a small PR that says which vanilla method it now matches.
-
-## Finding work
-
-```sh
-python3 tools/port_ledger.py gaps --kind seam      # ported on two paths, wired on one: the best leads
-python3 tools/port_ledger.py gaps --kind client    # client-only effects the server path never reaches
-python3 tools/port_ledger.py gaps --kind drift     # a port missing a sound, particle, item or constant
-rg -n "player:" tools/port_map/*.tsv               # missing behaviour a player would see
-```

.dockerignore

@@ -1,7 +0,0 @@
-# Docker builds (the relay) need the Rust sources only.
-target/
-.local/
-**/node_modules/
-benchmarks/
-packs/
-mods/

.gitattributes

@@ -1,6 +0,0 @@
-# Generated files that tests compare byte for byte with what they generate: LF on every OS, also
-# where Git for Windows' core.autocrlf would check them out with CRLF.
-docs/launcher-commands.md text eol=lf
-docs/horizon-ctl-commands.md text eol=lf
-crates/horizon-theme/tokens.css text eol=lf
-docs/api/*-reference.md text eol=lf

.githooks/pre-commit

@@ -1,11 +0,0 @@
-#!/bin/sh
-# Git for Windows puts a `python3` on PATH that is only the Microsoft Store
-# stub: it prints "Python" and exits non-zero, so the hook fails with no other
-# output. Use the first name that actually runs Python 3.
-for py in python3 python py; do
-    if "$py" -c "import sys; sys.exit(sys.version_info < (3,))" >/dev/null 2>&1; then
-        exec "$py" tools/check_public_tree.py
-    fi
-done
-echo "check_public_tree: no working Python 3 found" >&2
-exit 1

.githooks/pre-push

@@ -1,11 +0,0 @@
-#!/bin/sh
-# Git for Windows puts a `python3` on PATH that is only the Microsoft Store
-# stub: it prints "Python" and exits non-zero, so the hook fails with no other
-# output. Use the first name that actually runs Python 3.
-for py in python3 python py; do
-    if "$py" -c "import sys; sys.exit(sys.version_info < (3,))" >/dev/null 2>&1; then
-        exec "$py" tools/check_public_tree.py --pre-push
-    fi
-done
-echo "check_public_tree: no working Python 3 found" >&2
-exit 1

.github/CODEOWNERS

@@ -1,16 +0,0 @@
-# Changes to these files wait for Ludovic's review once branch protection requires code owners' reviews
-# (tools/ci/protect_pipeline.sh, docs/security.md). They are what builds, signs and ships releases, the code that
-# checks downloads before installing them (backend.rs downloads, installs and updates the launcher itself; links.json
-# says where from; the Cargo.toml files pick the crates that do it), and this file. Everything else merges as soon as
-# `verify` passes.
-/.github/                                @ludovic111
-/tools/ci/                               @ludovic111
-/tools/release_train.py                  @ludovic111
-/crates/horizon-release-sign/            @ludovic111
-/crates/horizon-server/src/update.rs     @ludovic111
-/crates/horizon-server/Cargo.toml        @ludovic111
-/launcher/src/signed.rs                  @ludovic111
-/launcher/src/backend.rs                 @ludovic111
-/launcher/links.json                     @ludovic111
-/launcher/Cargo.toml                     @ludovic111
-/packaging/                              @ludovic111

.github/actionlint.yaml

@@ -1,4 +0,0 @@
-self-hosted-runner:
-  # The Mac mini's runner (ludovics-mac-mini), which holds the maintainer's own Minecraft files.
-  # windows-11-vs2026-arm is GitHub's Windows ARM64 image (2026-08), newer than actionlint's label list.
-  labels: [horizon-game, ludovics-mac-mini, windows-11-vs2026-arm]

.github/pull_request_template.md

@@ -1,39 +0,0 @@
-<!-- Opened by an AI agent? First line: "> 🤖 Opened by <your GitHub login>'s AI agent (<tool, model>), not by <your GitHub login> personally." Use your own login, not someone else's. -->
-
-## What and why
-
-<!-- What this changes, and why. Link the issue it fixes ("Fixes #123"). -->
-
-## Kind
-
-<!-- Tick one: it sets the pull request's label (CONTRIBUTING.md "Pull requests"). -->
-
-- [ ] parity: Horizon now does what vanilla 26.3 does
-- [ ] bug: a crash or a breakage
-- [ ] perf: faster, or less memory
-- [ ] feature: something new for players (listed under New in the release notes)
-- [ ] extra: Horizon-only, off by default
-- [ ] tooling: tools, CI, tests, harnesses
-- [ ] docs
-
-## Vanilla reference
-
-<!-- The vanilla classes and methods this follows (tools/rea_vanilla.py), and the harness that checks it.
-     "Horizon-only" for a feature vanilla doesn't have; "none" for tooling or docs. -->
-
-## Other projects' code
-
-<!-- "none", or for each project you read or copied from: its link at the commit, its license (only MIT,
-     BSD-2-Clause, BSD-3-Clause, Apache-2.0, ISC, zlib, 0BSD, MIT-0, Unlicense or CC0-1.0), and what you took.
-     CONTRIBUTING.md "Only original code". -->
-
-## Self-check
-
-<!-- Paste the block `python3 tools/pr_ready.py` prints (`--base upstream/main` from a fork). -->
-
-## Screenshots
-
-<!-- For anything players see: before and after. Delete this section otherwise. -->
-
-<!-- Please tick "Allow edits by maintainers": we push small fixups ourselves instead of a round trip.
-     See CONTRIBUTING.md. -->

.github/release-line.txt

@@ -1 +0,0 @@
-0.2

.github/trusted-reviewers.txt

@@ -1,16 +0,0 @@
-# Trusted reviewers: one list for three things (docs/release-flow.md "Trusted reviewers").
-# - `/nightly 2640 2642` picks the pull requests the Nightly holds (tools/ci/nightly_set.py);
-# - `/close`, `/reopen`, `/label`, `/unlabel` triage issues and pull requests (tools/ci/triage_command.py);
-# - `/unclaim @login` releases someone else's claim, and listed reviewers have no claim limit (tools/ci/claim_command.py).
-# One reviewer per line: `<numeric GitHub ID> <login>`, with who added it and when. The ID decides; the login is only
-# for people reading this file and for messages. A login is a name anyone can claim once its owner renames or deletes
-# the account; an ID is never reused. Get it with `gh api users/<login> --jq .id`, or run
-# `python3 tools/ci/resolve_reviewer_ids.py` to fill in the IDs and `--check` to catch renames.
-# A line in any other form (a bare login included) grants nothing. Ludovic is always allowed (OWNER_ID in
-# tools/ci/nightly_set.py) and isn't listed. Removing a line revokes that account at once. A line with only `paused`
-# stops all three for every reviewer (Ludovic's still work).
-54669067 kacpherek       # added by Ludovic, 2026-10-27
-87152661 rdbtCVS         # added by Ludovic, 2026-10-27
-84875247 Online5277      # added by Ludovic, 2026-10-27 (his top three by merged pull requests)
-86072227 levzzz5154      # added by Ludovic, 2026-10-28 (Horizon Team; author of horizon-mixins)
-87478350 Qwerner88880    # added by Ludovic, 2026-10-31 (Discord vladislav_hagen; native-mod hooks)

.github/workflows/cancel-on-close.yml

@@ -1,31 +0,0 @@
-name: cancel-on-close
-# A closed or merged pull request's queued and running checks free the runners at once.
-# pull_request_target so the token can cancel runs of pull requests from forks too;
-# it checks out nothing and runs no code from the pull request.
-on:
-  pull_request_target:
-    types: [closed]
-permissions:
-  actions: write
-jobs:
-  cancel:
-    # One of our small runners (horizon-light), out of GitHub's pool: no checkout, no code of the pull request
-    # (docs/ci-runners.md). SELF_HOSTED_CI=off: GitHub's runners.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
-    steps:
-      - name: Cancel the pull request's unfinished runs
-        env:
-          GH_TOKEN: ${{ github.token }}
-          REPO: ${{ github.repository }}
-          BRANCH: ${{ github.event.pull_request.head.ref }}
-          HEAD_REPO: ${{ github.event.pull_request.head.repo.full_name }}
-        run: |
-          # Every head the pull request had, not only its last: a run-parity label added on an older head left that
-          # run queued after the merge (#3104, 2026-10-29). Its branch in its own repository names its runs (another
-          # fork can have a branch of the same name).
-          for status in queued in_progress waiting pending requested; do
-            gh api -X GET "repos/$REPO/actions/runs" -f branch="$BRANCH" -f event=pull_request -f status="$status" \
-              -f per_page=100 --jq ".workflow_runs[] | select(.head_repository.full_name == \"$HEAD_REPO\") | .id"
-          done | sort -u | while read -r id; do
-            gh run cancel -R "$REPO" "$id" || true
-          done

.github/workflows/cargo-horizon-mod.yml

@@ -1,107 +0,0 @@
-name: cargo-horizon-mod
-# `cargo binstall --git https://github.com/horizon-rust/horizon cargo-horizon-mod` (#2120): binstall reads
-# [package.metadata.binstall] from crates/cargo-horizon-mod/Cargo.toml and downloads the archive this workflow
-# attaches to the tag `cargo-horizon-mod-v<version>`, whose version must be the manifest's. The targets come from
-# tools/horizon_mod_binstall.py, the same file the manifest's template is checked against, so a platform added there
-# is built here and one nobody publishes is caught before it ships. A pull request builds the archives and publishes
-# nothing.
-on:
-  push:
-    tags: ['cargo-horizon-mod-v*']
-  pull_request:
-    paths:
-      - 'crates/cargo-horizon-mod/**'
-      - 'tools/horizon_mod_binstall.py'
-      - '.github/workflows/cargo-horizon-mod.yml'
-permissions:
-  contents: read
-jobs:
-  plan:
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    outputs:
-      platforms: ${{ steps.platforms.outputs.platforms }}
-    steps:
-      - uses: actions/checkout@v7
-      - id: platforms
-        run: echo "platforms=$(python3 -c 'import json, tools.horizon_mod_binstall as m; print(json.dumps(m.PLATFORMS))')" >> "$GITHUB_OUTPUT"
-  build:
-    needs: plan
-    name: build ${{ matrix.target }}
-    strategy:
-      fail-fast: false
-      matrix:
-        include: ${{ fromJSON(needs.plan.outputs.platforms) }}
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 30
-    steps:
-      - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: ${{ matrix.target }}
-      - name: The aarch64 Linux linker
-        if: matrix.target == 'aarch64-unknown-linux-gnu'
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y gcc-aarch64-linux-gnu
-          echo "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc" >> "$GITHUB_ENV"
-      - name: Build
-        run: cargo build --release --locked -p cargo-horizon-mod --target ${{ matrix.target }}
-      - name: It starts
-        if: matrix.run
-        shell: bash
-        run: |
-          set -euo pipefail
-          binary="target/${{ matrix.target }}/release/cargo-horizon-mod"
-          [ -f "$binary.exe" ] && binary="$binary.exe"
-          out=$("$binary" 2>&1 || true)
-          case "$out" in
-            *"usage: cargo horizon-mod"*) ;;
-            *) echo "$out"; echo "::error::$binary does not start"; exit 1 ;;
-          esac
-      - name: Package
-        shell: bash
-        run: |
-          set -euo pipefail
-          binary="target/${{ matrix.target }}/release/cargo-horizon-mod"
-          [ -f "$binary.exe" ] && binary="$binary.exe"
-          mkdir -p dist
-          tar -czf "dist/$(basename "$binary" | sed 's/\.exe$//')-${{ matrix.target }}.tar.gz" -C "$(dirname "$binary")" "$(basename "$binary")"
-      - uses: actions/upload-artifact@v7
-        with:
-          name: cargo-horizon-mod-${{ matrix.target }}
-          path: dist/*.tar.gz
-          if-no-files-found: error
-          retention-days: 3
-  publish:
-    needs: build
-    if: startsWith(github.ref, 'refs/tags/')
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    permissions:
-      contents: write
-    steps:
-      - uses: actions/checkout@v7
-      - uses: actions/download-artifact@v8
-        with:
-          pattern: cargo-horizon-mod-*
-          path: dist
-          merge-multiple: true
-      - name: The tag and the manifest name the same release and archives
-        run: python3 tools/horizon_mod_binstall.py dist "$GITHUB_REF_NAME"
-      - name: Checksums
-        run: |
-          set -euo pipefail
-          cd dist
-          for file in *.tar.gz; do sha256sum "$file" | cut -d' ' -f1 > "$file.sha256"; done
-      - name: Publish
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          set -euo pipefail
-          notes="\`cargo binstall --git https://github.com/horizon-rust/horizon cargo-horizon-mod\`"
-          if gh release view "$GITHUB_REF_NAME" >/dev/null 2>&1; then
-            gh release upload "$GITHUB_REF_NAME" dist/* --clobber
-          else
-            gh release create "$GITHUB_REF_NAME" dist/* --latest=false --title "cargo-horizon-mod ${GITHUB_REF_NAME#cargo-horizon-mod-v}" --notes "$notes"
-          fi

.github/workflows/ci.yml

@@ -1,662 +0,0 @@
-name: checks
-# verify: every pull request and every push to main, on GitHub's runners (the repository is public). It is the
-# check main requires, so it never has a condition: a skipped job counts as passed, and every run of this workflow
-# must report a real verify (a pull request that changes no Rust finishes it in seconds instead).
-# parity: the vanilla harnesses a pull request's changes can affect, on the Mac mini's runner, which holds the
-# maintainer's own Minecraft files (Horizon never downloads the game); .github/workflows/parity.yml. Only for a pull
-# request that changes a harness, oracle, probe or the runner: the rest are checked on main by parity-main. A fork's pull
-# request runs it only when a maintainer adds the run-parity label (.github/workflows/run-parity.yml), so labels
-# never start this workflow. See docs/release-flow.md.
-on:
-  push:
-    branches: [main]
-  pull_request:
-    types: [opened, synchronize, reopened]
-  workflow_dispatch:
-permissions:
-  contents: read
-concurrency:
-  # A new push to a pull request replaces its running checks; main's runs all finish (releases follow them).
-  group: checks-${{ github.event.pull_request.number || github.sha }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
-env:
-  # Test runs never reach the telemetry server: no live-count ping, no uploads (docs/telemetry.md).
-  HORIZON_TELEMETRY_URL: "off"
-
-jobs:
-  # One job, not one per check: each job takes a runner from the organisation's shared pool, and with every pull request
-  # and every merge to main starting this workflow, three jobs a run left the pool's queue tens of minutes deep.
-  #
-  # Where (docs/ci-runners.md): our checks runners (label horizon-checks: the desktop's, an isolated user, so a fork's
-  # pull request runs there too) take the pull requests whose number ends in 0 or 1, about what their three runners
-  # can do; GitHub's runners take the others and main's pushes (which also save the Rust cache GitHub's pull request
-  # runs read), so both pools work at once. The repository variable SELF_HOSTED_CI moves them: `all` every job to
-  # ours, `light` (the desktop paused) or `off` every job to GitHub's. On ours the build folder persists
-  # (CARGO_TARGET_DIR, outside the checkout), so the apt packages, Python and the Rust cache steps are GitHub's only.
-  verify:
-    runs-on: >-
-      ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && (vars.SELF_HOSTED_CI == 'all' ||
-      github.event_name == 'pull_request' && (endsWith(format('{0}', github.event.pull_request.number), '0') ||
-      endsWith(format('{0}', github.event.pull_request.number), '1'))) &&
-      fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-      - uses: actions/setup-python@v7
-        if: runner.environment == 'github-hosted'
-        with:
-          python-version: '3.12'
-      - name: Does this pull request need Rust checks?
-        if: github.event_name == 'pull_request'
-        id: rust
-        env:
-          BASE_SHA: ${{ github.event.pull_request.base.sha }}
-          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
-        run: python3 tools/ci/rust_changes.py "$BASE_SHA" "$HEAD_SHA" >> "$GITHUB_OUTPUT"
-      # A pull request adds only its own commits to main, so it reads those; main's pushes read every ref's history.
-      - name: Keep game artifacts out of Git
-        env:
-          EVENT: ${{ github.event_name }}
-          BASE_SHA: ${{ github.event.pull_request.base.sha }}
-          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
-        run: |
-          python tools/check_public_tree.py
-          if [ "$EVENT" = pull_request ]; then
-            python tools/check_public_tree.py --range "$BASE_SHA..$HEAD_SHA"
-          else
-            python tools/check_public_tree.py --history
-          fi
-      # Our runners as GitHub's: some Python tests compile Rust with a bare `rustc` (GitHub's image has a default
-      # toolchain, our runners' own rustup homes may not), and the GPU tests find no adapter there, so they return
-      # early. Ours have Mesa's software Vulkan for parity; a backend Linux lacks keeps the tests from it, so a pull
-      # request's verify doesn't depend on which pool took it (#8627: a GPU test that flakes on lavapipe).
-      - name: Our runners as GitHub's (a default Rust toolchain, no GPU)
-        if: runner.environment != 'github-hosted'
-        run: |
-          rustup toolchain install stable --profile minimal --component rustfmt --component clippy
-          rustup default stable
-          echo "WGPU_BACKEND=dx12" >> "$GITHUB_ENV"
-      - name: Test offline research tooling
-        run: python -m unittest discover -s tests -v
-      - name: Install Rust toolchain and the ALSA and udev headers the client links against
-        if: steps.rust.outputs.required != 'false'
-        env:
-          HOSTED: ${{ runner.environment == 'github-hosted' }}
-        run: |
-          if [ "$HOSTED" = true ]; then
-            sudo apt-get update && sudo apt-get install -y --no-install-recommends libasound2-dev libudev-dev
-          fi
-          rustup toolchain install stable --profile minimal --component rustfmt --component clippy
-      # Dependencies and the workspace's own build, saved from main's runs (pull requests read main's cache).
-      - uses: Swatinem/rust-cache@v2
-        if: steps.rust.outputs.required != 'false' && runner.environment == 'github-hosted'
-        with:
-          shared-key: verify
-          save-if: ${{ github.ref == 'refs/heads/main' }}
-      - name: Check formatting and lint
-        if: steps.rust.outputs.required != 'false'
-        run: |
-          cargo +stable fmt --all -- --check
-          cargo +stable clippy --workspace --all-targets -- -D warnings
-          # The server build (released as horizon-engine): the game without sound or controllers.
-          cargo +stable clippy -p horizon-client --all-targets --no-default-features -- -D warnings
-      # Libraries, binaries and integration tests, then doc tests: not the ~275 examples, which clippy above already
-      # type-checks and the parity job builds and runs (they were most of this step's build and link time).
-      # cargo test, not nextest: nextest's process per test reloads each binary's shared tables for every test, and on
-      # these 4-core runners it was no faster (#4978).
-      - name: Test Rust core and voxel kernel correctness
-        if: steps.rust.outputs.required != 'false'
-        run: |
-          cargo +stable test --workspace --lib --bins --tests
-          # The full content-root tests (#[ignore]d: minutes each on a laptop). The same build as above; they need the
-          # prepared vanilla data, so without it they pass at once. Keep the target selection identical to avoid
-          # recompiling the workspace with a different dependency graph.
-          cargo +stable test --workspace --lib --bins --tests mod_content::tests:: -- --ignored
-          cargo +stable test --workspace --doc
-  # The launcher is its own workspace (launcher/Cargo.toml), so verify's cargo runs never build it. A pull request that
-  # changes it or a crate it builds is checked here, and so is every push to main: two pull requests can each pass
-  # alone and break it together (#2059 and the registry ratings did, 2026-10-26).
-  launcher:
-    runs-on: >-
-      ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && (vars.SELF_HOSTED_CI == 'all' ||
-      github.event_name == 'pull_request' && (endsWith(format('{0}', github.event.pull_request.number), '0') ||
-      endsWith(format('{0}', github.event.pull_request.number), '1'))) &&
-      fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-      - name: Does this pull request change the launcher or a crate it builds?
-        if: github.event_name == 'pull_request'
-        id: launcher
-        env:
-          BASE_SHA: ${{ github.event.pull_request.base.sha }}
-          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
-        run: python3 tools/ci/rust_changes.py --launcher "$BASE_SHA" "$HEAD_SHA" >> "$GITHUB_OUTPUT"
-      - name: Install Rust and the headers GPUI links against
-        if: steps.launcher.outputs.required != 'false'
-        env:
-          HOSTED: ${{ runner.environment == 'github-hosted' }}
-        run: |
-          if [ "$HOSTED" = true ]; then
-            sudo apt-get update && sudo apt-get install -y --no-install-recommends libxkbcommon-x11-dev libwayland-dev \
-              libx11-xcb-dev libfontconfig-dev libvulkan-dev libasound2-dev libudev-dev
-          fi
-          rustup toolchain install stable --profile minimal --component rustfmt --component clippy
-      - uses: Swatinem/rust-cache@v2
-        if: steps.launcher.outputs.required != 'false' && runner.environment == 'github-hosted'
-        with:
-          workspaces: launcher
-          shared-key: launcher
-          save-if: ${{ github.ref == 'refs/heads/main' }}
-      - name: Check the launcher's formatting, lint and tests
-        if: steps.launcher.outputs.required != 'false'
-        working-directory: launcher
-        run: |
-          cargo +stable fmt --check
-          cargo +stable clippy --all-targets --locked -- -D warnings
-          cargo +stable test --locked --lib --bins
-  # Compile and test Windows ARM64 on an actual ARM64 host, and inspect the resulting PE headers. By hand only
-  # (`gh workflow run checks --ref <branch>`): GitHub's runner queue is the bottleneck, and main's runs gate the
-  # releases (tools/release_train.py waits for them), so neither pull requests nor main's pushes start this
-  # 90-minute job. The Nightly and launcher releases build and check these binaries on every run.
-  windows-arm64:
-    name: Windows ARM64 game and launcher
-    if: github.event_name == 'workflow_dispatch'
-    runs-on: windows-11-vs2026-arm
-    timeout-minutes: 90
-    env:
-      RUSTFLAGS: -C target-feature=+crt-static
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-      - name: Use every runner core for Cargo
-        shell: pwsh
-        run: |
-          $cores = (Get-CimInstance Win32_Processor | Measure-Object -Property NumberOfLogicalProcessors -Sum).Sum
-          "CARGO_BUILD_JOBS=$cores" >> $env:GITHUB_ENV
-      - uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: aarch64-pc-windows-msvc
-      - uses: Swatinem/rust-cache@v2
-        with:
-          shared-key: windows-arm64-game
-      - uses: Swatinem/rust-cache@v2
-        with:
-          workspaces: launcher
-          shared-key: windows-arm64-launcher
-      - name: Check LLVM assembler used by ring
-        shell: pwsh
-        run: |
-          $llvmBin = Join-Path $env:ProgramFiles 'LLVM\bin'
-          if (-not (Get-Command clang -ErrorAction SilentlyContinue) -and (Test-Path (Join-Path $llvmBin 'clang.exe'))) {
-            $env:PATH = "$llvmBin;$env:PATH"
-            "PATH=$env:PATH" >> $env:GITHUB_ENV
-          }
-          $clang = Get-Command clang -ErrorAction Stop
-          Write-Output "Using $($clang.Source)"
-          & $clang.Source --version
-      - name: Build the game for native Windows ARM64
-        run: cargo build --release --locked --target aarch64-pc-windows-msvc -p horizon-client -p horizon-client-lib --bin horizon-client --bin horizon-ctl -p horizon-prepare --bin horizon-prepare -p horizon-server --bin horizon-server
-      - name: Check the game's PE machine
-        run: python tools/check_pe_arch.py arm64 target/aarch64-pc-windows-msvc/release/horizon-client.exe target/aarch64-pc-windows-msvc/release/horizon-ctl.exe target/aarch64-pc-windows-msvc/release/horizon-prepare.exe target/aarch64-pc-windows-msvc/release/horizon-server.exe
-      - name: Check game DLL imports
-        run: python tools/check_imports.py target/aarch64-pc-windows-msvc/release/horizon-client.exe target/aarch64-pc-windows-msvc/release/horizon-ctl.exe target/aarch64-pc-windows-msvc/release/horizon-prepare.exe target/aarch64-pc-windows-msvc/release/horizon-server.exe
-      - name: Start every game executable
-        shell: pwsh
-        run: |
-          $ErrorActionPreference = 'Stop'
-          $client = 'target/aarch64-pc-windows-msvc/release/horizon-client.exe'
-          $output = & $client --help 2>&1
-          if ($LASTEXITCODE -ne 0 -or ($output -join "`n") -notmatch '--resources') { throw 'horizon-client --help failed' }
-          foreach ($binary in @('horizon-ctl.exe', 'horizon-prepare.exe', 'horizon-server.exe')) {
-            $path = "target/aarch64-pc-windows-msvc/release/$binary"
-            $output = & $path --help 2>&1
-            if ($LASTEXITCODE -ne 0 -or -not $output) { throw "$binary --help failed" }
-          }
-          foreach ($binary in @('horizon-prepare.exe', 'horizon-server.exe')) {
-            $path = "target/aarch64-pc-windows-msvc/release/$binary"
-            $output = & $path --version 2>&1
-            if ($LASTEXITCODE -ne 0 -or -not $output) { throw "$binary --version failed" }
-            Write-Output ($output -join "`n")
-          }
-      - name: Test and build the native Windows ARM64 launcher
-        working-directory: launcher
-        run: |
-          cargo test --release --locked --target aarch64-pc-windows-msvc --lib
-          cargo build --release --locked --target aarch64-pc-windows-msvc
-      - name: Check the launcher's PE machine
-        working-directory: launcher
-        run: python ../tools/check_pe_arch.py arm64 target/aarch64-pc-windows-msvc/release/horizon-launcher.exe
-      - name: Check launcher DLL imports and command-line startup
-        working-directory: launcher
-        shell: pwsh
-        run: |
-          $ErrorActionPreference = 'Stop'
-          $launcher = 'target/aarch64-pc-windows-msvc/release/horizon-launcher.exe'
-          python ../tools/check_imports.py $launcher
-          $output = & $launcher --version 2>&1
-          if ($LASTEXITCODE -ne 0 -or -not $output) { throw 'horizon-launcher --version failed' }
-          Write-Output ($output -join "`n")
-      - name: Build a native-mod game with the launcher's managed toolchain
-        working-directory: launcher
-        shell: pwsh
-        env:
-          HORIZON_LAUNCHER_HOME: ${{ runner.temp }}\horizon-native-arm64-toolchain
-          HORIZON_NATIVE_TARGET_DIR: ${{ runner.temp }}\horizon-native-arm64-toolchain\target
-        run: |
-          $ErrorActionPreference = 'Stop'
-          cargo test --release --locked --target aarch64-pc-windows-msvc --lib rust_toolchain::tests::managed_arm64_toolchain_builds_the_game -- --ignored --exact --nocapture
-          $client = Join-Path $env:HORIZON_NATIVE_TARGET_DIR 'fast/horizon-client.exe'
-          python ../tools/check_pe_arch.py arm64 $client
-          python ../tools/check_imports.py $client
-  # Most pull requests leave the harnesses to parity-main, which runs them on main a batch of merges at a time
-  # (.github/workflows/parity-main.yml; releases wait for it). A pull request still runs them itself when it changes
-  # a harness, an oracle, a probe or the runner, or carries the run-parity label (run-parity.yml, when it is added).
-  parity-scope:
-    if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
-    # A git diff of this repository's own branch: one of our small runners (horizon-light, docs/ci-runners.md).
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
-    outputs:
-      run: ${{ steps.scope.outputs.run }}
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-          persist-credentials: false
-      - id: scope
-        env:
-          BASE_SHA: ${{ github.event.pull_request.base.sha }}
-          LABELS: ${{ join(github.event.pull_request.labels.*.name, ' ') }}
-        run: |
-          changed=$(git diff --name-only "$(git merge-base "$BASE_SHA" HEAD)" HEAD)
-          harness=$(grep -E '^(tools/test_[a-z0-9_]+_parity\.py|tools/(parity[a-z_]*|lab)\.py|tools/parity_hosts\.json|mods/horizon/src/test/|crates/[^/]+/examples/|crates/horizon-client/src/game/[a-z_]*(fixture|harness)\.rs|\.github/workflows/parity[a-z-]*\.yml)' <<< "$changed" || true)
-          if [ -n "$harness" ] || [[ " $LABELS " == *" run-parity "* ]] || [[ " $LABELS " == *" frame-identity "* ]]; then
-            echo "run=true" >> "$GITHUB_OUTPUT"
-            echo "The pull request runs its harnesses: ${harness:-label run-parity}"
-          else
-            echo "run=false" >> "$GITHUB_OUTPUT"
-            echo "No harness, oracle, probe or runner change: parity-main checks this on main"
-          fi
-  parity:
-    needs: parity-scope
-    if: needs.parity-scope.outputs.run == 'true'
-    uses: ./.github/workflows/parity.yml
-    with:
-      base: ${{ github.event.pull_request.base.sha }}
-      head: ${{ github.event.pull_request.head.sha }}
-      full: ${{ contains(github.event.pull_request.labels.*.name, 'full-parity') }}
-      frame_identity: ${{ contains(github.event.pull_request.labels.*.name, 'frame-identity') }}
-  # Horizon never downloads the game. These jobs need a self-hosted Linux runner
-  # (label horizon-game) holding the maintainer's own copy: the official launcher's
-  # game directory in HORIZON_MINECRAFT_DIR and the pinned server jar in
-  # HORIZON_SERVER_JAR. Start them by hand: gh workflow run checks --ref <branch>.
-  vanilla-parity:
-    if: github.event_name == 'workflow_dispatch'
-    runs-on: [self-hosted, linux, horizon-game]
-    steps:
-      - uses: actions/checkout@v7
-      - uses: actions/setup-python@v7
-        with:
-          python-version: '3.12'
-      - name: Install Rust toolchain
-        run: rustup toolchain install stable --profile minimal
-      - uses: actions/setup-java@v6
-        with:
-          distribution: temurin
-          java-version: '25'
-      - name: Compare Rust foundations with pinned vanilla client and server bytecode
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_rust_parity.py --prepare
-      - name: Check Rust world-data interoperability with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_world_parity.py
-      - name: Compare scheduled ticks and saved tick data with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_tick_parity.py
-      - name: Compare simulation geometry and cached block collision shapes
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: |
-          python tools/test_geometry_parity.py
-          python tools/test_collision_parity.py
-      - name: Compare noise samplers and density kernels with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_noise_parity.py
-      - name: Compare compiled density samplers with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_density_parity.py
-      - name: Compare world-generation JSON codecs with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_worldgen_parity.py
-      - name: Compare heightmap predicates and chunk mutations with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_heightmap_parity.py
-      - name: Compare pre-light chunk status transitions and block writes
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_chunk_stage_parity.py
-      - name: Compare feature placement into resident neighboring chunks
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_feature_region_parity.py
-      - name: Compare nested feature selectors and sequences
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_feature_graph_parity.py
-      - name: Compare named feature holders and placed-feature tags
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_feature_catalog_parity.py
-      - name: Compare configured fill-layer block placement
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_fill_layer_parity.py
-      - name: Compare replacement-rule codecs and evaluation
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_rule_test_parity.py
-      - name: Compare simple-block placement and feature composition
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_simple_block_parity.py
-      - name: Compare block-column sampling and obstruction
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_block_column_parity.py
-      - name: Compare vertical pillars and cap feature placement
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_pillar_parity.py
-      - name: Compare exactly-one-neighbor feature spreading
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_neighbor_spread_parity.py
-      - name: Compare block-pile support and placement
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_block_pile_parity.py
-      - name: Compare disk replacement and postprocessing
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_disk_parity.py
-      - name: Compare block-blob support search and geometry
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_block_blob_parity.py
-      - name: Compare spring placement and fluid tick scheduling
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_spring_parity.py
-      - name: Compare vine attachment priority and placement
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_vines_parity.py
-      - name: Compare underwater magma floor scans and occlusion
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_underwater_magma_parity.py
-      - name: Compare blue-ice seeding and growth attempts
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_blue_ice_parity.py
-      - name: Compare spike geometry and discontinuous roots
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_spike_parity.py
-      - name: Compare End podium construction and destruction requests
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_end_podium_parity.py
-      - name: Rust End gateway parity
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_end_gateway_parity.py
-      - name: Compare bonus chest placement and conditional loot seeding
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_bonus_chest_parity.py
-      - name: Compare recursive chorus generation and connection refreshes
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_chorus_plant_parity.py
-      - name: Compare small speleothem patches and waterlogged points
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_speleothem_parity.py
-      - name: Compare replacement blob search and Manhattan shells
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_replace_blobs_parity.py
-      - name: Compare bamboo stalks, podzol patches and leafy caps
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_bamboo_parity.py
-      - name: Compare Nether delta rims and shifted contents
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_delta_parity.py
-      - name: Compare biome freezing and snow eligibility
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_biome_weather_parity.py
-      - name: Compare frozen top layers and snowy ground updates
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_snow_freeze_parity.py
-      - name: Compare generation-stage tick storage and routing
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_generation_tick_parity.py
-      - name: Compare below-zero upgrade metadata codecs
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_retrogen_data_parity.py
-      - name: Compare below-zero upgrade lifecycle and block transformations
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_retrogen_chunk_parity.py
-      - name: Compare chunk-status metadata, ordering and codecs
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_chunk_status_parity.py
-      - name: Compare proto-chunk block-entity storage and coordinates
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_block_entity_storage_parity.py
-      - name: Compare ordered single-block replacement features
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_replace_block_parity.py
-      - name: Compare scattered ore placement and air-exposure checks
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_scattered_ore_parity.py
-      - name: Compare resident bulk-section access and raw writes
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_bulk_section_parity.py
-      - name: Compare biome feature ordering and cycle detection
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_feature_sort_parity.py
-      - name: Compare world-generation random wrappers and seeding
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_worldgen_random_parity.py
-      - name: Compare biome filtering and top-level feature context
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_biome_placement_parity.py
-      - name: Compare biome decoration feature scheduling and seeding
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_decoration_parity.py
-      - name: Compare decoration against resident biome and terrain sections
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_decoration_region_parity.py
-      - name: Compare block-state provider choices and rotation
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_state_provider_parity.py
-      - name: Compare contained fluids and height queries with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_fluid_parity.py
-      - name: Compare entity obstruction with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_entity_obstruction_parity.py
-      - name: Compare block solidity and replaceability with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_block_properties_parity.py
-      - name: Compare face slicing and block support with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_face_support_parity.py
-      - name: Compare cached block support with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_block_support_parity.py
-      - name: Compare dynamic block support with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_dynamic_support_parity.py
-      - name: Compare moving-piston collision and interpolation with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_piston_shape_parity.py
-      - name: Compare supported block survival rules with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_block_survival_parity.py
-      - name: Compare noise-stage chunk filling with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_terrain_parity.py
-      - name: Compare structure terrain-adaptation density with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_structure_density_parity.py
-      - name: Compare seeded material bands and surface queries with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_material_surface_parity.py
-      - name: Compare material condition codecs and rule evaluation with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_material_condition_parity.py
-      - name: Compare biome temperatures and cache behavior with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_biome_temperature_parity.py
-      - name: Compare badlands and frozen-ocean extensions with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_material_extension_parity.py
-      - name: Compare bundled material-rule libraries with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_material_rule_library_parity.py
-      - name: Compare fixed, checkerboard and End biome sources with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_biome_source_parity.py
-      - name: Compare seeded cave paths and failure state with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_cave_carver_parity.py
-      - name: Compare seeded canyon paths and width factors with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_canyon_carver_parity.py
-      - name: Compare initial block-writing feature algorithms with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_basic_feature_parity.py
-      - name: Compare feature placement chains with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_feature_placement_parity.py
-      - name: Compare feature placement primitives with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_placement_parity.py
-      - name: Compare anchored height providers with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_height_provider_parity.py
-      - name: Compare scalar value providers with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_value_provider_parity.py
-      - name: Compare cave and canyon geometric primitives with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_carving_geometry_parity.py
-      - name: Compare carving-mask traversal and callback mutations with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_carving_mask_parity.py
-      - name: Compare registry-bound biome-source codecs with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_biome_source_codec_parity.py
-      - name: Compare all four biome-source kinds in chunk generation with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_biome_generation_parity.py
-      - name: Compare chunk biome filling and failure state with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_biome_chunk_parity.py
-      - name: Compare biome zoom and seed obfuscation with pinned vanilla
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_biome_zoom_parity.py
-      - name: Compare surface-stage chunks with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_material_stage_parity.py
-      - name: Compare block-state JSON codecs with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_block_state_codec_parity.py
-      - name: Compare vertical anchors with pinned vanilla client and server
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_anchor_parity.py
-      - name: Compare float logarithms at domain and rounding boundaries
-        env:
-          RUSTUP_TOOLCHAIN: stable
-        run: python tools/test_float_log_parity.py
-  jfr-analysis:
-    if: github.event_name == 'workflow_dispatch'
-    runs-on: [self-hosted, linux, horizon-game]
-    steps:
-      - uses: actions/checkout@v7
-      - uses: actions/setup-python@v7
-        with:
-          python-version: '3.12'
-      - uses: actions/setup-java@v6
-        with:
-          distribution: temurin
-          java-version: '25'
-      - name: Verify streaming JFR analysis against the JDK exporter
-        run: python tools/test_jfr.py
-      - name: Verify ZGC pause and allocation event interpretation
-        run: python tools/test_jfr.py --gc zgc

.github/workflows/claim-command.yml

@@ -1,80 +0,0 @@
-name: claim command
-# `/claim` and `/unclaim` comments: anyone takes an issue before working on it, and a daily run releases the claims
-# older than 5 days that no open pull request links (CONTRIBUTING.md "Claim before you start",
-# tools/ci/claim_command.py).
-#
-# Why no pull request's code runs here, though the token can write:
-# - `issue_comment` and `schedule` always run this file from main, whoever comments and wherever.
-# - It checks out main's script and list only, never a pull request; it reads threads through the API.
-# - The comment's text and author reach the script as env vars, never in a shell line. The token stays in the step
-#   and can only write issues (assignees, comments, reactions).
-on:
-  issue_comment:
-    types: [created]
-  schedule:
-    - cron: "23 5 * * *"
-  workflow_dispatch:
-permissions:
-  contents: read
-jobs:
-  command:
-    # Every other comment skips here, before a runner starts. Pull requests are answered by the script.
-    if: >-
-      github.event_name == 'issue_comment' && github.event.comment.user.type != 'Bot' && (
-      startsWith(github.event.comment.body, '/claim') ||
-      startsWith(github.event.comment.body, '/unclaim') ||
-      startsWith(github.event.comment.body, '🤖 Agent: /claim') ||
-      startsWith(github.event.comment.body, '🤖 Agent: /unclaim'))
-    # One command per issue at a time, so two `/claim`s can't both find it free. On the job, not the workflow:
-    # the skipped runs of ordinary comments must not cancel a waiting one.
-    concurrency:
-      group: claim-${{ github.event.issue.number }}
-    # One of our small runners (horizon-light), out of GitHub's pool: main's script only (docs/ci-runners.md).
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
-    timeout-minutes: 5
-    permissions:
-      contents: read
-      issues: write
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: main
-          persist-credentials: false
-          sparse-checkout: |
-            .github/trusted-reviewers.txt
-            tools/ci/nightly_set.py
-            tools/ci/claim_command.py
-          sparse-checkout-cone-mode: false
-      - name: Run the command
-        env:
-          GH_TOKEN: ${{ github.token }}
-          BODY: ${{ github.event.comment.body }}
-          AUTHOR: ${{ github.event.comment.user.login }}
-          # Who may act is decided by this numeric ID: a login can be claimed by someone else after a rename.
-          AUTHOR_ID: ${{ github.event.comment.user.id }}
-          ISSUE: ${{ github.event.issue.number }}
-          COMMENT_ID: ${{ github.event.comment.id }}
-          REPO: ${{ github.repository }}
-        run: python3 tools/ci/claim_command.py command
-  release:
-    if: github.event_name != 'issue_comment' && github.repository == 'horizon-rust/horizon'
-    # One of our small runners (horizon-light), out of GitHub's pool: main's script only (docs/ci-runners.md).
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
-    timeout-minutes: 10
-    permissions:
-      contents: read
-      issues: write
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: main
-          persist-credentials: false
-          sparse-checkout: |
-            tools/ci/nightly_set.py
-            tools/ci/claim_command.py
-          sparse-checkout-cone-mode: false
-      - name: Release stale claims
-        env:
-          GH_TOKEN: ${{ github.token }}
-          REPO: ${{ github.repository }}
-        run: python3 tools/ci/claim_command.py release

.github/workflows/game-build.yml

@@ -1,349 +0,0 @@
-name: game build
-# Builds the game for every platform from `ref`: the Java exporters, then Linux and the Linux server, Windows x64
-# and ARM64 on GitHub, and macOS on the Mac mini's runner with a 1500-frame offscreen run of a new world (smoke-test.json): Apple
-# Silicon, and Intel cross-built there for x86_64-apple-darwin and checked under Rosetta 2 (#1161). Called by
-# release.yml (the releases) and nightly-build.yml (the opt-in Nightly), always from main's copy of this file: the
-# caller's commit, never the one being built. It holds no secrets: signing the checksums is the callers' own job,
-# which never runs what this one built. See docs/release-flow.md.
-on:
-  workflow_call:
-    inputs:
-      ref:
-        description: The commit to build
-        type: string
-        required: true
-      version:
-        description: The version built in (HORIZON_VERSION), e.g. 0.2.81 or nightly-2026-10-28
-        type: string
-        required: true
-      nightly:
-        description: A nightly's "<date> <short sha>" (HORIZON_NIGHTLY), shown by the game; empty for a release
-        type: string
-        default: ''
-      trusted:
-        # Only release.yml says true: it builds main. A nightly can hold pull requests nobody reviewed yet, whose
-        # build scripts and tests run here and could rewrite target/, the cargo home or a compiler cache. So an
-        # untrusted build never runs on the release runner, never saves the Rust cache (its key is its own anyway),
-        # and a trusted one never reads the machine's shared sccache, which pull requests' jobs write
-        # (tests/test_nightly.py pins all of it).
-        description: The source is main (a release); false for anything else (a nightly)
-        type: boolean
-        default: false
-      developer_id:
-        description: Sign the macOS programs with Developer ID and notarize the zip (the runner's keychain)
-        type: boolean
-        default: true
-permissions:
-  contents: read
-jobs:
-  exporters:
-    # This runner holds the maintainer's own pinned Minecraft jars. Only our classes leave it. An untrusted build
-    # goes to the Mac mini's nightly runner (macOS + horizon-nightly: ludovics-mac-mini-nightly, beside the one that
-    # runs pull requests' parity jobs, so a nightly never waits behind their queue), never the release runner
-    # (MAC_RUNNER: ludovics-mac-mini-release) nor parity-main's.
-    runs-on: ${{ inputs.trusted && vars.MAC_RUNNER || fromJSON('["self-hosted", "macOS", "horizon-nightly"]') }}
-    # Three full preparations (two isolated, one batched) besides the compile.
-    timeout-minutes: 60
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: ${{ inputs.ref }}
-          persist-credentials: false
-          clean: true
-      - uses: dtolnay/rust-toolchain@stable
-      - run: bash tools/ci/runner-env.sh
-        env:
-          HORIZON_NO_SCCACHE: ${{ inputs.trusted && '1' || '' }}
-      - run: bash tools/ci/vanilla-data.sh
-      - name: Compile and validate original exporters against the pinned jars
-        shell: bash
-        run: |
-          set -euo pipefail
-          # target/ is gone after the clean checkout, and vanilla-data.sh builds the preparer only when it
-          # prepares afresh.
-          cargo build --release --locked -p horizon-prepare
-          # Compiled here, never taken from the runner's shared preparations: pull requests' parity jobs
-          # write those (vanilla-data.sh links .local/exporters to them).
-          rm -rf .local/exporters
-          bundle=$(target/release/horizon-prepare compile-exporters --root "$PWD" | tail -1)
-          mkdir -p exporters
-          cp -R "$bundle/server" "$bundle/client" "$bundle/manifest.json" exporters/
-          # Only our classes and their manifest leave this runner.
-          stray=$(find exporters -type f ! -path exporters/manifest.json \
-            ! \( -name '*.class' \( -path 'exporters/server/dev/horizonlab/parity/*' -o -path 'exporters/client/dev/horizonlab/parity/*' \) \))
-          [ -z "$stray" ] || { echo "::error::not one of our classes: $stray"; exit 1; }
-          python3 tools/check_prepare_exporters.py --binary target/release/horizon-prepare
-      - uses: actions/upload-artifact@v7
-        with:
-          name: original-exporters
-          path: exporters/
-          if-no-files-found: error
-          retention-days: 3
-
-  build:
-    needs: exporters
-    name: build ${{ matrix.name }}
-    # Windows ARM64 and musl are new: a failure never holds the other platforms' release (the signing job
-    # needs this job, and a failed entry of it would fail it). The release steps leave the missing
-    # optional archives out with a warning.
-    continue-on-error: ${{ matrix.name == 'windows-arm64' || matrix.name == 'linux-musl' }}
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - name: linux
-            os: ubuntu-22.04
-            dir: horizon-linux-x86_64
-            asset: horizon-linux-x86_64.tar.gz
-            # The server build too: packaging/server/install.sh installs it on Linux.
-            server_dir: horizon-server-linux-x86_64
-            server_asset: horizon-server-linux-x86_64.tar.gz
-          - name: linux-musl
-            os: ubuntu-22.04
-            musl: true
-            dir: horizon-linux-musl-x86_64
-            asset: horizon-linux-musl-x86_64.tar.gz
-          - name: windows
-            os: windows-latest
-            dir: horizon-windows-x64
-            asset: horizon-windows-x64.zip
-            exe: .exe
-            pe_arch: x64
-            # The C runtime linked in, so the game runs without the Visual C++ redistributable.
-            rustflags: -C target-feature=+crt-static
-          - name: windows-arm64
-            os: windows-11-vs2026-arm
-            target: aarch64-pc-windows-msvc
-            dir: horizon-windows-arm64
-            asset: horizon-windows-arm64.zip
-            exe: .exe
-            pe_arch: arm64
-            # The ARM64 runner builds and runs native ARM64 executables; keep the C runtime in the archive.
-            rustflags: -C target-feature=+crt-static
-          - name: macos
-            mac: true
-            dir: horizon-macos-arm64
-            asset: horizon-macos-arm64.zip
-          # Intel Macs: built on the same runner for another target; its checks and smoke test run the x86_64
-          # programs under Rosetta 2.
-          - name: macos-x64
-            mac: true
-            target: x86_64-apple-darwin
-            dir: horizon-macos-x64
-            asset: horizon-macos-x64.zip
-    runs-on: ${{ matrix.mac && (inputs.trusted && vars.MAC_RUNNER || fromJSON('["self-hosted", "macOS", "horizon-nightly"]')) || matrix.os }}
-    # Notarizing the zip can take a few minutes.
-    timeout-minutes: ${{ matrix.mac && 60 || 40 }}
-    env:
-      RUSTFLAGS: ${{ matrix.rustflags }}
-      # The release's version, built in (horizon_core::release): --version, user agents, crash reports and
-      # telemetry say it. No version-bump commits.
-      HORIZON_VERSION: ${{ inputs.version }}
-      # A nightly's date and commit ("2026-10-28 0c02067"), which the game shows; empty for a release.
-      HORIZON_NIGHTLY: ${{ inputs.nightly }}
-      # Where cargo puts the programs: target/release, or target/<target>/release for another target.
-      BIN: ${{ matrix.target && format('target/{0}/release', matrix.target) || 'target/release' }}
-    defaults:
-      run:
-        shell: bash
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: ${{ inputs.ref }}
-          persist-credentials: false
-          # Always from a clean checkout, the Mac mini's runner too: its work folder is shared with pull requests'
-          # parity jobs, and nothing they leave (target/, an untracked .cargo/config.toml, a build script's output)
-          # may end up in a release. target/ is rebuilt from scratch; .local/ is relinked by vanilla-data.sh, which
-          # keeps its preparations outside the checkout.
-          clean: true
-      - uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: ${{ matrix.target }}
-      - uses: Swatinem/rust-cache@v2
-        if: runner.environment == 'github-hosted' && !matrix.musl
-        with:
-          # A release restores only what a release saved: an untrusted build has its own key and saves nothing.
-          shared-key: ${{ inputs.trusted && 'release' || 'nightly' }}-${{ matrix.name }}
-          save-if: ${{ inputs.trusted }}
-      - name: ALSA and udev headers
-        if: runner.os == 'Linux' && !matrix.musl
-        run: sudo apt-get update && sudo apt-get install -y --no-install-recommends libasound2-dev libudev-dev
-      - name: Build the client, horizon-ctl, horizon-prepare and horizon-server
-        if: ${{ !matrix.musl }}
-        run: cargo build --release --locked ${{ matrix.target && format('--target {0}', matrix.target) || '' }} -p horizon-client -p horizon-client-lib --bin horizon-client --bin horizon-ctl -p horizon-prepare --bin horizon-prepare -p horizon-server --bin horizon-server
-      - name: Every program the release folder takes was built
-        if: ${{ !matrix.musl }}
-        run: |
-          for binary in horizon-client horizon-ctl horizon-prepare horizon-server; do
-            test -f "$BIN/$binary${{ matrix.exe }}" || { echo "::error::$BIN/$binary${{ matrix.exe }} is missing"; exit 1; }
-          done
-      - name: Verify Windows executable architecture
-        if: runner.os == 'Windows'
-        run: |
-          python tools/check_pe_arch.py "${{ matrix.pe_arch }}" \
-            "$BIN/horizon-client${{ matrix.exe }}" "$BIN/horizon-ctl${{ matrix.exe }}" \
-            "$BIN/horizon-prepare${{ matrix.exe }}" "$BIN/horizon-server${{ matrix.exe }}"
-      - name: The signing keychain, unlocked
-        if: runner.os == 'macOS' && vars.MACOS_SIGN_IDENTITY != '' && inputs.developer_id
-        env:
-          MACOS_SIGN_IDENTITY: ${{ vars.MACOS_SIGN_IDENTITY }}
-        run: packaging/macos/keychain.sh unlock
-      - name: Signed with Developer ID and the hardened runtime
-        # Before the checks below, so they run the programs as players will.
-        if: runner.os == 'macOS' && vars.MACOS_SIGN_IDENTITY != '' && inputs.developer_id
-        env:
-          MACOS_SIGN_IDENTITY: ${{ vars.MACOS_SIGN_IDENTITY }}
-        run: |
-          for binary in horizon-client horizon-ctl horizon-prepare horizon-server; do
-            codesign --force --options runtime --timestamp --keychain "$MACOS_SIGN_KEYCHAIN" \
-              --identifier "dev.horizon.${binary#horizon-}" --sign "$MACOS_SIGN_IDENTITY" "$BIN/$binary"
-            codesign --verify --strict --verbose=2 "$BIN/$binary"
-          done
-      - name: Only system libraries
-        if: ${{ !matrix.musl }}
-        # Windows: no non-system DLL (a "DLL not found" dialog on some players' machines). Linux: the standard
-        # loader and libraries every desktop distribution has. macOS: only the system's own libraries.
-        run: |
-          for binary in horizon-client horizon-ctl horizon-prepare horizon-server; do
-            file="$BIN/$binary${{ matrix.exe }}"
-            if [[ "$RUNNER_OS" == macOS ]]; then
-              others=$(otool -L "$file" | tail -n +2 | awk '{print $1}' | grep -v -E '^(/usr/lib/|/System/Library/)' || true)
-              [[ -z "$others" ]] || { echo "::error::$binary links $others"; exit 1; }
-            else
-              ${{ runner.os == 'Windows' && 'python' || 'python3' }} tools/check_imports.py "$file"
-            fi
-          done
-      - name: Baseline x86-64 CPUs only
-        # No POPCNT or LZCNT at all (the script says why only those): a C library's count intrinsic killed the
-        # game before main on a Core 2 (#7264). Not the Mac builds: every Intel Mac that runs macOS 11 has both.
-        if: runner.os != 'macOS' && matrix.pe_arch != 'arm64' && !matrix.musl
-        run: |
-          set -euo pipefail
-          rustup component add llvm-tools
-          ${{ runner.os == 'Windows' && 'python' || 'python3' }} tools/check_cpu_baseline.py \
-            $(for binary in horizon-client horizon-ctl horizon-prepare horizon-server; do echo "$BIN/$binary${{ matrix.exe }}"; done)
-      - name: Every program starts
-        if: ${{ !matrix.musl }}
-        run: |
-          set -euo pipefail
-          bin=$BIN
-          "$bin/horizon-client${{ matrix.exe }}" --help | grep -q -- '--resources'
-          "$bin/horizon-ctl${{ matrix.exe }}" --help > /dev/null
-          "$bin/horizon-prepare${{ matrix.exe }}" --help | grep -q -- '--minecraft-dir'
-          # The version is the release's.
-          for binary in horizon-prepare horizon-server; do
-            out=$("$bin/$binary${{ matrix.exe }}" --version | tr -d '\r')
-            echo "$out"
-            [[ "$out" == "$binary $HORIZON_VERSION" ]] || { echo "::error::expected $binary $HORIZON_VERSION"; exit 1; }
-          done
-      - name: Tools from the runner
-        if: runner.environment == 'self-hosted'
-        env:
-          HORIZON_NO_SCCACHE: ${{ inputs.trusted && '1' || '' }}
-        run: bash tools/ci/runner-env.sh
-      - name: Resources prepared from the runner's own Minecraft
-        if: runner.environment == 'self-hosted'
-        run: bash tools/ci/vanilla-data.sh
-      - name: The game runs (offscreen, a new world, 1500 frames)
-        if: runner.environment == 'self-hosted'
-        run: |
-          set -euo pipefail
-          # From a scratch folder: the game keeps its saves and options in the folder it starts in.
-          home="$RUNNER_TEMP/horizon-smoke"
-          rm -rf "$home" && mkdir -p "$home"
-          version=$(sed -n 's/.*"version": *"\([^"]*\)".*/\1/p' research-lock.json | head -1)
-          client="$PWD/$BIN/horizon-client"
-          resources="$PWD/.local/horizon-client/$version"
-          (cd "$home" && HORIZON_HOME="$home" HORIZON_NO_AUDIO=1 "$client" --resources "$resources" --offscreen \
-            --world smoke --seed 1 --render-distance 4 --world-frames 1500 --timeout-seconds 180 \
-            --smoke-report "$home/smoke.json" > "$home/client.log" 2>&1) || { tail -40 "$home/client.log"; exit 1; }
-          python3 - "$home/smoke.json" <<'EOF'
-          import json, sys
-          report = json.load(open(sys.argv[1]))
-          print(json.dumps(report))
-          if report.get("error") is not None or report.get("frames", 0) < 1500 or not report.get("chunks") \
-                  or not report.get("meshed_sections") or not report.get("player"):
-              sys.exit("the smoke run did not draw a world")
-          EOF
-          # Published with the release; the publish job checks it again before it publishes anything.
-          cp "$home/smoke.json" "$RUNNER_TEMP/smoke-test.json"
-      # One smoke-test.json per build, the Apple Silicon one's; the Intel build must pass its own run too.
-      - uses: actions/upload-artifact@v7
-        if: runner.environment == 'self-hosted' && !matrix.target
-        with:
-          name: smoke-test.json
-          path: ${{ runner.temp }}/smoke-test.json
-          if-no-files-found: error
-          retention-days: 3
-      - uses: actions/download-artifact@v8
-        with:
-          name: original-exporters
-          path: exporters
-      - name: Build, check and package for musl in Alpine
-        if: matrix.musl
-        # Run Docker on the Ubuntu host: JavaScript actions themselves require glibc.
-        run: |
-          docker run --rm -v "$PWD:/work" -w /work \
-            -e HORIZON_VERSION -e HORIZON_NIGHTLY \
-            rust:alpine3.22 sh tools/ci/build-musl.sh
-      - name: Package
-        if: ${{ !matrix.musl }}
-        run: |
-          set -euo pipefail
-          cargo run --locked -p xtask -- package "$BIN/horizon-client${{ matrix.exe }}" "dist/${{ matrix.dir }}"
-          cd dist
-          rm -f "${{ matrix.asset }}"
-          case "${{ matrix.asset }}" in
-            *.tar.gz) tar czf "${{ matrix.asset }}" "${{ matrix.dir }}" ;;
-            *) if [[ "$RUNNER_OS" == Windows ]]; then 7z a -tzip "${{ matrix.asset }}" "${{ matrix.dir }}" > /dev/null
-               else
-                 # Without resource forks and extended attributes: plain ditto adds an
-                 # AppleDouble `._` file beside every file that has any.
-                 ditto -c -k --norsrc --noextattr --noqtn --keepParent "${{ matrix.dir }}" "${{ matrix.asset }}"
-                 if unzip -Z1 "${{ matrix.asset }}" | grep -E '(^|/)(\._|__MACOSX/)'; then
-                   echo "::error::macOS metadata files in ${{ matrix.asset }}"; exit 1
-                 fi
-               fi ;;
-          esac
-          ls -l "${{ matrix.asset }}"
-      - name: Notarized
-        # A zip of programs can't be stapled: Gatekeeper asks Apple the first time each one runs.
-        if: runner.os == 'macOS' && vars.MACOS_SIGN_IDENTITY != '' && inputs.developer_id
-        run: |
-          for binary in horizon-client horizon-ctl horizon-prepare horizon-server; do
-            codesign --verify --strict "dist/${{ matrix.dir }}/$binary"
-          done
-          packaging/macos/notarize.sh "dist/${{ matrix.asset }}"
-      - uses: actions/upload-artifact@v7
-        with:
-          name: ${{ matrix.asset }}
-          path: dist/${{ matrix.asset }}
-          if-no-files-found: error
-          retention-days: 3
-      - name: The server build (the game without sound or controllers, as horizon-engine)
-        if: matrix.server_asset
-        run: |
-          set -euo pipefail
-          # After the client is packaged: target/release/horizon-client is rebuilt without the audio and
-          # controllers features, so it needs neither libasound nor libudev (minimal server images lack them).
-          cargo build --release --locked -p horizon-client --no-default-features --bin horizon-client
-          cargo run --locked -p xtask -- package-server target/release/horizon-client "dist/${{ matrix.server_dir }}"
-          folder="dist/${{ matrix.server_dir }}"
-          python3 tools/check_imports.py --server "$folder/horizon-engine" "$folder/horizon-server" "$folder/horizon-prepare"
-          "$folder/horizon-engine" --help | grep -q -- '--resources'
-          [[ "$("$folder/horizon-server" --version)" == "horizon-server $HORIZON_VERSION" ]]
-          cd dist
-          rm -f "${{ matrix.server_asset }}"
-          tar czf "${{ matrix.server_asset }}" "${{ matrix.server_dir }}"
-          ls -l "${{ matrix.server_asset }}"
-      - uses: actions/upload-artifact@v7
-        if: matrix.server_asset
-        with:
-          name: ${{ matrix.server_asset }}
-          path: dist/${{ matrix.server_asset }}
-          if-no-files-found: error
-          retention-days: 3
-      - name: The signing keychain, locked again
-        if: always() && runner.os == 'macOS' && vars.MACOS_SIGN_IDENTITY != '' && inputs.developer_id
-        run: packaging/macos/keychain.sh lock
-

.github/workflows/launcher.yml

@@ -1,426 +0,0 @@
-name: launcher
-# Builds the launcher on Linux, macOS, Windows x64 and ARM64, and releases it by itself (docs/release-flow.md): after a
-# push to main that changes the launcher or a crate it builds in (the paths below),
-# every 10 minutes (a release waiting for merges to settle goes out) and by hand, tools/release_train.py decides as
-# for the game.
-# A release is [email protected] on the release line in .github/release-line.txt (docs/versioning.md); without it
-# launcher-vX.Y.Z, the patch after the last launcher tag or the next minor when a merged pull request is labelled
-# feature. The version and the tag are given to the build (HORIZON_LAUNCHER_VERSION, HORIZON_LAUNCHER_TAG): no bump
-# commits.
-# Never marked latest. Pushes to launcher branches only build. RELEASES_PAUSED=1 stops releases.
-# Linux ships two archives of one binary: the .tar.gz the launcher updates itself from, and an
-# AppImage (packaging/linux/appimage.sh) for players without a distribution package, which replaces
-# itself instead (launcher/src/backend.rs).
-# macOS: Apple Silicon, and Intel cross-built for x86_64-apple-darwin on the same runner, its tests and smoke test
-# under Rosetta 2 (#1161). With the repository variable MACOS_SIGN_IDENTITY set, Horizon.app and the .dmg are signed with
-# Developer ID, notarized and stapled, from the runner's signing keychain (packaging/macos/README.md);
-# unset (forks), they are signed ad hoc.
-# Windows ships each architecture's launcher in its ZIP (what a launcher updates itself from) and as
-# horizon-launcher-setup.exe or horizon-launcher-setup-arm64.exe, which opens the per-user installer instead of Home
-# (launcher/src/installer.rs).
-#   gh workflow run launcher --ref <branch>                    # dry run: builds everything, publishes nothing
-#   gh workflow run launcher --ref main -f dry_run=false -f force=true
-
-on:
-  push:
-    branches: [main, launcher, 'launcher-*']
-    paths:
-      # Everything the launcher is built and packaged from, as tools/release_train.py's LAUNCHER_PATHS.
-      - 'launcher/**'
-      - 'crates/horizon-bench/**'
-      - 'crates/horizon-friends/**'
-      - 'crates/horizon-mcp/**'
-      - 'crates/horizon-mods/**'
-      - 'crates/horizon-port-pack/**'
-      - 'crates/horizon-prepare/**'
-      - 'crates/horizon-release-sign/**'
-      - 'crates/horizon-telemetry/**'
-      - 'crates/horizon-theme/**'
-      - 'packaging/linux/**'
-      - 'packaging/icons/**'
-      - '.github/workflows/launcher.yml'
-  schedule:
-    - cron: '7-59/10 * * * *'
-  workflow_dispatch:
-    inputs:
-      dry_run:
-        description: Build everything and write the notes, but publish nothing
-        type: boolean
-        default: true
-      force:
-        description: Release even without launcher changes, before merges settle or while paused
-        type: boolean
-        default: false
-
-permissions:
-  contents: read
-
-concurrency:
-  group: launcher-${{ github.ref == 'refs/heads/main' && 'release' || github.ref }}
-  cancel-in-progress: false
-
-env:
-  # Test runs never reach the telemetry server: no live-count ping, no uploads (docs/telemetry.md).
-  HORIZON_TELEMETRY_URL: "off"
-
-jobs:
-  decide:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    outputs:
-      release: ${{ steps.decide.outputs.release }}
-      tag: ${{ steps.decide.outputs.tag }}
-      head: ${{ steps.decide.outputs.head }}
-      version: ${{ steps.decide.outputs.version }}
-      dry_run: ${{ steps.mode.outputs.dry_run }}
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-      - id: mode
-        # Off main every run is a dry run (a launcher branch's push only builds).
-        run: echo "dry_run=${{ github.ref != 'refs/heads/main' || (github.event_name == 'workflow_dispatch' && inputs.dry_run) }}" >> "$GITHUB_OUTPUT"
-      - id: decide
-        env:
-          GH_TOKEN: ${{ github.token }}
-          RELEASES_PAUSED: ${{ vars.RELEASES_PAUSED }}
-          # A push or a run off main builds its own commit; otherwise main's newest commit with green checks.
-          HEAD_SHA: ${{ (github.event_name == 'push' || steps.mode.outputs.dry_run == 'true') && github.sha || '' }}
-          FORCE: ${{ inputs.force && 'yes' || '' }}
-        run: |
-          python3 tools/release_train.py decide --kind launcher ${HEAD_SHA:+--head "$HEAD_SHA"} ${FORCE:+--force} | tee decision.json
-          echo "### $(jq -r '.reason' decision.json)" >> "$GITHUB_STEP_SUMMARY"
-          tag=$(jq -r '.tag' decision.json)
-          version=${tag#launcher-v}
-          echo "version=${version#launcher@}" >> "$GITHUB_OUTPUT"
-          # A dry run (and a launcher branch's push) builds whatever the decision.
-          if [[ "${{ steps.mode.outputs.dry_run }}" == true ]]; then
-            echo "release=true" >> "$GITHUB_OUTPUT"
-            echo "head=$GITHUB_SHA" >> "$GITHUB_OUTPUT"
-          fi
-
-  build:
-    needs: decide
-    if: needs.decide.outputs.release == 'true'
-    name: build ${{ matrix.name }}
-    # Windows ARM64 is new: its failure never holds the other platforms' release (the signing job
-    # needs this job, and a failed entry of it would fail it). The release steps leave the missing
-    # ARM64 files out with a warning.
-    continue-on-error: ${{ matrix.name == 'windows-arm64' }}
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - name: linux
-            os: ubuntu-22.04
-            asset: horizon-launcher-linux-x86_64.tar.gz
-            binary: horizon-launcher
-          - name: macos
-            mac: true
-            asset: horizon-launcher-macos-arm64.zip
-            binary: horizon-launcher
-            mac_arch: arm64
-          - name: macos-x64
-            mac: true
-            target: x86_64-apple-darwin
-            asset: horizon-launcher-macos-x64.zip
-            binary: horizon-launcher
-            mac_arch: x64
-          - name: windows
-            os: windows-latest
-            asset: horizon-launcher-windows-x64.zip
-            binary: horizon-launcher.exe
-            pe_arch: x64
-            setup_asset: horizon-launcher-setup.exe
-            # The C runtime linked in: without it the launcher asks for VCRUNTIME140.dll,
-            # which only the Visual C++ redistributable installs.
-            rustflags: -C target-feature=+crt-static
-          - name: windows-arm64
-            os: windows-11-vs2026-arm
-            target: aarch64-pc-windows-msvc
-            asset: horizon-launcher-windows-arm64.zip
-            binary: horizon-launcher.exe
-            pe_arch: arm64
-            setup_asset: horizon-launcher-setup-arm64.exe
-            # The C runtime linked in, so the standalone ARM64 launcher needs no redistributable.
-            rustflags: -C target-feature=+crt-static
-    runs-on: ${{ matrix.mac && (vars.MAC_RUNNER || 'ludovics-mac-mini') || matrix.os }}
-    # Notarizing the app and then the .dmg can take a few minutes each.
-    timeout-minutes: ${{ matrix.mac && 60 || 40 }}
-    env:
-      RUSTFLAGS: ${{ matrix.rustflags }}
-      # Where cargo puts the launcher: target/release, or target/<target>/release for another target.
-      BIN: ${{ matrix.target && format('target/{0}/release', matrix.target) || 'target/release' }}
-      # Horizon's Azure app for Microsoft sign-in (docs/microsoft-account.md): a repository
-      # variable, not a secret. Unset, the launcher says sign-in is not configured.
-      HORIZON_MSA_CLIENT_ID: ${{ vars.HORIZON_MSA_CLIENT_ID }}
-      # The mod browser's CurseForge source (docs/mod-browser.md#curseforge): a repository secret. Unset, the
-      # launcher searches Modrinth only.
-      HORIZON_CURSEFORGE_API_KEY: ${{ secrets.HORIZON_CURSEFORGE_API_KEY }}
-      # The release's version and tag, built in (launcher/src/backend.rs VERSION and own_tag: the tag says which
-      # line it is on, docs/versioning.md); a launcher branch's build keeps Cargo.toml's.
-      HORIZON_LAUNCHER_VERSION: ${{ (github.event_name != 'push' || github.ref == 'refs/heads/main') && needs.decide.outputs.version || '' }}
-      HORIZON_LAUNCHER_TAG: ${{ (github.event_name != 'push' || github.ref == 'refs/heads/main') && needs.decide.outputs.tag || '' }}
-    defaults:
-      run:
-        working-directory: launcher
-        shell: bash
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: ${{ needs.decide.outputs.head }}
-          persist-credentials: false
-          # Always from a clean checkout, the Mac mini's runner too: its work folder is shared with pull requests'
-          # parity jobs, and nothing they leave may end up in a launcher release (target/ is rebuilt from scratch).
-          clean: true
-      - uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: ${{ matrix.target }}
-      - uses: Swatinem/rust-cache@v2
-        if: runner.environment == 'github-hosted'
-        with:
-          workspaces: launcher
-          shared-key: launcher-${{ matrix.name }}
-      - name: Linux libraries GPUI links to
-        if: runner.os == 'Linux'
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y libxkbcommon-x11-dev libwayland-dev libx11-xcb-dev libfontconfig-dev libvulkan-dev libasound2-dev patchelf
-      - name: Metal shaders compiled now, or at run time without the Metal toolchain
-        # GPUI compiles its Metal shaders when it builds; the Mac mini has Xcode without the Metal toolchain
-        # (xcodebuild -downloadComponent MetalToolchain), so there they are compiled when the launcher starts.
-        if: runner.os == 'macOS'
-        run: |
-          if ! xcrun metal --version > /dev/null 2>&1; then
-            echo "::notice::No Metal toolchain on this runner: GPUI compiles its shaders at run time"
-            echo "LAUNCHER_FEATURES=gpui_platform/runtime_shaders" >> "$GITHUB_ENV"
-          fi
-      # Every test target (the library, the binary, tests/), on each system the launcher ships for.
-      - run: cargo test --release --locked ${{ matrix.target && format('--target {0}', matrix.target) || '' }} ${LAUNCHER_FEATURES:+--features "$LAUNCHER_FEATURES"}
-      - run: cargo build --release --locked ${{ matrix.target && format('--target {0}', matrix.target) || '' }} ${LAUNCHER_FEATURES:+--features "$LAUNCHER_FEATURES"}
-      - name: Verify Windows executable architecture
-        if: runner.os == 'Windows'
-        run: python ../tools/check_pe_arch.py "${{ matrix.pe_arch }}" "$BIN/${{ matrix.binary }}"
-      - name: The version is the release's
-        run: |
-          out=$("$BIN/${{ matrix.binary }}" --version)
-          echo "$out"
-          expected="${HORIZON_LAUNCHER_VERSION:-$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml | head -1)}"
-          [[ "$out" == "horizon-launcher $expected" ]] || { echo "::error::expected horizon-launcher $expected"; exit 1; }
-      - name: Only system libraries
-        run: |
-          file="$BIN/${{ matrix.binary }}"
-          case "$RUNNER_OS" in
-            Windows) python ../tools/check_imports.py "$file" ;;
-            macOS) others=$(otool -L "$file" | tail -n +2 | awk '{print $1}' | grep -v -E '^(/usr/lib/|/System/Library/)' || true)
-                   [[ -z "$others" ]] || { echo "::error::links $others"; exit 1; } ;;
-          esac
-      - name: Smoke test
-        env:
-          HORIZON_LAUNCHER_NO_SELF_UPDATE: '1'
-          HORIZON_GITHUB_TOKEN: ${{ github.token }}
-        run: |
-          set -euo pipefail
-          export HORIZON_LAUNCHER_HOME="${RUNNER_TEMP//\\//}/horizon-launcher-smoke"
-          export HORIZON_HOME="$HORIZON_LAUNCHER_HOME/game"
-          rm -rf "$HORIZON_LAUNCHER_HOME"
-          launcher="$PWD/$BIN/${{ matrix.binary }}"
-          # GitHub's API rate-limits shared runner addresses now and then: try a few times.
-          retry() { for i in 1 2 3 4; do "$@" && return 0; sleep $((i * 15)); done; return 1; }
-          retry "$launcher" versions
-          "$launcher" links --json
-          # The Intel Mac launcher can come out before any game build has its asset (#1161): then there is nothing
-          # to install yet. Only that entry skips, and only on a version list that parsed and had no build here
-          # (exit 3); a launcher or a script that fails still fails the step. The Windows ARM64 launcher always has
-          # one: it installs the x64 build where a release has no ARM64 one (backend.rs, GAME_FALLBACK).
-          if [[ "${{ matrix.name }}" == macos-x64 ]]; then
-            versions=$(retry "$launcher" --json versions)
-            no_build='import json, sys; sys.exit(3 if not any(r["available_here"] for r in json.load(sys.stdin)) else 0)'
-            status=0
-            python3 -c "$no_build" <<<"$versions" || status=$?
-            if [[ $status == 3 ]]; then
-              echo "::warning::No game build has an asset for ${{ matrix.name }} yet: install not tested"
-              rm -rf "$HORIZON_LAUNCHER_HOME"
-              exit 0
-            fi
-            [[ $status == 0 ]] || exit $status
-          fi
-          retry "$launcher" install latest
-          "$launcher" versions --installed
-          # `install latest` is the Nightly since #3342 (versions/nightly-<date>-<commit>), a vX.Y.Z before.
-          clients=("$HORIZON_LAUNCHER_HOME"/versions/*/horizon-client*)
-          client="${clients[0]}"
-          echo "installed client: $client"
-          [[ -f "$client" ]] || { echo "::error::no game installed under versions/"; exit 1; }
-          # The game's Linux build is the game's to keep portable (release.yml checks it): a
-          # release linked to a Nix store is a warning here, not a broken launcher.
-          soft() { if [[ "$RUNNER_OS" == "Linux" ]]; then "$@" || echo "::warning::$* failed"; else "$@"; fi; }
-          if [[ "$RUNNER_OS" == "Windows" ]]; then
-            if ! python ../tools/check_pe_arch.py "${{ matrix.pe_arch }}" "$client"; then
-              # A Nightly without an ARM64 build: the ARM64 launcher installs the x64 one (backend.rs, GAME_FALLBACK).
-              [[ "${{ matrix.pe_arch }}" == arm64 ]] && python ../tools/check_pe_arch.py x64 "$client" || exit 1
-              echo "::warning::the latest game has no ARM64 build: the launcher installed the x64 one"
-            fi
-            python ../tools/check_imports.py "$client"
-          elif [[ "$RUNNER_OS" == "Linux" ]]; then
-            soft python3 ../tools/check_imports.py "$client"
-          fi
-          # The client starts: --help prints before any window or GPU is needed.
-          help() { "$client" --help > "$RUNNER_TEMP/help.txt" 2>&1 && head -3 "$RUNNER_TEMP/help.txt" && grep -q -- '--resources' "$RUNNER_TEMP/help.txt"; }
-          soft help
-          # The per-user Windows setup: the same binary under the setup's name installs into a scratch
-          # folder, and the copy it installs uninstalls itself. HKCU of the runner only.
-          if [[ "$RUNNER_OS" == "Windows" ]]; then
-            setup="$RUNNER_TEMP/setup-smoke"
-            cp "$launcher" "$RUNNER_TEMP/horizon-launcher-setup.exe"
-            "$RUNNER_TEMP/horizon-launcher-setup.exe" setup --quiet --dir "$setup"
-            installed="$setup/Horizon Launcher/horizon-launcher.exe"
-            [[ -f "$installed" ]] || { echo "::error::the setup copied no launcher"; exit 1; }
-            "$installed" uninstall --quiet
-            [[ ! -f "$installed" ]] || { echo "::error::uninstall left the launcher"; exit 1; }
-            rm -rf "$setup"
-          fi
-          rm -rf "$HORIZON_LAUNCHER_HOME"
-      - name: The signing keychain, unlocked
-        if: runner.os == 'macOS' && vars.MACOS_SIGN_IDENTITY != ''
-        env:
-          MACOS_SIGN_IDENTITY: ${{ vars.MACOS_SIGN_IDENTITY }}
-        run: ../packaging/macos/keychain.sh unlock
-      - name: Package
-        env:
-          MACOS_SIGN_IDENTITY: ${{ vars.MACOS_SIGN_IDENTITY }}
-        run: |
-          rm -rf dist out && mkdir -p out
-          if [[ "$RUNNER_OS" == "macOS" ]]; then
-            # Horizon.app, zipped (self-update) and in a .dmg (installer), signed (and notarized with
-            # Developer ID): packaging/macos.
-            python3 -m venv "$RUNNER_TEMP/dmg" && "$RUNNER_TEMP/dmg/bin/pip" install --quiet dmgbuild==1.6.5
-            version=${HORIZON_LAUNCHER_VERSION:-$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml | head -1)}
-            DMGBUILD="$RUNNER_TEMP/dmg/bin/dmgbuild" ../packaging/macos/package.sh "$BIN/${{ matrix.binary }}" "$version" out ${{ matrix.mac_arch }}
-            rm -rf out/Horizon.app
-          else
-            version=${HORIZON_LAUNCHER_VERSION:-$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml | head -1)}
-            if [[ "$RUNNER_OS" == "Linux" ]]; then
-              # The .tar.gz below is what the launcher updates itself from; the AppImage is what a
-              # player downloads and double-clicks, and it replaces itself instead
-              # (packaging/linux/appimage.sh, launcher/src/backend.rs).
-              ../packaging/linux/appimage.sh "$BIN/${{ matrix.binary }}" "$version" out
-            fi
-            mkdir -p dist
-            cp "$BIN/${{ matrix.binary }}" dist/
-            if [[ "${{ matrix.asset }}" == *.tar.gz ]]; then
-              (cd dist && tar czf ../out/${{ matrix.asset }} ${{ matrix.binary }})
-            else
-              (cd dist && 7z a ../out/${{ matrix.asset }} ${{ matrix.binary }})
-            fi
-          fi
-          ls -l out
-      - name: Setup exe (Windows)
-        # The launcher's binary under another name: started with no arguments it shows the per-user
-        # installer instead of Home (launcher/src/installer.rs). Its name is what makes it the setup,
-        # so the ZIP's copy stays the launcher. Both go into the release's signed SHA256SUMS.
-        if: runner.os == 'Windows'
-        run: cp "$BIN/${{ matrix.binary }}" "out/${{ matrix.setup_asset }}"
-      - uses: actions/upload-artifact@v7
-        with:
-          name: ${{ matrix.asset }}
-          path: launcher/out/*
-          retention-days: 3
-      - name: The signing keychain, locked again
-        if: always() && runner.os == 'macOS' && vars.MACOS_SIGN_IDENTITY != ''
-        run: ../packaging/macos/keychain.sh lock
-
-  sign:
-    needs: [decide, build]
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    # The only job that holds the release signing key, a secret of the `release` environment, which only main's real
-    # releases enter (dry runs sign with a throwaway key). It runs no code from the repository but
-    # tools/ci/sign_release.sh, which calls only the runner's sha256sum and OpenSSL (docs/release-flow.md).
-    environment: ${{ needs.decide.outputs.dry_run != 'true' && 'release' || '' }}
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          sparse-checkout: tools/ci/sign_release.sh
-          sparse-checkout-cone-mode: false
-          persist-credentials: false
-      - uses: actions/download-artifact@v8
-        with:
-          path: dist
-          pattern: horizon-launcher-*
-          merge-multiple: true
-      - name: Sign the checksums (SHA256SUMS, SHA256SUMS.sig)
-        env:
-          RELEASE_SIGNING_KEY: ${{ secrets.RELEASE_SIGNING_KEY }}
-          RELEASE_SIGNING_KEY_NEXT: ${{ secrets.RELEASE_SIGNING_KEY_NEXT }}
-          EPHEMERAL: ${{ needs.decide.outputs.dry_run == 'true' && 'yes' || '' }}
-          TAG: ${{ needs.decide.outputs.tag }}
-        run: bash tools/ci/sign_release.sh "$TAG" dist/horizon-launcher-*
-      - uses: actions/upload-artifact@v7
-        with:
-          name: signature
-          path: dist/SHA256SUMS*
-          if-no-files-found: error
-          retention-days: 3
-      - uses: actions/upload-artifact@v7
-        if: needs.decide.outputs.dry_run == 'true'
-        with:
-          name: ephemeral.pub
-          path: dist/ephemeral.pub
-          retention-days: 3
-
-  release:
-    needs: [decide, build, sign]
-    runs-on: ubuntu-latest
-    timeout-minutes: 15
-    permissions:
-      contents: write
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-      - name: Notes
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          python3 tools/release_train.py notes --kind launcher --tag "${{ needs.decide.outputs.tag }}" \
-            --head "${{ needs.decide.outputs.head }}" --out notes > /dev/null
-          { echo "## $(cat notes/title.txt)"; echo; cat notes/body.md; } >> "$GITHUB_STEP_SUMMARY"
-      - uses: actions/download-artifact@v8
-        with:
-          path: dist
-          merge-multiple: true
-      - name: The signature, checked as launchers check it
-        env:
-          TAG: ${{ needs.decide.outputs.tag }}
-          EPHEMERAL: ${{ needs.decide.outputs.dry_run == 'true' && 'yes' || '' }}
-        run: |
-          key=(); [[ -n "$EPHEMERAL" ]] && key=(--key "$(cat dist/ephemeral.pub)")
-          cargo run --locked --quiet -p horizon-release-sign -- verify --tag "$TAG" --publishing "${key[@]}" dist
-      # Never marked latest: Horizon's own releases stay the repository's latest.
-      - name: The Windows ARM64 launcher, if it built
-        # Its build may fail without holding the release (continue-on-error): the release then has no ARM64
-        # files, and ARM64 launchers stay on their version until one has (backend::launcher_update_from).
-        run: |
-          for file in horizon-launcher-windows-arm64.zip horizon-launcher-setup-arm64.exe; do
-            [[ -f "dist/$file" ]] || echo "::warning::$file is missing: this release goes out without it"
-          done
-      - name: Publish ${{ needs.decide.outputs.tag }}
-        if: needs.decide.outputs.dry_run != 'true'
-        env:
-          GH_TOKEN: ${{ github.token }}
-          TAG: ${{ needs.decide.outputs.tag }}
-        run: |
-          signature=(); [[ -f dist/SHA256SUMS.sig ]] && signature=(dist/SHA256SUMS.sig)
-          gh release create "$TAG" --target "${{ needs.decide.outputs.head }}" --title "$(cat notes/title.txt)" \
-            --notes-file notes/body.md --latest=false dist/horizon-launcher-* dist/SHA256SUMS "${signature[@]}"
-      - name: Dry run, the release that would be published
-        if: needs.decide.outputs.dry_run == 'true'
-        run: |
-          echo "Would publish ${{ needs.decide.outputs.tag }} at ${{ needs.decide.outputs.head }}: $(cat notes/title.txt)"
-          ls -l dist
-      - uses: actions/upload-artifact@v7
-        with:
-          name: launcher-release-notes
-          path: notes/
-          retention-days: 3

.github/workflows/mod-registry.yml

@@ -1,40 +0,0 @@
-name: mod-registry
-# The submission service is its own workspace (crates/horizon-mod-registry), so the checks job doesn't build
-# it: this one does, when it or horizon-mods (the checks it shares with the launcher and the game) changes.
-on:
-  push:
-    branches: [main]
-    paths:
-      - 'crates/horizon-mods/**'
-      - 'crates/horizon-mod-registry/**'
-      - '.github/workflows/mod-registry.yml'
-  pull_request:
-    paths:
-      - 'crates/horizon-mods/**'
-      - 'crates/horizon-mod-registry/**'
-      - '.github/workflows/mod-registry.yml'
-permissions:
-  contents: read
-concurrency:
-  group: mod-registry-${{ github.event.pull_request.number || github.sha }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
-jobs:
-  check:
-    # Our checks runners (label horizon-checks, docs/ci-runners.md); SELF_HOSTED_CI=light or off: GitHub's.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
-    timeout-minutes: 20
-    defaults:
-      run:
-        working-directory: crates/horizon-mod-registry
-    steps:
-      - uses: actions/checkout@v7
-      - run: rustup toolchain install stable --profile minimal --component rustfmt --component clippy
-      # Ours keep their build folder between jobs.
-      - uses: Swatinem/rust-cache@v2
-        if: runner.environment == 'github-hosted'
-        with:
-          workspaces: crates/horizon-mod-registry
-          save-if: ${{ github.ref == 'refs/heads/main' }}
-      - run: cargo +stable fmt --check
-      - run: cargo +stable clippy --all-targets --locked -- -D warnings
-      - run: cargo +stable test --locked

.github/workflows/mojang-republish.yml

@@ -1,32 +0,0 @@
-name: mojang republish
-# Hourly: does Mojang's version manifest list a pinned-version JSON that research-lock.json does not know?
-# If so, one issue "Mojang republished <version>: <sha8>" with the hashes and a lock snippet
-# (tools/ci/mojang_republish.py). Reads only Mojang's public manifest.
-#   gh workflow run "mojang republish" -f dry_run=true
-on:
-  schedule:
-    - cron: '23 * * * *'  # hourly: a republished JSON breaks horizon-prepare for every new player until accepted
-  workflow_dispatch:
-    inputs:
-      dry_run:
-        description: Only print what it would do with issues
-        type: boolean
-        default: false
-permissions:
-  contents: read
-  issues: write
-concurrency:
-  group: mojang-republish
-  cancel-in-progress: false
-
-jobs:
-  check:
-    # One of our small runners (label horizon-light, docs/ci-runners.md): main's script, Mojang's public manifest.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
-    timeout-minutes: 10
-    steps:
-      - uses: actions/checkout@v7
-      - name: Check the manifest
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: python3 tools/ci/mojang_republish.py ${{ inputs.dry_run && '--dry-run' || '' }}

.github/workflows/native-hook-stamp.yml

@@ -1,59 +0,0 @@
-name: native hook stamp
-# Opens a PR that numbers pending fragments after they merge. Only pushes to
-# main run main's own tool; fragments are read as data, not PR code.
-
-on:
-  push:
-    branches: [main]
-    paths:
-      - 'tools/native-hook-fragments/*.json'
-
-permissions:
-  contents: read
-
-concurrency:
-  group: native-hook-stamp
-  cancel-in-progress: false
-
-jobs:
-  stamp:
-    if: github.repository == 'horizon-rust/horizon'
-    runs-on: ubuntu-latest
-    permissions:
-      contents: write
-      pull-requests: write
-    timeout-minutes: 10
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: main
-          fetch-depth: 0
-      - name: Open a stamp pull request
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          set -eu
-          branch=automation/native-hook-stamp
-          if [ -n "$(gh pr list --state open --head "$branch" --json number --jq '.[0].number // empty')" ]; then
-            echo "A stamp pull request is already open."
-            exit 0
-          fi
-          python3 tools/stamp_native_hooks.py
-          if git diff --quiet; then
-            echo "No fragments to stamp."
-            exit 0
-          fi
-          git config user.name 'github-actions[bot]'
-          git config user.email '41898282+github-actions[bot]@users.noreply.github.com'
-          git checkout -b "$branch"
-          git add -u
-          git commit -m 'Stamp native hook API fragments'
-          if git ls-remote --exit-code --heads origin "$branch" >/dev/null; then
-            git fetch origin "+refs/heads/$branch:refs/remotes/origin/$branch"
-          fi
-          git push --force-with-lease origin "$branch"
-          # The repo doesn't let GitHub Actions open pull requests (that setting would also let it approve them):
-          # the branch is pushed, and a maintainer opens the PR from it.
-          if ! gh pr create --base main --head "$branch" --title 'Stamp native hook API fragments' --body 'Assign API numbers to the pending native hook fragments. Close and reopen this PR to run CI.'; then
-            echo "::warning::Stamped fragments are on $branch; open a pull request from it (GitHub Actions may not open one here)."
-          fi

.github/workflows/nightly-build.yml

@@ -1,315 +0,0 @@
-name: nightly build
-run-name: nightly build${{ inputs.request && format(' (request {0})', inputs.request) || '' }}
-# The Nightly, the only build Horizon ships since 2026-10-28 (docs/release-flow.md "Nightly"; Ludovic). When the batch
-# train decides (release.yml, with the commit as `base`), once a night, and when a trusted
-# reviewer asks (`/nightly 2640 2642`, nightly-command.yml), it builds main plus the pull requests the reviewers
-# picked, merged in order (tools/ci/nightly_set.py), or main alone with none picked. Main is its newest commit where
-# checks and parity-main passed (or the `base` input), as for a release, and no Nightly is published while a
-# release-blocker is open. It publishes the result as the `nightly` pre-release, which every launcher and
-# `horizon-server update` install. The previous nightly stays a week as nightly-<date>.
-#
-# Why the signing key never meets the pull requests' code:
-# - `pick` merges the picked heads onto main with `git merge-tree --write-tree`: git objects only, no working tree,
-#   so none of their files reaches the disk and no hook, filter or script of theirs runs. It refuses any pull
-#   request that changes a path CODEOWNERS gives to Ludovic (this folder, tools/ci/, the signing and update code),
-#   pushes the merge as nightly/build-<date>-<n> and saves the set on the nightly-state branch.
-# - This file, game-build.yml and every script below run from main's copy: a schedule runs the default branch, and
-#   `uses: ./…` takes the caller's commit. A picked pull request's own .github/ is never read.
-# - `build` (game-build.yml, `trusted: false`) never reaches a release's tools: its macOS jobs run on the runner
-#   that already runs pull requests' parity jobs, never the release runner; its Rust cache has its own key and is
-#   never saved; and releases don't read the machine's shared sccache.
-# - `build` (game-build.yml) checks out and compiles the merge with no secrets: its token reads contents only and
-#   isn't kept in the checkout; the macOS programs are signed ad hoc (Developer ID needs the runner's keychain,
-#   which stays locked for nightlies).
-# - `sign` is the only job with RELEASE_SIGNING_KEY. It checks out nothing but main's tools/ci/sign_release.sh, which
-#   runs the runner's sha256sum and OpenSSL over the archives: it hashes them, never runs them. The signed message
-#   names the channel ("horizon release nightly"), so a nightly's signature can't pass for a release's.
-# - `publish` verifies the signature with main's horizon-release-sign, checks the smoke test, and only then moves
-#   the tag. Like sign, it never executes what build produced.
-# - The source ships with the build: `pick` writes horizon-source.tar.gz with `git archive` (git objects again, nothing
-#   run), `sign` signs it with the builds, and `publish` attaches it and tags the commit nightly-source/<date>-<short>
-#   for good (the dated release and the build branch go after 7 days; native mods pin the commit: docs/native-mods.md).
-#   gh workflow run "nightly build"                     # now (skips when the pick is the same commit as last night's)
-#   gh workflow run "nightly build" -f force=true       # build and publish even if unchanged
-#   gh workflow run "nightly build" -f dry_run=true     # build and sign with a throwaway key, publish nothing
-on:
-  schedule:
-    - cron: '17 20 * * *'  # 20:17 UTC: after the day's waves, before the 03:07 Paris parity audit takes the Mac mini
-  workflow_dispatch:
-    inputs:
-      force:
-        description: Build and publish even if tonight's pick is the commit already published
-        type: boolean
-        default: false
-      dry_run:
-        description: Build and sign with a throwaway key, publish nothing
-        type: boolean
-        default: false
-      issue:
-        description: The issue or pull request whose `/nightly` comment asked for this build (answered there)
-        type: string
-        default: ''
-      request:
-        description: The command's id, in the run's name so it can link the run
-        type: string
-        default: ''
-      prs:
-        description: A dry run's own set, `2640@<head> 2642@<head>` (the saved set stays)
-        type: string
-        default: ''
-      base:
-        description: The commit of main to build on (default main's newest with green checks and parity-main)
-        type: string
-        default: ''
-      urgent:
-        description: Past the day's cap of 12 builds (the train, for a release-now pull request or a forced run)
-        type: boolean
-        default: false
-permissions:
-  contents: read
-concurrency:
-  # One build at a time. A newer request replaces one still waiting: it builds the set as it is by then, so no pick
-  # is lost.
-  group: nightly-build
-  cancel-in-progress: false
-jobs:
-  pick:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    permissions:
-      contents: write       # nightly/build-<date>-<n> and the nightly-state branch (main is protected)
-      issues: write         # says in the thread when the picked pull requests conflict
-      pull-requests: write
-      actions: read         # main's newest green checks and parity-main runs (the base)
-    outputs:
-      build: ${{ steps.pick.outputs.build }}
-      sha: ${{ steps.pick.outputs.sha }}
-      short: ${{ steps.pick.outputs.short }}
-      source: ${{ steps.pick.outputs.source }}
-      date: ${{ steps.pick.outputs.date }}
-      version: ${{ steps.pick.outputs.version }}
-      nightly: ${{ steps.pick.outputs.nightly }}
-      source_tag: ${{ steps.pick.outputs.source_tag }}
-      dry_run: ${{ steps.mode.outputs.dry_run }}
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-          persist-credentials: false
-      - id: mode
-        # A dry run never publishes; a hand-started run off main is always one.
-        run: echo "dry_run=${{ github.event_name == 'workflow_dispatch' && (inputs.dry_run || github.ref != 'refs/heads/main') }}" >> "$GITHUB_OUTPUT"
-      - id: pick
-        env:
-          GH_TOKEN: ${{ github.token }}
-          FORCE: ${{ (inputs.force || steps.mode.outputs.dry_run == 'true') && 'yes' || '' }}
-          DRY_RUN: ${{ steps.mode.outputs.dry_run }}
-          NIGHTLY_ISSUE: ${{ inputs.issue }}
-          NIGHTLY_PRS: ${{ inputs.prs }}
-          NIGHTLY_BASE: ${{ inputs.base }}
-          NIGHTLY_URGENT: ${{ inputs.urgent }}
-        run: |
-          python3 tools/ci/nightly.py pick ${FORCE:+--force} | tee -a "$GITHUB_STEP_SUMMARY"
-          { echo; cat nightly-notes.md; } >> "$GITHUB_STEP_SUMMARY"
-      - name: Old nightly/build-* branches deleted (scheduled runs only)
-        # Ludovic, 2026-10-27: older than 7 days, but never the newest build or one a published nightly points to;
-        # nothing but nightly/build-* (nightly.py stale_builds, tests/test_nightly.py).
-        if: github.event_name == 'schedule'
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          { echo "### nightly/build-* branches"; python3 tools/ci/nightly.py prune-builds --days 7; } | tee -a "$GITHUB_STEP_SUMMARY"
-      - name: The source of the build (horizon-source.tar.gz)
-        if: steps.pick.outputs.build == 'true'
-        env:
-          SHA: ${{ steps.pick.outputs.sha }}
-        run: git archive --format=tar.gz --prefix="horizon-${SHA:0:7}/" -o horizon-source.tar.gz "$SHA"
-      - uses: actions/upload-artifact@v7
-        if: steps.pick.outputs.build == 'true'
-        with:
-          name: horizon-source
-          path: horizon-source.tar.gz
-          if-no-files-found: error
-          retention-days: 3
-      - uses: actions/upload-artifact@v7
-        with:
-          name: nightly-notes
-          path: nightly-notes.md
-          retention-days: 3
-
-  build:
-    needs: pick
-    if: needs.pick.outputs.build == 'true'
-    uses: ./.github/workflows/game-build.yml
-    with:
-      ref: ${{ needs.pick.outputs.sha }}
-      version: ${{ needs.pick.outputs.version }}
-      nightly: ${{ needs.pick.outputs.nightly }}
-      developer_id: false
-      trusted: false  # it can hold unreviewed pull requests: their own cache key, never saved, not the release runner
-
-  sign:
-    needs: [pick, build]
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    # The key's only job: main's sign_release.sh hashes the archives and signs with the runner's OpenSSL.
-    environment: ${{ needs.pick.outputs.dry_run != 'true' && 'release' || '' }}
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          sparse-checkout: tools/ci/sign_release.sh
-          sparse-checkout-cone-mode: false
-          persist-credentials: false
-      - uses: actions/download-artifact@v8
-        with:
-          path: dist
-          pattern: horizon-*
-          merge-multiple: true
-      - name: Sign the checksums for the nightly channel (SHA256SUMS.sig) and for this build (SHA256SUMS.v2.sig)
-        # SHA256SUMS.sig is for launchers from before v2 (signed for "nightly"); SHA256SUMS.v2.sig is signed for
-        # nightly-<date>-<commit>, the version the release title names, which current launchers and servers
-        # require (docs/security.md, "Nightly signatures"). The publish step titles the release from the same values.
-        env:
-          RELEASE_SIGNING_KEY: ${{ secrets.RELEASE_SIGNING_KEY }}
-          RELEASE_SIGNING_KEY_NEXT: ${{ secrets.RELEASE_SIGNING_KEY_NEXT }}
-          EPHEMERAL: ${{ needs.pick.outputs.dry_run == 'true' && 'yes' || '' }}
-          ALSO_FOR: nightly-${{ needs.pick.outputs.date }}-${{ needs.pick.outputs.short }}
-        run: |
-          # Windows ARM64's build may fail without holding the Nightly (game-build.yml): then it is left out.
-          arm64=(); if [[ -f dist/horizon-windows-arm64.zip ]]; then arm64=(dist/horizon-windows-arm64.zip)
-          else echo "::warning::horizon-windows-arm64.zip is missing: SHA256SUMS goes out without it"; fi
-          musl=(); if [[ -f dist/horizon-linux-musl-x86_64.tar.gz ]]; then musl=(dist/horizon-linux-musl-x86_64.tar.gz)
-          else echo "::warning::horizon-linux-musl-x86_64.tar.gz is missing: SHA256SUMS goes out without it"; fi
-          bash tools/ci/sign_release.sh nightly dist/horizon-linux-x86_64.tar.gz dist/horizon-windows-x64.zip \
-            "${arm64[@]}" "${musl[@]}" \
-            dist/horizon-macos-arm64.zip dist/horizon-macos-x64.zip dist/horizon-server-linux-x86_64.tar.gz \
-            dist/horizon-source.tar.gz
-      - uses: actions/upload-artifact@v7
-        with:
-          name: signature
-          path: dist/SHA256SUMS*
-          if-no-files-found: error
-          retention-days: 3
-      - uses: actions/upload-artifact@v7
-        if: needs.pick.outputs.dry_run == 'true'
-        with:
-          name: ephemeral.pub
-          path: dist/ephemeral.pub
-          retention-days: 3
-
-  publish:
-    needs: [pick, build, sign]
-    runs-on: ubuntu-latest
-    timeout-minutes: 15
-    permissions:
-      contents: write
-      issues: read          # the open release-blocker issues (gate)
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          persist-credentials: false
-      - uses: actions/download-artifact@v8
-        with:
-          path: dist
-          merge-multiple: true
-      - name: The signatures, checked as launchers check them
-        env:
-          EPHEMERAL: ${{ needs.pick.outputs.dry_run == 'true' && 'yes' || '' }}
-          DATE: ${{ needs.pick.outputs.date }}
-          SHORT: ${{ needs.pick.outputs.short }}
-        run: |
-          key=(); [[ -n "$EPHEMERAL" ]] && key=(--key "$(cat dist/ephemeral.pub)")
-          cargo run --locked --quiet -p horizon-release-sign -- verify --tag nightly --publishing "${key[@]}" dist
-          # The version's own signature, which current launchers require: the title below names the same version.
-          cargo run --locked --quiet -p horizon-release-sign -- verify --tag "nightly-${DATE}-${SHORT}" \
-            --signature SHA256SUMS.v2.sig --publishing "${key[@]}" dist
-      - name: Ready to publish (the smoke test drew a world, no release-blocker is open)
-        # Right before publishing, as for a release: an issue labelled while the builds ran still holds it. A dry run
-        # only reports what a real run would do (that is how a blocker's fix is tried).
-        env:
-          GH_TOKEN: ${{ github.token }}
-          DRY_RUN: ${{ needs.pick.outputs.dry_run }}
-        run: |
-          if ! python3 tools/release_train.py gate --kind game --smoke dist/smoke-test.json --blockers; then
-            [[ "$DRY_RUN" == true ]] || { echo "::error::Nothing published"; exit 1; }
-            echo "::warning::A real run would publish nothing"
-          fi
-      - name: Publish as the `nightly` pre-release
-        if: needs.pick.outputs.dry_run != 'true'
-        env:
-          GH_TOKEN: ${{ github.token }}
-          SHA: ${{ needs.pick.outputs.sha }}
-          SHORT: ${{ needs.pick.outputs.short }}
-          DATE: ${{ needs.pick.outputs.date }}
-          SOURCE_TAG: ${{ needs.pick.outputs.source_tag }}
-        run: |
-          set -euo pipefail
-          python3 tools/ci/nightly.py rotate
-          signature=(); [[ -f dist/SHA256SUMS.sig ]] && signature=(dist/SHA256SUMS.sig)
-          [[ -f dist/SHA256SUMS.v2.sig ]] && signature+=(dist/SHA256SUMS.v2.sig)
-          # The title is what launchers parse (strictly) into the version SHA256SUMS.v2.sig is signed for.
-          [[ "${SHA:0:7}" == "$SHORT" ]] || { echo "::error::the build's commit isn't the one signed"; exit 1; }
-          # The ARM64 archive only when its build succeeded (the sign job left it out of SHA256SUMS otherwise).
-          arm64=()
-          if [[ -f dist/horizon-windows-arm64.zip ]]; then
-            arm64=("dist/horizon-windows-arm64.zip#Game files the launcher installs (Nightly): Windows ARM64 (horizon-windows-arm64.zip)")
-          else
-            echo "::warning::horizon-windows-arm64.zip is missing: the Nightly goes out without it (ARM64 launchers install the x64 build)"
-          fi
-          musl=()
-          if [[ -f dist/horizon-linux-musl-x86_64.tar.gz ]]; then
-            musl=("dist/horizon-linux-musl-x86_64.tar.gz#Game files for musl Linux (horizon-linux-musl-x86_64.tar.gz)")
-          else
-            echo "::warning::horizon-linux-musl-x86_64.tar.gz is missing: the Nightly goes out without it"
-          fi
-          # A pre-release, never GitHub's latest: the latest stays the last vX.Y.Z, which launchers and servers from
-          # before the Nightly-only switch keep (they don't read Nightlies).
-          gh release create nightly --prerelease --latest=false --target "$SHA" \
-            --title "Nightly $DATE · ${SHA:0:7}" --notes-file dist/nightly-notes.md \
-            "dist/horizon-linux-x86_64.tar.gz#Game files the launcher installs (Nightly): Linux (horizon-linux-x86_64.tar.gz)" \
-            "${musl[@]}" \
-            "dist/horizon-windows-x64.zip#Game files the launcher installs (Nightly): Windows (horizon-windows-x64.zip)" \
-            "${arm64[@]}" \
-            "dist/horizon-macos-arm64.zip#Game files the launcher installs (Nightly): macOS on Apple Silicon (horizon-macos-arm64.zip)" \
-            "dist/horizon-macos-x64.zip#Game files the launcher installs (Nightly): macOS on Intel (horizon-macos-x64.zip)" \
-            "dist/horizon-server-linux-x86_64.tar.gz#Nightly dedicated server for Linux (horizon-server-linux-x86_64.tar.gz)" \
-            "dist/horizon-source.tar.gz#Source of this Nightly, commit ${SHA:0:7} (horizon-source.tar.gz; kept for good as the tag $SOURCE_TAG)" \
-            dist/SHA256SUMS "${signature[@]}" dist/smoke-test.json
-          python3 tools/ci/nightly.py keep-source "$SHA" "$DATE"
-          python3 tools/ci/nightly.py prune --days 7
-      - name: Dry run, the nightly that would be published
-        if: needs.pick.outputs.dry_run == 'true'
-        run: |
-          echo "Would publish nightly at ${{ needs.pick.outputs.sha }} (${{ needs.pick.outputs.source }})"
-          ls -l dist
-
-  answer:
-    # Tells the thread that asked for this build how it ended. A conflict `pick` already explained there.
-    needs: [pick, build, sign, publish]
-    if: always() && inputs.issue != '' && needs.pick.result == 'success'
-    # One comment, no checkout and no secret: one of our small runners (label horizon-light, docs/ci-runners.md).
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
-    timeout-minutes: 5
-    permissions:
-      issues: write
-      pull-requests: write
-    steps:
-      - env:
-          GH_TOKEN: ${{ github.token }}
-          ISSUE: ${{ inputs.issue }}
-          BUILD: ${{ needs.pick.outputs.build }}
-          PUBLISHED: ${{ needs.publish.result }}
-          DRY_RUN: ${{ needs.pick.outputs.dry_run }}
-          NAME: Nightly ${{ needs.pick.outputs.date }} · ${{ needs.pick.outputs.short }}
-          RUN: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
-        run: |
-          if [[ "$BUILD" != true ]]; then
-            text="nothing new: the published Nightly is already this build."
-          elif [[ "$PUBLISHED" == success && "$DRY_RUN" == true ]]; then
-            text="the dry run built and signed $NAME; nothing was published. $RUN"
-          elif [[ "$PUBLISHED" == success ]]; then
-            text="published $NAME: https://github.com/$GITHUB_REPOSITORY/releases/tag/nightly. Launchers install it at their next check."
-          else
-            text="the build failed, nothing was published: $RUN"
-          fi
-          gh api "repos/$GITHUB_REPOSITORY/issues/$ISSUE/comments" -f body="🤖 Nightly: $text"

.github/workflows/nightly-command.yml

@@ -1,48 +0,0 @@
-name: nightly command
-# `/nightly …` comments: the trusted reviewers in .github/trusted-reviewers.txt (and Ludovic) pick the pull requests
-# the Nightly holds (docs/release-flow.md "Nightly channel", tools/ci/nightly_set.py). This job only checks who asked,
-# saves the set on the nightly-state branch, starts `nightly build` and answers in the thread.
-#
-# Why no pull request's code runs here, though the token can write:
-# - `issue_comment` always runs this file from main, whoever comments and wherever; a pull request's own copy of it
-#   is never read.
-# - It checks out main and runs main's nightly_set.py. The comment's text and author reach it as env vars, never in
-#   a shell line.
-# - It never checks out, fetches or merges a pull request: it reads their file lists through the API. The merge
-#   happens in nightly-build.yml's `pick`, with git objects only; their code runs in its `build`, without secrets.
-on:
-  issue_comment:
-    types: [created]
-permissions:
-  contents: read
-jobs:
-  command:
-    # Every other comment skips here, before a runner starts.
-    if: startsWith(github.event.comment.body, '/nightly') && github.event.comment.user.type != 'Bot'
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    permissions:
-      contents: write       # the nightly-state branch (main is protected)
-      actions: write        # starts `nightly build`
-      issues: write         # answers in the thread
-      pull-requests: write
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: main
-          persist-credentials: false
-          sparse-checkout: |
-            .github/CODEOWNERS
-            .github/trusted-reviewers.txt
-            tools/ci/nightly_set.py
-          sparse-checkout-cone-mode: false
-      - name: Run the command
-        env:
-          GH_TOKEN: ${{ github.token }}
-          BODY: ${{ github.event.comment.body }}
-          AUTHOR: ${{ github.event.comment.user.login }}
-          # Who may act is decided by this numeric ID: a login can be claimed by someone else after a rename.
-          AUTHOR_ID: ${{ github.event.comment.user.id }}
-          ISSUE: ${{ github.event.issue.number }}
-          COMMENT_URL: ${{ github.event.comment.html_url }}
-        run: python3 tools/ci/nightly_set.py command

.github/workflows/nightly.yml

@@ -1,90 +0,0 @@
-name: nightly audit
-# Every vanilla harness, from scratch, on main, at 03:00 Paris time on the Mac mini's runner (it holds the
-# maintainer's own Minecraft files). The resources are prepared again first when the preparer or its exporters
-# changed (tools/ci/vanilla-data.sh). A harness that passed in the previous audit and fails now gets an issue
-# labelled parity-regression (one per harness); its issue closes when it passes again
-# (tools/ci/parity_issues.py). The bugs session picks those up. See docs/release-flow.md.
-#   gh workflow run "nightly audit"                    # now
-#   gh workflow run "nightly audit" -f dry_run=true    # the audit, without touching issues
-on:
-  schedule:
-    # GitHub's schedules are in UTC: both, and the first step keeps the one that is 03:07 in Paris today.
-    - cron: '7 1 * * *'
-    - cron: '7 2 * * *'
-  workflow_dispatch:
-    inputs:
-      dry_run:
-        description: Run the audit, but only print what it would do with issues
-        type: boolean
-        default: false
-permissions:
-  contents: read
-  issues: write
-concurrency:
-  group: nightly-audit
-  cancel-in-progress: false
-env:
-  # Test runs never reach the telemetry server: no live-count ping, no uploads (docs/telemetry.md).
-  HORIZON_TELEMETRY_URL: "off"
-
-jobs:
-  audit:
-    # The Mac mini's runners only: the audit compares with the previous one, so it stays on one platform.
-    runs-on: [self-hosted, horizon-game, macOS]
-    timeout-minutes: 240  # every harness (~80 min) plus lan_integration (~40 min an attempt under load, retried)
-    steps:
-      - name: 03:07 in Paris
-        id: when
-        env:
-          SCHEDULE: ${{ github.event.schedule }}
-        run: |
-          # Which cron is 03:07 in Paris, from Paris's offset today: GitHub can start a schedule hours late, so the
-          # clock at start time can't tell (on 2026-10-26 both started after 04:00 Paris and both skipped).
-          offset=$(TZ=Europe/Paris date +%z)
-          ours=$([ "$offset" = +0200 ] && echo '7 1 * * *' || echo '7 2 * * *')
-          if [[ "${{ github.event_name }}" == schedule && "$SCHEDULE" != "$ours" ]]; then
-            echo "Paris is at UTC${offset} today: the '$ours' schedule runs the audit."
-            echo "run=false" >> "$GITHUB_OUTPUT"
-          else
-            echo "run=true" >> "$GITHUB_OUTPUT"
-          fi
-      - uses: actions/checkout@v7
-        if: steps.when.outputs.run == 'true'
-        with:
-          fetch-depth: 0
-          persist-credentials: false
-          # Keeps .local/ (parity state, probe builds, the previous audit) and target/.
-          clean: false
-      - uses: dtolnay/rust-toolchain@stable
-        if: steps.when.outputs.run == 'true'
-      - name: Tools from the runner
-        if: steps.when.outputs.run == 'true'
-        run: bash tools/ci/runner-env.sh
-      - name: Vanilla data, prepared again if the preparer changed
-        if: steps.when.outputs.run == 'true'
-        run: bash tools/ci/vanilla-data.sh
-      - name: Every harness
-        id: audit
-        if: steps.when.outputs.run == 'true'
-        env:
-          PARITY_HOSTS: ''
-        run: |
-          echo "since=$(date +%Y-%m-%dT%H:%M:%S)" >> "$GITHUB_OUTPUT"
-          set +e
-          # lan_integration (the whole lan_e2e suite) takes ~2,400 s under load, past the usual 1,800.
-          python3 tools/parity.py --all --timeout 3000 2>&1 | tee "$RUNNER_TEMP/audit.log"
-          echo "exit=${PIPESTATUS[0]}" >> "$GITHUB_OUTPUT"
-          { echo '```'; tail -40 "$RUNNER_TEMP/audit.log"; echo '```'; } >> "$GITHUB_STEP_SUMMARY"
-      - name: Issues for the harnesses that regressed
-        if: steps.when.outputs.run == 'true' && always() && steps.audit.outputs.since
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: python3 tools/ci/parity_issues.py --since "${{ steps.audit.outputs.since }}" ${{ inputs.dry_run && '--dry-run' || '' }} | tee -a "$GITHUB_STEP_SUMMARY"
-      - name: Logs of the failed harnesses
-        if: steps.when.outputs.run == 'true' && steps.audit.outputs.exit != '0'
-        uses: actions/upload-artifact@v7
-        with:
-          name: nightly-parity-logs
-          path: .local/parity-runner/logs/
-          if-no-files-found: ignore
-          retention-days: 7

.github/workflows/overlap-note.yml

@@ -1,43 +0,0 @@
-name: overlap note
-# One comment on a pull request naming the other open pull requests that close the same issue or change the same
-# functions, edited on every push (tools/ci/overlap_note.py, issue #3859).
-#
-# Why no pull request's code runs here, though `pull_request_target` gives a token that can write:
-# - `pull_request_target` runs this file and the script from main, never the pull request's copy.
-# - The checkout is main's (`ref: main`), blobless, with the script alone on disk. The pull requests' heads are fetched
-#   as git objects and only diffed, never checked out; git runs with hooks, fsmonitor, external diff and textconv off.
-# - The rest comes from the API. The token writes the comment only.
-on:
-  pull_request_target:
-    types: [opened, reopened, synchronize, ready_for_review]
-permissions:
-  contents: read
-jobs:
-  note:
-    if: github.event.pull_request.base.ref == 'main'
-    # A newer push replaces the note being computed.
-    concurrency:
-      group: overlap-note-${{ github.event.pull_request.number }}
-      cancel-in-progress: true
-    # One of our small runners (horizon-light), out of GitHub's pool: it runs main's script only (above), so a fork's
-    # pull request runs none of its code there (docs/ci-runners.md). SELF_HOSTED_CI=off: GitHub's runners.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
-    timeout-minutes: 10
-    permissions:
-      contents: read
-      pull-requests: write
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: main
-          fetch-depth: 0
-          filter: blob:none
-          persist-credentials: false
-          sparse-checkout: |
-            tools/ci/overlap_note.py
-          sparse-checkout-cone-mode: false
-      - name: Note
-        env:
-          GH_TOKEN: ${{ github.token }}
-          REPO: ${{ github.repository }}
-        run: python3 tools/ci/overlap_note.py event

.github/workflows/pack-bench.yml

@@ -1,72 +0,0 @@
-name: pack load bench
-# How long resource packs take to load: crates/horizon-client-render/examples/pack_load_bench.rs on generated packs
-# (no game files), on the branch and then on `base` with the branch's copy of the bench, on the same runner, so a pull
-# request can show its numbers next to main's. Started by hand, or by a push to a `pack-bench/*` branch (a fork can't
-# start a workflow its main lacks), against horizon-rust/horizon's main.
-on:
-  push:
-    branches: ['pack-bench/**']
-  workflow_dispatch:
-    inputs:
-      base:
-        description: Ref to compare against
-        default: main
-      scale:
-        description: How many times the default pack sizes
-        default: '1'
-permissions:
-  contents: read
-env:
-  HORIZON_TELEMETRY_URL: "off"
-  CARGO_TERM_COLOR: never
-
-jobs:
-  bench:
-    # Our checks runners (label horizon-checks, docs/ci-runners.md): the branch and the base on the same machine, as
-    # the comparison needs. SELF_HOSTED_CI=light or off: GitHub's.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
-    timeout-minutes: 90
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-      - name: Install Rust and the ALSA and udev headers
-        env:
-          HOSTED: ${{ runner.environment == 'github-hosted' }}
-        run: |
-          if [ "$HOSTED" = true ]; then
-            sudo apt-get update && sudo apt-get install -y --no-install-recommends libasound2-dev libudev-dev
-          fi
-          rustup toolchain install stable --profile minimal
-      - uses: Swatinem/rust-cache@v2
-        if: runner.environment == 'github-hosted'
-        with:
-          shared-key: pack-bench
-      - name: Bench the branch
-        env:
-          SCALE: ${{ inputs.scale || '1' }}
-        run: |
-          cargo run --profile fast -p horizon-client-render --example pack_load_bench -- --scale "$SCALE" > head.md
-      - name: Bench the base, with the branch's bench
-        env:
-          BASE: ${{ inputs.base || 'main' }}
-          SCALE: ${{ inputs.scale || '1' }}
-        run: |
-          git fetch https://github.com/horizon-rust/horizon.git "$BASE"
-          # Our runners keep the folder beside the checkout between jobs.
-          git worktree remove --force ../base 2> /dev/null || rm -rf ../base
-          git worktree prune
-          git worktree add ../base FETCH_HEAD
-          cp crates/horizon-client-render/examples/pack_load_bench.rs ../base/crates/horizon-client-render/examples/
-          # A bench row that times a function the base lacks keeps it from building there: then
-          # the branch's own rows compare the two ways.
-          target=${CARGO_TARGET_DIR:-$GITHUB_WORKSPACE/target}
-          (cd ../base && CARGO_TARGET_DIR="$target" cargo run --profile fast -p horizon-client-render \
-            --example pack_load_bench -- --scale "$SCALE") > base.md \
-            || echo "The bench does not build on the base." > base.md
-      - name: Summary
-        run: |
-          {
-            echo "### Branch ($(git rev-parse --short HEAD))"; cat head.md
-            echo; echo "### Base (${{ inputs.base || 'main' }})"; cat base.md
-          } | tee -a "$GITHUB_STEP_SUMMARY"

.github/workflows/parity-main.yml

@@ -1,77 +0,0 @@
-name: parity-main
-# The vanilla harnesses on main, a batch of merges at a time (docs/release-flow.md#parity-on-main), on the Mac mini's
-# runner. One run at a time: merges that land while a run goes on wait in one pending run (GitHub keeps only the
-# newest), which checks every merge since main's last green parity-main (tools/parity_main.py base). On a failure it
-# bisects the failing harnesses over those merges and comments on the pull request that broke them. Releases ship
-# only a commit whose parity-main passed (tools/release_train.py), so nothing a harness catches reaches players.
-on:
-  push:
-    branches: [main]
-  workflow_dispatch:
-permissions:
-  contents: read
-  # The comment on the merge that broke a harness.
-  pull-requests: write
-  # tools/parity_main.py base reads earlier runs.
-  actions: read
-concurrency:
-  group: parity-main
-  cancel-in-progress: false
-env:
-  # Test runs never reach the telemetry server: no live-count ping, no uploads (docs/telemetry.md).
-  HORIZON_TELEMETRY_URL: "off"
-
-jobs:
-  parity-main:
-    # A Mac mini runner of its own (ludovics-mac-mini-2 holds only this label since 2026-10-26): behind PR parity jobs
-    # this run waited 2 h while every merge replaced the pending one, and on the release runner a release then waited
-    # behind the next run. PR parity jobs have ludovics-mac-mini and playhorizon. Not playhorizon: its 4 CPUs
-    # make a core-crate run several times longer, and a failure here bisects and comments on merges.
-    runs-on: [self-hosted, macOS, horizon-parity-main]
-    timeout-minutes: 240  # a core-crate batch reruns ~300 harnesses (~60-90 min), a bisect a few rounds of the failures
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: ${{ github.sha }}
-          fetch-depth: 0
-          persist-credentials: false
-          # Keeps .local/ (parity state, probe builds, oracle results) and target/ between runs.
-          clean: false
-      - uses: dtolnay/rust-toolchain@stable
-      - name: Tools from the runner
-        run: bash tools/ci/runner-env.sh
-      - name: Vanilla data, and resources prepared by this preparer
-        run: bash tools/ci/vanilla-data.sh
-      - name: Main's last green parity-main
-        id: base
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: echo "sha=$(python3 tools/parity_main.py base)" >> "$GITHUB_OUTPUT"
-      - name: The harnesses the merges since then can affect
-        id: harnesses
-        # A failure here is judged by the next step: the run passes when every failed harness passes again at HEAD.
-        continue-on-error: true
-        env:
-          PARITY_HOSTS: ''
-          BASE_SHA: ${{ steps.base.outputs.sha }}
-        run: |
-          echo "Merges since ${BASE_SHA}:"
-          git log --first-parent --format='  %h %s' "$BASE_SHA..HEAD"
-          python3 tools/parity.py --changed "$BASE_SHA" --timeout 2400
-      - name: A flake, or the merge that broke them
-        if: steps.harnesses.outcome == 'failure'
-        env:
-          GH_TOKEN: ${{ github.token }}
-          PARITY_HOSTS: ''
-          BASE_SHA: ${{ steps.base.outputs.sha }}
-        run: |
-          rm -rf .local/parity-main-logs && cp -R .local/parity-runner/logs .local/parity-main-logs 2>/dev/null || true
-          python3 tools/parity_main.py bisect "$BASE_SHA" --comment
-      - name: Logs of the failed harnesses
-        if: steps.harnesses.outcome == 'failure'
-        uses: actions/upload-artifact@v7
-        with:
-          name: parity-main-logs
-          path: .local/parity-main-logs/
-          if-no-files-found: ignore
-          retention-days: 7

.github/workflows/parity.yml

@@ -1,109 +0,0 @@
-name: parity
-# The vanilla harnesses a pull request's changes can affect, on the Mac mini's runner or playhorizon's, which hold the
-# maintainer's own Minecraft files (Horizon never downloads the game). Called by ci.yml for pull requests from this repository
-# and by run-parity.yml when a maintainer labels a fork's pull request run-parity. See docs/release-flow.md.
-on:
-  workflow_call:
-    inputs:
-      base:
-        description: The pull request's base commit (the harnesses its changes since then can affect)
-        type: string
-        required: true
-      head:
-        description: The commit to check out and test
-        type: string
-        required: true
-      full:
-        description: >-
-          The pull request carries the full-parity label (a change every harness reaches, such as a crate split): it
-          runs on playhorizon's runner only, so the Mac mini's runners stay free for the others. While that runner is
-          busy the job waits for it.
-        type: boolean
-        default: false
-      frame_identity:
-        description: >-
-          The pull request carries the frame-identity label: it must leave the picture alone (HDR, shader packs), so
-          the frame_identity harness, which no automatic selection picks, runs too.
-        type: boolean
-        default: false
-permissions:
-  contents: read
-env:
-  # Test runs never reach the telemetry server: no live-count ping, no uploads (docs/telemetry.md).
-  HORIZON_TELEMETRY_URL: "off"
-
-jobs:
-  parity:
-    runs-on: ${{ inputs.full && fromJSON('["self-hosted", "horizon-game", "playhorizon"]') || fromJSON('["self-hosted", "horizon-game"]') }}
-    # A change to core crates reruns ~350 harnesses: ~60-90 min on the Mac mini; on playhorizon (4 of its 8 vCPUs, 4
-    # harnesses at a time) up to a few hours, and any pull request's job may land there.
-    timeout-minutes: ${{ inputs.full && 360 || 180 }}
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          # The commit the event names: a fork's later pushes need another run-parity label. The next step merges
-          # main into it.
-          ref: ${{ inputs.head }}
-          fetch-depth: 0
-          persist-credentials: false
-          # Keeps .local/ (parity state, probe builds, oracle results) and target/ between runs.
-          clean: false
-      - name: The head merged into main (what merging it would land)
-        id: merge
-        env:
-          BASE_SHA: ${{ inputs.base }}
-          HEAD_SHA: ${{ inputs.head }}
-        run: |
-          # Harness fixes and game fixes that reached main since the branch was made then apply here too: a head
-          # tested alone failed harnesses already fixed on main (server_knockback before #2114, mob_ai's heap before
-          # #2270, save_roundtrip before #2212). Selection then compares with this main, so it sees only the pull
-          # request's own changes. A head that conflicts with main is tested alone.
-          set -euo pipefail
-          git merge --abort 2>/dev/null || true
-          git fetch -q --no-tags origin +refs/heads/main:refs/remotes/origin/main
-          main=$(git rev-parse origin/main)
-          if git -c user.name=parity -c user.email=parity@localhost merge -q --no-edit --no-ff "$main" >/dev/null 2>&1; then
-            echo "base=$main" >> "$GITHUB_OUTPUT"
-            echo "Tested: head ${HEAD_SHA:0:9} merged into main ${main:0:9}" | tee -a "$GITHUB_STEP_SUMMARY"
-          else
-            git merge --abort
-            echo "base=$BASE_SHA" >> "$GITHUB_OUTPUT"
-            echo "::warning::head ${HEAD_SHA:0:9} conflicts with main ${main:0:9}: tested alone, without main's fixes"
-            echo "Tested: head ${HEAD_SHA:0:9} alone (it conflicts with main ${main:0:9})" | tee -a "$GITHUB_STEP_SUMMARY"
-          fi
-      - uses: dtolnay/rust-toolchain@stable
-      - name: Tools from the runner
-        run: bash tools/ci/runner-env.sh
-      - name: Vanilla data, and resources prepared by this preparer
-        run: bash tools/ci/vanilla-data.sh
-      - name: The prepared output is the one the preparer's OUTPUT_VERSION says
-        env:
-          BASE_SHA: ${{ steps.merge.outputs.base }}
-        run: |
-          # A head made before OUTPUT_VERSION (#1947) that conflicts with main has neither the tool nor the number.
-          if [ ! -f tools/prepare_output.py ] || ! grep -q OUTPUT_VERSION crates/horizon-prepare/src/lib.rs; then
-            echo "This head's preparer has no OUTPUT_VERSION: nothing to check"
-            exit 0
-          fi
-          python3 tools/prepare_output.py check --cache --base "$BASE_SHA"
-      - name: The version constants are the pinned jar's
-        run: python3 tools/gen_version_consts.py --check
-      - name: The harnesses this change can affect
-        env:
-          PARITY_HOSTS: ''
-          BASE_SHA: ${{ steps.merge.outputs.base }}
-        run: python3 tools/parity.py --changed "$BASE_SHA" --timeout 2400  # world_spawn takes ~1480 s on a busy runner
-      - name: The pictures this change must leave alone
-        if: ${{ !cancelled() && inputs.frame_identity }}
-        env:
-          PARITY_HOSTS: ''
-          BASE_SHA: ${{ steps.merge.outputs.base }}
-        run: python3 tools/parity.py frame_identity --timeout 2400
-      - name: Logs of the failed harnesses
-        if: failure()
-        uses: actions/upload-artifact@v7
-        with:
-          name: parity-logs
-          path: .local/parity-runner/logs/
-          if-no-files-found: ignore
-          retention-days: 3

.github/workflows/pr-labels.yml

@@ -1,38 +0,0 @@
-name: pr labels
-# A pull request's kind label (the box ticked in the template) and area labels (the paths it changes):
-# tools/ci/pr_labels.py, CONTRIBUTING.md "Pull requests".
-#
-# Why no pull request's code runs here, though `pull_request_target` gives a token that can write to fork PRs:
-# - `pull_request_target` runs this file and the script from main, never the pull request's copy.
-# - It checks out main's script only (`ref: main`), never the pull request's head or merge commit.
-# - The script reads the event file (the description is data in JSON, never in a shell line) and the API's list of
-#   changed file names; it runs, builds and imports nothing of theirs. The token writes labels only.
-on:
-  pull_request_target:
-    types: [opened, reopened, synchronize, edited, ready_for_review]
-permissions:
-  contents: read
-jobs:
-  label:
-    # Title-only edits change nothing: skip them before a runner starts.
-    if: github.event.action != 'edited' || github.event.changes.body != null
-    # One of our small runners (horizon-light), out of GitHub's pool: it runs main's script only (above), so a fork's
-    # pull request runs none of its code there (docs/ci-runners.md). SELF_HOSTED_CI=off: GitHub's runners.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
-    timeout-minutes: 5
-    permissions:
-      contents: read
-      pull-requests: write
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: main
-          persist-credentials: false
-          sparse-checkout: |
-            tools/ci/pr_labels.py
-          sparse-checkout-cone-mode: false
-      - name: Label
-        env:
-          GH_TOKEN: ${{ github.token }}
-          REPO: ${{ github.repository }}
-        run: python3 tools/ci/pr_labels.py event

.github/workflows/release.yml

@@ -1,90 +0,0 @@
-name: release
-# Automatic game releases (docs/release-flow.md). Horizon ships only the Nightly since 2026-10-28 (Ludovic): this
-# workflow is the batch train that decides when a new Nightly goes out, and `nightly build` (nightly-build.yml) builds,
-# signs and publishes it. After every green `checks` run on main, every 10 minutes (so a batch waiting for merges to
-# settle goes out without another merge) and by hand, tools/release_train.py decides, for a commit whose checks and
-# parity-main (the vanilla harnesses on main) both passed: a Nightly when 5 pull requests merged since the published
-# Nightly changed what players run and the newest merged 5 minutes ago, or when the oldest has waited 6 hours, or at
-# once for a pull request labelled release-now. RELEASES_PAUSED=1 (repository variable) stops it; so does an open issue
-# labelled release-blocker, forced runs too (nightly-build.yml checks again before publishing). One Nightly build at a
-# time, at most 12 a day (release-now and force=true pass the cap). No `vX.Y.Z` game release is made any more.
-#   gh workflow run release --ref <branch>                       # dry run: decides, starts nothing
-#   gh workflow run release -f dry_run=false -f force=true       # on main: a Nightly now, whatever the rules say
-on:
-  workflow_run:
-    # A game release ships a commit both passed on (parity-main runs on batches: the newest commit it passed on).
-    workflows: [checks, parity-main]
-    types: [completed]
-    branches: [main]
-  schedule:
-    - cron: '2-59/10 * * * *'
-  workflow_dispatch:
-    inputs:
-      dry_run:
-        description: Decide only; start no Nightly build
-        type: boolean
-        default: true
-      force:
-        description: A Nightly even without player-facing changes, before merges settle, while paused or past the day's cap
-        type: boolean
-        default: false
-permissions:
-  contents: read
-  # The open release-blocker issues (decide).
-  issues: read
-  # The checks, parity-main and nightly build runs (decide).
-  actions: read
-concurrency:
-  # One release at a time. A hand-started dry run publishes nothing, so it can't race a real release: it gets a
-  # group of its own. In the shared group, a release queued behind it replaced it as the pending run and GitHub
-  # cancelled it (#2779's dry run, 2026-10-27), which happens all day while releases go out in batches.
-  group: game-release${{ github.event_name == 'workflow_dispatch' && inputs.dry_run && '-dry-run' || '' }}
-  cancel-in-progress: false
-jobs:
-  decide:
-    if: >-
-      github.event_name != 'workflow_run' ||
-      (github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.event == 'push')
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    outputs:
-      release: ${{ steps.decide.outputs.release }}
-      head: ${{ steps.decide.outputs.head }}
-      urgent: ${{ steps.decide.outputs.urgent }}
-      dry_run: ${{ steps.mode.outputs.dry_run }}
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-      - id: mode
-        # A dry run never publishes; a hand-started run off main is always one.
-        run: echo "dry_run=${{ github.event_name == 'workflow_dispatch' && (inputs.dry_run || github.ref != 'refs/heads/main') }}" >> "$GITHUB_OUTPUT"
-      - id: decide
-        env:
-          GH_TOKEN: ${{ github.token }}
-          RELEASES_PAUSED: ${{ vars.RELEASES_PAUSED }}
-          # The commit whose checks or parity-main just passed; a dry run builds the branch it was started on;
-          # otherwise main's newest commit with green checks and parity-main.
-          HEAD_SHA: ${{ github.event.workflow_run.head_sha || (steps.mode.outputs.dry_run == 'true' && github.sha) || '' }}
-          FORCE: ${{ inputs.force && 'yes' || '' }}
-        run: |
-          python3 tools/release_train.py decide --kind game ${HEAD_SHA:+--head "$HEAD_SHA"} ${FORCE:+--force} | tee decision.json
-          echo "### $(jq -r '.reason' decision.json)" >> "$GITHUB_STEP_SUMMARY"
-
-  nightly:
-    # The Nightly is the release: nightly-build.yml builds the decided commit plus the reviewers' picks, signs it for
-    # the Nightly channel and publishes it once its smoke test passed and no release-blocker is open.
-    needs: decide
-    if: needs.decide.outputs.release == 'true' && needs.decide.outputs.dry_run != 'true'
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    permissions:
-      actions: write  # starts `nightly build`
-    steps:
-      - env:
-          GH_TOKEN: ${{ github.token }}
-          HEAD_SHA: ${{ needs.decide.outputs.head }}
-          URGENT: ${{ needs.decide.outputs.urgent }}
-        run: |
-          gh workflow run nightly-build.yml --repo "$GITHUB_REPOSITORY" --ref main -f base="$HEAD_SHA" -f urgent="$URGENT"
-          echo "### Started \`nightly build\` on ${HEAD_SHA:0:9}" >> "$GITHUB_STEP_SUMMARY"

.github/workflows/run-parity.yml

@@ -1,30 +0,0 @@
-name: run-parity
-# A fork's pull request runs the parity job (parity.yml) on the Mac mini only when a maintainer who has read the
-# change adds the run-parity label: once, on the commit the pull request has then. Remove the label and add it
-# again after new pushes. A separate workflow, so that labels never start `checks`: there a label's run reported a
-# skipped `verify`, and GitHub counts a skipped required check as passed.
-on:
-  pull_request:
-    # A push starts a run only to cancel the old head's (see concurrency): the job runs on the label alone.
-    types: [labeled, synchronize]
-permissions:
-  contents: read
-concurrency:
-  # The run-parity label and pushes share one group per pull request, so the newest run cancels the one before: a
-  # pushed pull request's run tested a head the merge would no longer land. Any other label gets a group of its own:
-  # in the shared one, adding needs-proof cancelled the parity run queued seconds before (run 40766180150).
-  group: run-parity-${{ github.event.pull_request.number }}${{ github.event.action == 'labeled' && github.event.label.name != 'run-parity' && format('-{0}', github.run_id) || '' }}
-  cancel-in-progress: true
-env:
-  # Test runs never reach the telemetry server: no live-count ping, no uploads (docs/telemetry.md).
-  HORIZON_TELEMETRY_URL: "off"
-
-jobs:
-  parity:
-    if: github.event.label.name == 'run-parity'
-    uses: ./.github/workflows/parity.yml
-    with:
-      base: ${{ github.event.pull_request.base.sha }}
-      head: ${{ github.event.pull_request.head.sha }}
-      full: ${{ contains(github.event.pull_request.labels.*.name, 'full-parity') }}
-      frame_identity: ${{ contains(github.event.pull_request.labels.*.name, 'frame-identity') }}

.github/workflows/telemetry-server.yml

@@ -1,40 +0,0 @@
-name: telemetry-server
-# The ingest server is its own workspace (crates/horizon-telemetry-server), so the checks job doesn't build
-# it: this one does, when it or the crate it shares with the launcher and the game changes.
-on:
-  push:
-    branches: [main]
-    paths:
-      - 'crates/horizon-telemetry/**'
-      - 'crates/horizon-telemetry-server/**'
-      - '.github/workflows/telemetry-server.yml'
-  pull_request:
-    paths:
-      - 'crates/horizon-telemetry/**'
-      - 'crates/horizon-telemetry-server/**'
-      - '.github/workflows/telemetry-server.yml'
-permissions:
-  contents: read
-concurrency:
-  group: telemetry-server-${{ github.event.pull_request.number || github.sha }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
-jobs:
-  check:
-    # Our checks runners (label horizon-checks, docs/ci-runners.md); SELF_HOSTED_CI=light or off: GitHub's.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && vars.SELF_HOSTED_CI != 'light' && fromJSON('["self-hosted", "linux", "horizon-checks"]') || 'ubuntu-latest' }}
-    timeout-minutes: 20
-    defaults:
-      run:
-        working-directory: crates/horizon-telemetry-server
-    steps:
-      - uses: actions/checkout@v7
-      - run: rustup toolchain install stable --profile minimal --component rustfmt --component clippy
-      # Ours keep their build folder between jobs.
-      - uses: Swatinem/rust-cache@v2
-        if: runner.environment == 'github-hosted'
-        with:
-          workspaces: crates/horizon-telemetry-server
-          save-if: ${{ github.ref == 'refs/heads/main' }}
-      - run: cargo +stable fmt --check
-      - run: cargo +stable clippy --all-targets --locked -- -D warnings
-      - run: cargo +stable test --locked

.github/workflows/triage-command.yml

@@ -1,51 +0,0 @@
-name: triage command
-# `/close`, `/reopen`, `/label`, `/unlabel` comments: the trusted reviewers in .github/trusted-reviewers.txt (and
-# Ludovic) triage issues and pull requests without any repository role (docs/release-flow.md "Trusted reviewers",
-# tools/ci/triage_command.py).
-#
-# Why no pull request's code runs here, though the token can write:
-# - `issue_comment` always runs this file from main, whoever comments and wherever.
-# - It checks out main's script and list only, never a pull request; it reads threads through the API.
-# - The comment's text and author reach the script as env vars, never in a shell line. The token stays in the step.
-on:
-  issue_comment:
-    types: [created]
-permissions:
-  contents: read
-jobs:
-  command:
-    # Every other comment skips here, before a runner starts.
-    if: >-
-      github.event.comment.user.type != 'Bot' && (
-      startsWith(github.event.comment.body, '/close') ||
-      startsWith(github.event.comment.body, '/reopen') ||
-      startsWith(github.event.comment.body, '/label') ||
-      startsWith(github.event.comment.body, '/unlabel'))
-    # One of our small runners (label horizon-light, docs/ci-runners.md): main's script only, as above.
-    runs-on: ${{ vars.SELF_HOSTED_CI != 'off' && fromJSON('["self-hosted", "linux", "horizon-light"]') || 'ubuntu-latest' }}
-    timeout-minutes: 5
-    permissions:
-      contents: read
-      issues: write
-      pull-requests: write
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: main
-          persist-credentials: false
-          sparse-checkout: |
-            .github/trusted-reviewers.txt
-            tools/ci/nightly_set.py
-            tools/ci/triage_command.py
-          sparse-checkout-cone-mode: false
-      - name: Run the command
-        env:
-          GH_TOKEN: ${{ github.token }}
-          BODY: ${{ github.event.comment.body }}
-          AUTHOR: ${{ github.event.comment.user.login }}
-          # Who may act is decided by this numeric ID: a login can be claimed by someone else after a rename.
-          AUTHOR_ID: ${{ github.event.comment.user.id }}
-          ISSUE: ${{ github.event.issue.number }}
-          REPO: ${{ github.repository }}
-          COMMENT_URL: ${{ github.event.comment.html_url }}
-        run: python3 tools/ci/triage_command.py command

.gitignore

@@ -1,37 +0,0 @@
-/.local/
-/target/
-**/__pycache__/
-*.py[cod]
-/.venv/
-# Downloaded/decompiled game content and private profiling artifacts.
-*.jar
-*.class
-*.jfr
-*.hprof
-/decompiled/
-/minecraft/
-/assets/
-/run/
-/logs/
-/dist/
-/mods/horizon/build/
-/saves/
-/backups/
-/tools/logs/
-.DS_Store
-# What the client writes to its working directory when run from the repo root.
-/options.txt
-/debug-profile.json
-/horizon.txt
-/horizon-graphics.txt
-/horizon-controller.txt
-/horizon-extras.txt
-/horizon-player.txt
-/servers.dat
-/screenshots/
-/.horizon-cache/
-/crash-reports/
-/debug/
-
-# Release-only compiled original exporter bundle.
-/exporters/

AGENTS.md

@@ -1,218 +0,0 @@
-# Horizon: a map for agents
-
-Minecraft: Java Edition 26.3 rewritten in Rust (wgpu). Vanilla is the specification wherever it has the
-feature. Read [CONTRIBUTING.md](CONTRIBUTING.md) once; this page tells you where things are.
-Feature → files → harness for the most-changed areas: [docs/architecture.md](docs/architecture.md).
-
-## Rules that bite
-
-- **Never commit Mojang's files**: game jars, assets, decompiled source, prepared resources (`.local/`).
-  `tools/check_public_tree.py` rejects them; `git config core.hooksPath .githooks` runs it on commit.
-- **Keep your runs away from real player data.** Any game or launcher you start gets fresh `mktemp -d`
-  folders in `HORIZON_HOME` (logs, crash reports, telemetry consent, recordings; not saves), `HORIZON_LAUNCHER_HOME`, `XDG_DATA_HOME` and
-  `XDG_CONFIG_HOME`, plus `HORIZON_LAUNCHER_NO_SELF_UPDATE=1` and `HORIZON_NO_AUDIO=1`. Saves, `options.txt` and
-  caches go in the game folder, by default the working directory: start the game from a scratch folder with
-  `--game-dir` pointing at it, or they land in the repo root, hidden by `.gitignore`. For the
-  launcher, `HORIZON_LAUNCHER_TRASH`, `HORIZON_LAUNCHER_CLIPBOARD` and `HORIZON_LAUNCHER_DESKTOP` pointing into the scratch home. Never write to
-  `~/.local/share/{applications,horizon,horizon-launcher}` or `~/.local/bin`.
-- **Mark what an agent posts.** A PR body starts with a line naming the person whose agent opened it and
-  the tool: `> 🤖 Opened by <login>'s AI agent (<tool, model>), not by <login> personally.`, where `<login>`
-  is the GitHub account the PR is opened from (`gh api user --jq .login`). Issues say "Filed by", reviews
-  "Review by". Every comment starts with `🤖 Agent:`. Write only as the person you work for: the lines on
-  this page that name Ludovic are for his own agents (account `ludovic111`), never for anyone else's.
-- **Attribution.** Commits end with a `Co-Authored-By:` line for the agent that wrote them, and PR bodies
-  with that agent's own "Generated with" line. Example, Ludovic's agents (Claude Code on `ludovic111`):
-  first line `> 🤖 Opened by Ludovic's AI agent (Claude), not by Ludovic himself.`, commits
-  `Co-Authored-By: Claude <model> <[email protected]>`, last line
-  `🤖 Generated with [Claude Code](https://claude.com/claude-code)`.
-- Everything players run is Rust. Python/Java only for dev tools and harness drivers in `tools/`.
-- Horizon-only features follow [docs/design-system.md](docs/design-system.md) and are off by default where
-  they would change the vanilla look.
-- Small PRs (< ~500 lines). Labels: `feature` (players get something new), `skip-release` (they see no
-  change), none for a fix. Agents never add `release-now`: the maintainer decides it. Merges ship in batches of 5, or after
-  6 hours ([docs/release-flow.md](docs/release-flow.md)).
-- Contributors first: `gh pr list --state open --search <area>` before you start; never duplicate theirs.
-- **No hardcoded user-facing strings.** Keep UI translation-ready from the start. In the launcher (`launcher/`), wrap visible text with `tr("...")` or `trf("... {arg} ...", &[("arg", &val)])` from `crate::i18n` instead of raw string literals or `format!`. In the game, use translation keys (`Text::tr`, `lang::get`), never hardcoded English strings.
-- **Claim before you start**: comment `/claim` on the issue (no issue yet: open one, then claim it). An assigned
-  issue is taken, and so is one labelled `in progress` (claimed on Discord): pick another. `/unclaim` when you stop;
-  a claim with no open PR linking it is released after 5 days. The issues free to claim, without reading threads:
-  `gh issue list --search 'is:open no:assignee -label:"in progress" -label:tracker -label:proposal -label:"not claimable" -linked:pr'`
-- **Controllers reach what registers.** Draw controls with a registering helper (`ui::button`, `settings_shell::foot_button`); `graphics_style::button` and `screen_draw::button` only paint, and registering one part of a screen ends its crosshair, so register all of it.
-
-## Crates
-
-Game workspace (root `Cargo.toml`); `launcher/` and `crates/horizon-telemetry-server` are separate workspaces.
-
-| Crate | Owns |
-|---|---|
-| `horizon-client` | Gameplay library (`src/lib.rs`: `game.rs` + `game/`, `entry.rs`) and thin executable (`src/main.rs`). Also the dedicated server (`--dedicated`). Re-exports `horizon-client-lib` for existing mod paths. |
-| `horizon-client-lib` | Reusable client systems, `horizon-ctl`, probes and their tests. Its manifest points to the existing sources under `crates/horizon-client/`; the library root is `src/client_lib.rs`. It never depends on gameplay. |
-| `horizon-items` | Blocks and items below gameplay: `blocks.rs` (block facts), `items.rs`, `item_data.rs` (components), `enchant.rs`, `cooldowns.rs`, `bundle.rs`, `item_nbt.rs`. Re-exported as `horizon_client::items`... |
-| `horizon-command` | Command parsing (Brigadier): the vanilla tree, argument types, selectors, suggestions, the tree's network form. Re-exported as `horizon_client::command` |
-| `horizon-client-core` | The client lib's bottom layer: `text.rs`, `lang.rs`, `snbt.rs`, `nbt_path.rs`, `component.rs`, `scoreboard.rs`, `bossbar.rs`, `gamerules.rs`, `block_entity_nbt.rs`, registry/particle/sound tables. Re-exported under the old paths (`horizon_client::text`...) |
-| `horizon-client-input` | Key bindings and key names, toggle keys, mouse options, controller settings and glyphs, the clipboard, window options (`keybinds.rs`, `gamepad.rs`, `mouse.rs`, `window.rs`...). Re-exported under the old paths |
-| `horizon-client-render` | The client's world data, rendering and screens (chunks, meshing, light, streaming, `gfx`, HUD, menus, settings): ~80 modules that horizon-client re-exports under the same paths. Nothing in it reaches gameplay |
-| `horizon-world` | Vanilla world data with no gameplay loop: NBT, regions, chunks, `datafix/`, `worldgen/`, `level/` (server-side block behaviour, ticks, redstone), entity physics, items, effects, food, damage |
-| `horizon-core` | Simulation primitives: Java `Random`s, `jmath` (HotSpot-exact `Math`), positions, noise, density, paletted storage, `version.rs` (the pinned version) |
-| `horizon-protocol` | Network protocol 777: codecs, framing, encryption, `packets/{handshake,status,login,configuration,play}.rs`, `entity_data.rs` |
-| `horizon-assets` | Resource decoding: block-state and item models, baking, atlases |
-| `horizon-prepare` | Builds `.local/horizon-client/26.3` from the player's own Minecraft install (runs the Java exporters) |
-| `horizon-server` | `horizon-server`: `server.toml`, CLI, supervisor of the headless game ([docs/hosting.md](docs/hosting.md)) |
-| `horizon-server-files` | `server.properties`, eula, ops/whitelist/bans, usercache |
-| `horizon-anticheat` | The dedicated server's anticheat, off by default: `[anticheat]` settings, violation levels, the checks' rules; the hub runs them (`lan/anticheat.rs`) ([docs/anticheat.md](docs/anticheat.md)) |
-| `horizon-cosmetics` | Cosmetic items Horizon clients draw on players (off by default): the item format, bones and animations ([docs/cosmetics.md](docs/cosmetics.md)) |
-| `horizon-friends`, `horizon-relay` | Play with Friends: invite codes, encrypted tunnel, the relay ([docs/play-with-friends.md](docs/play-with-friends.md)) |
-| `horizon-mods`, `cargo-horizon-mod` | Content mods (`.hmod`: manifest, content fence, no code), the registry index and `.hpack`, and `cargo horizon-mod` (`new`, `build`, `run`, `check`, `registry`) ([docs/mods.md](docs/mods.md)). Code mods are native, built by the launcher ([docs/native-mods.md](docs/native-mods.md)) |
-| `horizon-port-pack` | Porting Java modpacks ([docs/modpacks.md](docs/modpacks.md)) |
-| `horizon-optifine` | OptiFine-format pack files below every feature that reads them: `.properties`, the name/range/block matchers, paths and `optifine/` folders, and custom entity models (`cem/`: `.jem`/`.jpm` parsing and baking) |
-| `horizon-shader-api` | Horizon's own WGSL shader packs ([docs/api/shaders.md](docs/api/shaders.md)): `horizon-shaders.toml`, the `.hshader` package; shared by the game, the launcher and the registry |
-| `horizon-shaders` | Shader packs (the `shaders/` folder format), rebuilt clean-room from a written spec of the format; no wgpu |
-| `horizon-theme` | Design tokens and fonts for the launcher, the game's own menus and the website |
-| `horizon-telemetry`, `horizon-telemetry-server`, `horizon-bench` | Opt-in data collection, its ingest server, the benchmark report format |
-| `horizon-dualsense`, `horizon-threads`, `horizon-release-sign`, `horizon-bots`, `xtask` | DualSense output, thread priorities, signed release checksums, load-test bots, repo tasks |
-| `launcher/` | GPUI launcher: `main.rs` (UI), `backend.rs` (installs, updates), `cli.rs`, `mcp.rs`, `*_page.rs` |
-
-Other top-level folders: `tools/` (harnesses and dev scripts), `tests/` (Python unit tests: `python3 -m
-unittest discover -s tests`), `mods/horizon/src/test/java/dev/horizonlab/parity/` (Java oracles),
-`docs/`, `.github/workflows/`. The website (playhorizon.dev) is the private horizon-rust/horizon-site: its build
-reads `README.md`, `launcher/links.json`, `docs/api/`, `roadmap/roadmap.json` and `crates/horizon-theme/tokens.css` from main.
-
-## Write tests with signal
-
-- Test observable behavior, not words in docs, comments or source. Keep checks for machine-consumed contracts.
-- Use independent expected values or a vanilla oracle; do not derive the answer from the code under test.
-- Test outcomes, not only calls to stubs. Use mocks to isolate behavior, not as the behavior itself.
-- Skip tests of trivial constants, derives and getters, or behavior already covered by another test.
-- Avoid pinning implementation details; a harmless refactor should not break a behavior test.
-- Make slow tests faster without removing cases or weakening their coverage.
-- Never delete parity harnesses or tests that pin vanilla behaviour: they are the spec.
-
-## Build and test fast
-
-```sh
-python3 tools/pr_ready.py                  # the self-check: fmt, clippy -D warnings, touched crates' tests, harnesses; paste its block in the PR
-python3 tools/pr_ready.py --quick          # same without harnesses
-cargo test -p horizon-client -p horizon-client-lib --lib --bins --tests   # skips the 104 examples (pr_ready does this); `--doc` separately
-cargo test -p horizon-client-lib --lib mod_content::tests:: -- --ignored   # the 5 slow content-root tests, #[ignore]d; pr_ready runs them when mod content, assets, blocks or items change
-cargo build --profile fast -p horizon-client        # optimized, quick to link: use it to play or run lan_e2e
-python3 tools/parity.py --changed origin/main       # the harnesses your branch can affect (CI's parity job)
-python3 tools/parity.py --changed-files paths.txt --list   # which harnesses cover these files, without running them
-python3 tools/parity.py mob_ai sculk       # named harnesses
-python3 tools/lan_e2e.py --check chest     # two real games over LAN (server-thread host)
-python3 tools/agent_control_e2e.py         # horizon-ctl / MCP end to end
-```
-
-- Harnesses and the game need the vanilla data in `.local/` (`minecraft/`, `horizon-client/26.3`, `datagen/`,
-  `tools/`): see [docs/parity-workflow.md](docs/parity-workflow.md). Without it, pr_ready lists the
-  harnesses for CI.
-- A harness = `tools/test_<name>_parity.py` (324 of them) + a Java oracle (`mods/horizon/src/test/java/dev/horizonlab/parity/Vanilla*Oracle.java`)
-  + a Rust probe: `crates/<crate>/examples/<name>_{probe,fixture}.rs` (horizon-world 175, horizon-client 104),
-  or the game binary with a fixture env var (`game/dispense_fixture.rs`, `game/sculk_fixture.rs`,
-  `game/command_harness.rs`, `game/net_harness.rs`). Copy a nearby harness for a new one.
-- Developing a native mod? Run `horizon-launcher settings native-profile dev` once. `dev` builds the game crate
-  unoptimized: a mod edit rebuilds about 6× faster than with `performance`, while game logic runs up to about twice as
-  slow. Use it while developing, not for playing; `performance` stays the default for players and releases
-  ([docs/native-mods.md](docs/native-mods.md)).
-- Probes build into `.local/parity-target/`; harnesses find binaries via `lab.cargo_target()`, never `target/`.
-- Harness selection uses Cargo dep-info and reachable-code narrowing (`tools/parity_reach.py`).
-  `horizon-client-lib` builds the control tool and client probes without gameplay; their dep-info
-  excludes `game.rs` and `game/`, so gameplay edits do not rebuild or select those probes.
-  Source paths remain in `crates/horizon-client/`. Measure actual harness selection on refreshed
-  records with `tools/parity.py --changed-files paths.txt --list`; historical counts are not a guarantee.
-- Rust integration tests: `crates/horizon-client/tests/` (`lan_bot.rs`, `generation_saves.rs`, `streaming_meshes.rs`).
-- Linux needs `libasound2-dev libudev-dev`; `--no-default-features` drops audio and controllers (the server build).
-- Run and drive the game (starts the `horizon-client` beside `horizon-ctl`; other arguments go to the game):
-  `target/fast/horizon-ctl --socket $PWD/ctl.sock launch --world W --creative --offscreen --wait --resources $PWD/.local/horizon-client/26.3`,
-  then `horizon-ctl --socket … state|keys|turn|command|screenshot|quit`
-  ([docs/horizon-ctl-commands.md](docs/horizon-ctl-commands.md)).
-
-## Vanilla reference
-
-- Start parity work from the port ledger, not grep: `python3 tools/port_ledger.py issue N` (or `where
-  Class.method`, `what file:line`), and `check --base origin/main` before the PR. How:
-  [.claude/skills/vanilla-parity/SKILL.md](.claude/skills/vanilla-parity/SKILL.md), [docs/port-ledger.md](docs/port-ledger.md).
-- Decompiled sources: `.local/minecraft/26.3/sources/{client,server}/` (`python3 tools/lab.py decompile`).
-- Bytecode queries (callers through lambdas, every overload):
-  `python3 tools/rea_vanilla.py method net.minecraft.world.level.block.DispenserBlock dispenseFrom`
-  ([docs/decompilation-status.md](docs/decompilation-status.md)).
-- A harness runs the oracle against the real 26.3 jars and the Rust probe on the same inputs, then compares
-  their JSON. Oracle runs are cached by `tools/parity_shim.py`; `--fresh` reruns them.
-- Mirror vanilla's `Math` calls with `horizon_core::jmath`, and vanilla's RNG with `horizon_core::random`:
-  random draws must happen in vanilla's order.
-
-## horizon-client: where things live
-
-`L:` = lib (`crates/horizon-client/src/`, or `crates/horizon-client-render/src/` for the modules that crate holds, under
-the same `horizon_client::<module>` paths), `G:` = gameplay (`crates/horizon-client/src/game/`), also in the lib in normal builds.
-Gameplay keeps its `horizon_client::<module>` imports through a self-crate alias. The executable
-contains only the allocator, mod API marker and a call to `entry::main`. For unit tests, the lib
-excludes `entry` and `game`, and the executable test target owns `game` so its process-wide test
-state stays separate from the library tests. This compiles gameplay twice for executable tests.
-
-| Subsystem | Files |
-|---|---|
-| Game loop, tick, frame | `game.rs`: `fn run`, `impl ApplicationHandler for Game` (`window_event`, `about_to_wait`), `fn tick`, `fn tick_world`, `fn render`; L: `clock.rs`, `spans.rs`; `horizon-client-input/src/window.rs` |
-| Rendering | L: `gfx.rs` (`Renderer::new`, `Renderer::render`), `gfx/` (cull, occlusion, translucency, upload, timing, lod, weather, stars, end_sky), `*.wgsl`, `particles.rs`, `block_entity_render.rs`, `item_render.rs`, `fog.rs`, `clouds.rs`, `camera.rs`, `first_person.rs`; G: `render_tick.rs`, `item_draw.rs` |
-| Chunks, streaming, light | L: `streaming.rs` (worker pool: generate, light, mesh), `world.rs`, `chunk.rs`, `chunk_map.rs`, `light.rs`, `mesher.rs` + `mesher/`, `vanillagen.rs` (binds horizon-world's generator), `lod.rs` + `lod/`, `server_terrain.rs` (a server's kept chunks), `bluemap.rs` + `bluemap_detect.rs` (far terrain from its web map), `ticket_levels.rs`; G: `world_loading.rs`, `postprocess.rs`; game.rs `fn update_world` |
-| World generation | `crates/horizon-world/src/worldgen/` (`generator*.rs`, `feature_graph.rs`, `structure/`, `carver/`) |
-| Block behaviour | `crates/horizon-world/src/level/` (`mod.rs`, `tick.rs`, `hooks.rs`, `redstone.rs`, `place.rs`, `interact.rs`); game.rs `fn tick_blocks`, `fn process_level_events` |
-| Mobs | L: `mobs.rs` (types), `mobs/` (`ai.rs`, `goals.rs`, `brain.rs`, `*_brain.rs`, `nav.rs`, `path.rs`, `species.rs`, `spawning.rs`, `render.rs`, `anim.rs`); G: `creatures.rs` (ticking, spawning, mob events), one file per mob family (`dragon.rs`, `wither.rs`, `villagers.rs`, `piglins.rs`, `golems.rs`...), `natural_spawning.rs` |
-| Other entities | L: `entities.rs`, `projectiles.rs`, `arrows.rs`; G: `boats.rs`, `minecarts.rs`, `mounts.rs`, `armor_stands.rs`, `paintings.rs`, `frames.rs`, `fireworks.rs`, `tnt.rs`, `explosion.rs` |
-| Player actions | game.rs (`fn use_hand`, `fn use_item`, `fn attack`, `fn tick_mining`, `fn break_block`); G: `hand.rs`, `combat.rs`, `consume.rs`, `potions.rs`, `shield.rs`, `crossbow.rs`, `trident.rs`, `fishing.rs`; L: `motion.rs` + `motion/` (movement), `collisions.rs`; crate `horizon-items`: `items.rs`, `item_data.rs`, `enchant.rs`, `blocks.rs` |
-| Inventory and containers | L: `menu.rs` (`AbstractContainerMenu.clicked`), `container_screen.rs`, `containers.rs`, `creative.rs`, `crafting.rs`, `recipe_book*.rs`, `stations.rs`, `merchant.rs`; game.rs `fn menu_ops`, `fn click_inventory`; G: `stations.rs`, `trading.rs`, `recipe_book.rs`, `machines.rs` |
-| Commands | parse: crate `horizon-command` (`args.rs`, `selector.rs`, `tree_*.rs`, `vanilla.rs`); run: G: `commands.rs` (dispatch) + `commands/*.rs` (`admin`, `execute`, `items`, `players`, `world_cmds`...); L: `scoreboard_cmd.rs`, `data_cmd.rs`; `horizon-client-core`: `nbt_path.rs`, `scoreboard.rs`; G: `functions.rs`, `command_blocks.rs` |
-| UI screens | `Screen` enum in game.rs; L: `title.rs` + `title/`, `options_ui.rs`, `multiplayer.rs`, `pack_screen.rs`, `graphics_ui.rs`, `screen_draw.rs`, `ui.rs` (widgets), `hud.rs`, `hud_layout.rs`, `hud_overlays.rs`, `chat.rs`, `tab_list.rs`; G: `startup_menu.rs`, `screens.rs` (pause, death), `options.rs`, `lan_screen.rs`, `chat.rs`, `sign_edit.rs`, `books.rs` |
-| Multiplayer client | L: `net.rs` (network thread); G: `remote.rs` (`fn handle_packet`, `fn tick_remote`), `remote_*.rs` (mob data, objects, projectiles, vehicles, stations) |
-| LAN host / server side | L: `lan/` (`conn.rs` handshake + login threads, `hub.rs` + `hub/` play state, `chunks.rs`, `entity.rs`, `tracking.rs`, `guest.rs`, `playerdata.rs`); G: `lan.rs` (`LanHost`), `lan_actions.rs` (`fn as_guest`, `fn tick_guests`), `lan_*.rs` per feature, `lan_entities.rs` (tracked entities) |
-| Integrated server | G: `integrated.rs` (the server thread), `levels.rs` (one level per dimension, `fn tick_server`), `server_travel.rs` |
-| Dedicated server | G: `dedicated.rs`, `dedicated/status.rs`; crates `horizon-server-files`, `horizon-server`, `horizon-anticheat` (L: `lan/anticheat.rs`) |
-| Save and load | L: `save.rs` (level.dat, regions, playerdata), `entity_nbt.rs`, `options_file.rs`; `horizon-client-core/src/block_entity_nbt.rs`; G: `saving.rs`, `persist.rs` (entities); `crates/horizon-world/src/{region.rs,nbt.rs,datafix/}` |
-| Input | game.rs `fn window_event`, `fn key_pressed`, `fn play_mouse`; crate `horizon-client-input` (`keybinds.rs`, `keymapping.rs`, `key_names.rs`, `mouse.rs`, `input.rs`, `interaction_input.rs`, `gamepad.rs`, `clipboard.rs`); L: `osk.rs`; G: `pad.rs`, `pad_menu.rs` |
-| Audio | L: `audio.rs` (mixer), `sound_engine.rs`, `sound_events.rs`, `music.rs`, `ambience.rs`; G: `music.rs`, `subtitle_hud.rs` |
-| Resource packs | L: `packs.rs` + `packs/`, `pack_screen.rs`, `atlas_sources.rs`, `sprites.rs`, `mipmap.rs`, `model_library.rs`, `font.rs`, `mobs/cem.rs` + `mobs/cem_anim.rs` (OptiFine/EMF entity models and their animations); `horizon-client-core/src/lang.rs`; crates `horizon-assets`, `horizon-optifine`; G: `packs.rs` |
-| Agent control | L: `control.rs` (socket), `bin/horizon-ctl/`; G: `control.rs`, `agent.rs`, `events.rs`, `ui_control.rs` ([docs/agent-control.md](docs/agent-control.md)) |
-| Mods | crate `horizon-mods`; G: `mods.rs`; L: `mod_content.rs`, `mod_list.rs` |
-| Horizon extras, settings | L: `extras.rs`, `graphics.rs`, `settings.rs`, `minimap.rs`; G: `extras.rs`, `tweaks.rs`, `options.rs` |
-
-## How `Game` is organised
-
-- `struct Game` (game.rs, ~290 fields) holds everything. Its methods are spread over ~180 files: game.rs keeps
-  the core (tick, render, input, inventory, world open/close) and each `game/<feature>.rs` adds an
-  `impl Game<'_>` block for one feature, with its own state types. Fields stay private to the gameplay module and its descendants. Gameplay tests run in the gameplay library, separate from reusable-library tests.
-- Find a feature's code: `grep -rn "fn tick_<thing>\|fn <verb>_<thing>" crates/horizon-client/src/game*`;
-  the file is usually `game/<thing>s.rs`. Who calls it: grep the name in game.rs's `fn tick` / `fn tick_world`.
-- Fields that say which mode runs: `remote` (this window is a client of a server: multiplayer, LAN guest, or
-  single player on its server thread), `lan` (`LanHost`: this world is open to the network), `integrated`
-  (the window's own server thread), `serving` (this `Game` *is* that server thread), `options.dedicated`.
-  `fn tick` returns `tick_remote()` when `remote` is set; a server ticks its levels (`fn tick_world`).
-- A server's players run through the shared gameplay code: `as_guest` swaps the guest's
-  state (position, inventory, mode, mining, item use) into `Game` for one call (`game/lan_actions.rs`), and
-  `levels.rs` swaps whole dimensions in the same way. Changes reach clients through the block log, level
-  events and the entity tracker (`lan/tracking.rs`, `game/lan_entities.rs`).
-- Shared read-only data: `Resources` (`res`: blocks, items, recipes, mob types, biomes) and `PackResources`
-  (`pack`), both in game.rs.
-
-## Single player runs on a server thread
-
-`game/integrated.rs` runs a second `Game` (`serving`) on a "Server thread" with one level per dimension;
-the window joins it as a client through memory (`remote`), exactly as a LAN guest or a dedicated server's
-player does (#1514). A window's `Game` never ticks a world itself: the old in-frame path is gone
-(`--in-frame` and `--no-server-thread` only print a notice; `HORIZON_SERVER_THREAD` is ignored).
-Open `[server-thread]` issues list the gaps left.
-
-Single player, LAN guests and dedicated servers all run the server code, so a fix there serves all three.
-Test the server thread when you touch player-facing gameplay:
-
-```sh
-cargo run --profile fast -p horizon-client -- --resources .local/horizon-client/26.3 --world T               # server thread
-python3 tools/lan_e2e.py --check <name>                  # host on its server thread, guest is a server client
-python3 tools/parity.py dedicated_server server_entities server_player_damage
-```
-
-## Docs worth knowing
-
-[docs/parity-workflow.md](docs/parity-workflow.md) (runner, gate, shards, scopes) ·
-[docs/native-client.md](docs/native-client.md) (options, controls, horizon-ctl) ·
-[docs/server-levels.md](docs/server-levels.md) (levels per dimension) ·
-[docs/rust-parity.md](docs/rust-parity.md) (what is ported) · [docs/known-issues.md](docs/known-issues.md) ·
-[docs/release-flow.md](docs/release-flow.md) · [docs/README.md](docs/README.md) (index).

CLAUDE.md

@@ -1 +0,0 @@
-AGENTS.md

CONTRIBUTING.md

@@ -1,146 +0,0 @@
-# Contributing to Horizon
-
-Thanks for helping. Horizon is Minecraft: Java Edition 26.3 rewritten in Rust, and the one rule that shapes
-everything is that **it plays exactly like vanilla**. This page is the short version of how we work; questions are
-welcome on [Discord](https://discord.gg/playhorizon).
-
-This repository holds the game and the launcher, plus the tools, tests and docs that build, check and release them.
-The website (playhorizon.dev) is built in a separate repository from this one's README, `docs/api/` and roadmap. Anything
-else (videos, Discord and other community material) lives elsewhere.
-
-**Where to start: [playhorizon.dev/hub](https://playhorizon.dev/hub).** It shows what is being done now and next
-([ROADMAP.md](ROADMAP.md) in the repository), the work board, good first tasks, and the forms to report a bug or
-suggest something. A pull request for a roadmap item carries its `roadmap:<id>` label; ideas go to the suggestion
-queue (the hub, or `/suggest` on Discord) rather than to issues, which are for bugs.
-
-## Build it
-
-- **Prerequisites:** Rust (stable), Python 3.10+, JDK 25, and on Linux the ALSA and udev headers
-  (`libasound2-dev libudev-dev`).
-- **Resources:** Horizon never downloads the game; it prepares its resources from your own copy of Minecraft 26.3, as
-  described in [Build from source](README.md#build-from-source).
-- **Commands:**
-
-  ```sh
-  cargo run --release -p horizon-prepare -- --prepare --server-jar ~/Downloads/server.jar
-  cargo run --release -p horizon-client
-  ```
-
-- **Launcher:** its own Cargo workspace in `launcher/` (`cd launcher && cargo run`; on NixOS, `nix-shell` first).
-
-## Vanilla first
-
-Wherever vanilla has a feature, vanilla is the specification, down to the order of random calls. "Parity" here means
-Horizon gives the same results as the pinned 26.3 client and server for the same inputs, checked by a **harness**: a
-`tools/test_*_parity.py` script that runs a small Java oracle against the real game and a Rust probe against Horizon,
-and compares their outputs. There are about 290 of them.
-
-- **Read the vanilla code before writing Horizon's.** `tools/rea_vanilla.py` queries the pinned game bytecode:
-  `python3 tools/rea_vanilla.py method net.minecraft.world.level.block.DispenserBlock dispenseFrom`.
-  Say in your pull request which vanilla classes and methods you followed.
-- **Gameplay changes come with a harness**, new or extended, so the next change can't silently break them.
-  [The parity workflow](docs/parity-workflow.md) shows how harnesses run; copy a nearby one.
-- **Horizon's own features** (the launcher, the new menus) follow [the design system](docs/design-system.md) and are
-  off by default wherever they would change the vanilla look.
-- **Everything players run is Rust.** Python and Java are fine for dev tools and harness drivers in `tools/`, never
-  for player-facing code.
-- **No game files in the repo.** Never commit game files, decompiled source or prepared resources (`.local/`):
-  `tools/check_public_tree.py` rejects them (`git config core.hooksPath .githooks` runs it before every commit).
-  The pre-push hook checks the full history reachable from the branches and tags being pushed. Run
-  `python3 tools/check_public_tree.py --history` to audit the history of all local refs.
-
-## Only original code, or code whose license allows it
-
-Horizon is MIT. Its code is written from Minecraft 26.3 itself and from public documentation. Since 30 October 2026
-another project's source may also be read and used, **only when that project's license allows it**:
-
-- **Allowed:** MIT, MIT-0, BSD-2-Clause, BSD-3-Clause, 0BSD, ISC, zlib, Apache-2.0, Unlicense, and the CC0-1.0
-  public-domain dedication. That code may be read, copied or adapted.
-- **Off limits, even to read:** GPL, LGPL (Iris), AGPL, MPL, EPL, Polyform (Sodium), the Creative Commons licenses
-  (CC BY, CC BY-SA, CC BY-NC and the others; CC0 is a public-domain dedication, not one of them), custom or
-  "source available" licenses, all rights reserved (OptiFine), and any project with no license or an unclear one.
-  Don't read, copy, translate or paraphrase their source, and don't send code an AI tool wrote from it. Being able
-  to download a mod or a pack does not give you the right to read its files.
-- **Check the license yourself.** Read the LICENSE file at the commit you use and the header of each file you take:
-  some repositories mix licenses, and a file under another license is off limits. A license that changed: the one at
-  your commit counts. In doubt, don't: ask in #contributors first.
-- **Say it in the pull request:** the project, a link to the commit, its license, and what you read or copied. A
-  pull request that used another project's source without saying so is closed.
-- **Copied or adapted code** keeps its copyright line and license notice at the top of the file, and gets an entry
-  in [THIRD_PARTY_NOTICES.md](THIRD_PARTY_NOTICES.md). Apache-2.0 code also keeps its NOTICE text and says what
-  was changed.
-
-User documentation and file formats are fine to read, and packs and mods are fine to run and observe, whatever their
-license. Shader packs are a clean-room rewrite of the pack format, produced from a written description of it (see
-#1561); they carry no foreign source, and the rules above still apply to anything you read while working on them.
-
-## Before asking for review
-
-Run the self-check and paste the block it prints into your pull request:
-
-```sh
-python3 tools/pr_ready.py --base upstream/main   # or origin/main if you work on the main repository
-```
-
-It looks at what your branch changes and runs what matters: rustfmt, clippy with warnings denied, the tests of the
-crates you touched (and the launcher's), generated files, `Cargo.lock`, the Python tests, and the vanilla harnesses
-your change can affect. Without the vanilla data on your machine it lists those harnesses instead; CI runs them.
-`--quick` skips the harnesses. It exits non-zero when something fails.
-
-For the game workspace, Clippy checks all targets of the touched crates and their transitive workspace dependents,
-including examples. The dependency scope includes optional, platform, build and development dependencies. Tests run
-library, binary, integration and doc tests without building unrelated example executables. Shared Cargo
-configuration and toolchain changes select the whole workspace; CI also keeps its workspace-wide checks.
-
-## Claim before you start
-
-Work is tracked in GitHub issues, and an issue that is assigned is taken (so is one with the `in progress` label:
-claimed on Discord with Kira's `/claim`): pick another, or ask its holder in the thread. Before you start, comment
-**`/claim`** on the issue; you are assigned at once, no role needed. No issue for your work yet? Open one (a line is
-enough), then claim it. `/unclaim` gives it back. Issues labelled `tracker`, `proposal` or `not claimable` aren't
-claimed whole: claim one of the issues a tracker lists, or open one for the part you take.
-
-A claim with no open pull request linking the issue (`Fixes #123` in the description, or a draft) is released after
-5 days, with a comment: open a draft early. You can hold 8 open issues at a time, not counting the ones your
-pull requests already fix. Agents claim the same way.
-
-When your pull request changes the same functions as another open one, or closes the same issue, a bot comment names
-it (edited on every push, never repeated): talk to its author in the thread before you both finish the same work.
-
-## Pull requests
-
-- **Small.** One change per pull request, under about 500 lines of code where you can; split bigger work into
-  pieces that each make sense alone. Small pull requests get reviewed and merged the same day.
-- **Fill in the template**: what and why, the vanilla reference, the pr_ready block, screenshots for anything you
-  can see.
-- **Tick "Allow edits by maintainers".** When something small is left (a lint, a rebase, a nit) we push the fixup
-  ourselves instead of sending it back to you; only design questions come back.
-- **Once we've pushed to your branch, merge main into it; don't rebase or force-push.** A rebase or force-push
-  replaces our commits with yours and erases the fixes we added (it happened on #5188 and #5203). Tell your agent
-  too: `git merge origin/main`, never `git rebase` or `git push --force` on a branch a maintainer has touched. If
-  our fixes get erased anyway, we finish the work in our own pull request that keeps your commits and credits you.
-- **Tick its kind** in the template: `parity` (Horizon now does what vanilla does), `bug` (a crash or breakage),
-  `perf`, `feature` (new for players), `extra` (Horizon-only, off by default), `tooling` or `docs`. A workflow sets
-  that label, and area labels (`launcher`, `mobs`, `worldgen`, `rendering`...) from the paths you change.
-  `label:parity` is the list of real progress toward vanilla.
-- **Release labels** (we set them if you can't): `feature` also puts it under "New" in the release notes,
-  `skip-release` when players see no change (tooling, docs, tests), nothing for a fix. `release-now` is for crash
-  fixes that shouldn't wait. pr_ready suggests one.
-
-Who reviews and merges: the Horizon Team, on CI for ordinary pull requests; risky ones (saves, network, world
-generation, the launcher's updates) wait for a local proof first ([merging](docs/release-flow.md#merging)).
-
-Every merge to main is released automatically ([release flow](docs/release-flow.md)), so main always stays playable.
-How agents, checks, releases and signed updates keep this safe: [security](docs/security.md).
-
-## Parity checks on forks
-
-The `verify` check (formatting, lints, tests) runs on every pull request. The `parity` check runs the affected
-harnesses on a maintainer's machine, which holds the game files, so it never runs a fork's code on its own: a
-maintainer reads your change, then adds the `run-parity` label, which runs it once on your current commit. After
-new pushes, we add it again.
-
-## Talk to us
-
-[Discord](https://discord.gg/playhorizon) for questions and ideas, [issues](https://github.com/horizon-rust/horizon/issues)
-for bugs. To take something on, `/claim` its issue ([above](#claim-before-you-start)).

Cargo.toml

@@ -1,93 +0,0 @@
-[workspace]
-exclude = ["launcher", "crates/horizon-telemetry-server", "crates/horizon-mod-registry", "third_party/wgpu-hal", "third_party/naga", "third_party/libmimalloc-sys"]
-members = [
-    "crates/horizon-core",
-    "crates/horizon-dualsense",
-    "crates/horizon-narrator",
-    "crates/horizon-threads",
-    "crates/horizon-hdr",
-    "crates/horizon-world",
-    "crates/horizon-client",
-    "crates/horizon-client-lib",
-    "crates/horizon-client-core",
-    "crates/horizon-client-input",
-    "crates/horizon-client-render",
-    "crates/horizon-cosmetics",
-    "crates/horizon-command",
-    "crates/horizon-items",
-    "crates/horizon-server-files",
-    "crates/horizon-anticheat",
-    "crates/horizon-chat-filter",
-    # The Model Context Protocol, shared by horizon-ctl, horizon-server and the launcher.
-    "crates/horizon-mcp",
-    "crates/horizon-server",
-    "crates/horizon-bots",
-    "crates/horizon-assets",
-    "crates/horizon-protocol",
-    "crates/horizon-theme",
-    "crates/horizon-prepare",
-    "crates/horizon-telemetry",
-    "crates/horizon-bench",
-    "crates/horizon-friends",
-    "crates/horizon-relay",
-    "crates/horizon-mods",
-    "crates/horizon-mod-api-gen",
-    "crates/horizon-mod-api-gen/dispatch-tests",
-    "crates/cargo-horizon-mod",
-    "crates/horizon-port-pack",
-    "crates/horizon-shaders",
-    "crates/horizon-optifine",
-    "crates/horizon-shader-api",
-    "crates/horizon-release-sign",
-    "crates/horizon-mod-deps",
-    "xtask",
-]
-resolver = "2"
-
-[workspace.package]
-edition = "2024"
-license = "MIT"
-rust-version = "1.85"
-
-# Ports mirror vanilla's Java signatures, index loops and nested generic types
-# one to one so they can be checked against the decompiled sources.
-[workspace.lints.clippy]
-too_many_arguments = "allow"
-type_complexity = "allow"
-needless_range_loop = "allow"
-large_enum_variant = "allow"
-
-# wgpu-hal 30.0.1 with gfx-rs/wgpu#10124: wgpu 30 creates a Vulkan descriptor
-# pool with no pool sizes while it creates the device, which Vulkan allows only
-# since 1.3.215, and Intel's Windows driver for 6th-10th gen iGPUs (HD 520/530,
-# UHD 620/630) crashes on it with an access violation (#746). It also fixes the
-# Metal backend's lookup of the CoreGraphics HDR colour space names, which handed
-# CoreGraphics a symbol's address as the string and crashed HDR output on macOS.
-# And gfx-rs/wgpu#10714: on Windows, Vulkan waits for the acquire fence only in
-# FIFO (VSync), where it was meant to pace frames; with VSync off it made every
-# frame wait for the GPU to finish the one before (#4604).
-# Drop this and the folder once a wgpu release has these fixes.
-[patch.crates-io]
-wgpu-hal = { path = "third_party/wgpu-hal" }
-# naga 30.0.1, with the fixes to its GLSL frontend that shader packs need (THIRD_PARTY_NOTICES.md).
-naga = { path = "third_party/naga" }
-# libmimalloc-sys 0.1.49 whose mimalloc v3 counts bits without POPCNT when MSVC builds it: the
-# game died before main on CPUs without it (Core 2, #7264; THIRD_PARTY_NOTICES.md). Drop this and
-# the folder once a libmimalloc-sys release has microsoft/mimalloc#1291's fix.
-libmimalloc-sys = { path = "third_party/libmimalloc-sys" }
-
-# Line tables keep file:line in backtraces; full debug info made every
-# example and test binary hundreds of megabytes and slow to link.
-[profile.dev]
-debug = "line-tables-only"
-
-[profile.release]
-lto = "thin"
-codegen-units = 1
-
-# Optimized but quick-to-link builds for iteration: cargo build --profile fast
-[profile.fast]
-inherits = "release"
-lto = false
-codegen-units = 16
-incremental = true

LICENSE

@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2026 Ludovic Marie and the Horizon contributors
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.

README.md

@@ -1,158 +0,0 @@
-<p align="center">
-  <img src="docs/media/banner.webp" alt="Horizon: the game you know, rebuilt in Rust" width="100%">
-</p>
-
-<p align="center">
-  <a href="https://playhorizon.dev"><b>Website</b></a> ·
-  <a href="#download"><b>Download</b></a> ·
-  <a href="https://playhorizon.dev/docs/"><b>Docs</b></a> ·
-  <a href="https://discord.gg/playhorizon"><b>Discord</b></a> ·
-  <a href="ROADMAP.md"><b>Roadmap</b></a> ·
-  <a href="#contributing"><b>Contributing</b></a>
-</p>
-
-<p align="center">
-  <img src="https://img.shields.io/badge/vanilla%20parity-100%25-F0795A" alt="Vanilla parity 100%">
-  <a href="#project-status"><img src="https://img.shields.io/badge/player--visible%20gaps-0%20open-F0795A" alt="Player-visible gaps open"></a>
-</p>
-
-# Horizon
-
-**Minecraft: Java Edition 26.3, rewritten in Rust.** Your worlds, the same rules and the same terrain as the Java game, checked against it by hundreds of differential tests, in one native program with no Java. Free, open source (MIT) and unofficial: you play it with your own copy of Java Edition.
-
-<p align="center">
-  <img src="docs/media/readme/valley.webp" alt="A river valley with a plains village, savanna hills and a cherry grove, seen from above with a long view distance" width="100%">
-</p>
-
-## What works today
-
-Everything below is in the current release.
-
-- **The game.** Survival, creative, hardcore and spectator; vanilla world generation in all three dimensions, mobs, villagers, raids, redstone, every command, the HUD and the recipe book. Vanilla saves open as they are, and worlds from 1.8 to 26.2 are upgraded.
-- **Multiplayer.** Join vanilla and Horizon servers (online mode included), open a world to LAN, or invite friends with a code from the launcher's Home page.
-- **Graphics.** Distant terrain up to 1,024 chunks, graphics presets, HDR and controllers, all off by default where they would change the vanilla look ([settings](https://playhorizon.dev/docs/settings)).
-- **Packs.** Resource packs, data packs and shader packs ([below](#mods-and-shader-packs)).
-- **Mods.** Content mods and native Rust mods, installed from the launcher ([below](#mods-and-shader-packs)).
-- **Servers.** Host one from the launcher, or run `horizon-server` on a VPS ([below](#host-a-server)).
-- **The launcher.** It installs and updates the game, prepares its files from your copy of Minecraft, and updates itself.
-
-<table>
-  <tr>
-    <td width="50%"><img src="docs/media/readme/sunset.webp" alt="Sunset behind a cherry grove on a hill, with a river below"></td>
-    <td width="50%"><img src="docs/media/readme/nether.webp" alt="A crimson forest in the Nether, with a piglin among the fungi"></td>
-  </tr>
-  <tr>
-    <td width="50%"><img src="docs/media/readme/survival.webp" alt="Survival in a village square: two villagers, flowers, the hotbar, health and hunger"></td>
-    <td width="50%"><img src="docs/media/readme/multiplayer.webp" alt="Two players in a LAN world: the other player's name tag and the player list"></td>
-  </tr>
-</table>
-
-<sub>Nightly 2026-11-05 on a Mac mini (Apple M4 Pro, Metal): vanilla's textures, no mods or shader packs, render distance 32 with distant terrain on.</sub>
-
-## Download
-
-Get **the Horizon launcher** from [playhorizon.dev](https://playhorizon.dev), or from [the launcher releases](https://github.com/horizon-rust/horizon/releases?q=launcher&expanded=true):
-
-| Platform | File | Needs |
-| --- | --- | --- |
-| Windows x64 | `horizon-launcher-setup.exe` | Windows 10 or 11, a GPU with Vulkan or DirectX 12 |
-| Windows on Arm | `horizon-launcher-setup-arm64.exe` | Windows 11 on Arm |
-| macOS, Apple Silicon | `horizon-launcher-macos-arm64.dmg` | macOS 12 or later |
-| macOS, Intel | `horizon-launcher-macos-x64.dmg` | macOS 12 or later |
-| Linux x86-64 | `horizon-launcher-linux-x86_64.AppImage` or `.tar.gz` | a glibc distribution, X11 or Wayland, a GPU with Vulkan or OpenGL 3.3 |
-
-**You also need a Microsoft account that owns Minecraft: Java Edition.** You sign in with it in the launcher, which plays only with an account that owns the game ([why](docs/microsoft-account.md)). Horizon contains no Minecraft code or assets: an existing install (official launcher, Prism, MultiMC...) is reused, and without one the launcher downloads 26.3 from Mojang for your account. Step by step: [Install and first launch](https://playhorizon.dev/docs/install).
-
-<table>
-  <tr>
-    <td width="50%"><img src="docs/media/readme/launcher-home.webp" alt="The launcher's Home page: the Horizon instance, Play, the version picker, the friend invite field, screenshots and the patch log"></td>
-    <td width="50%"><img src="docs/media/readme/launcher-mods.webp" alt="The launcher's Mods page: Horizon's mod registry with Zoom selected, and tabs for modpacks, resource packs, shader packs and data packs"></td>
-  </tr>
-</table>
-
-## Mods and shader packs
-
-- **Content mods** (`.hmod`): blocks, items, recipes, loot, models and textures, with no code.
-- **Native mods** (`.hnmod`): Rust that the launcher compiles into the game for you, with nothing to install.
-- **Java mods** (Fabric, NeoForge, Forge) don't run: Horizon has no Java. The launcher carries over the data and assets inside their jars, and imports modpacks (`.mrpack`, CurseForge zips, Prism instances) the same way ([modpacks](https://playhorizon.dev/docs/modpacks)).
-- **Shader packs**: Iris/OptiFine-format packs (`shaders/` folders) and Horizon's own WGSL packs, under Video Settings → Shader Packs ([pack format](docs/shaders.md)).
-
-Mods are off by default: a fresh install plays exactly like vanilla 26.3. The launcher's Mods page browses Horizon's registry and Modrinth. [Mods](https://playhorizon.dev/docs/mods) · [make a mod](docs/mods.md).
-
-## Host a server
-
-The launcher's **Servers** page creates, starts, backs up and updates a server, and invites friends. On a VPS, `horizon-server` installs with one command, needs no Java, and takes vanilla 26.3 and Horizon players alike. [Host a server](https://playhorizon.dev/docs/hosting) ([reference](docs/hosting.md)).
-
-## Agent control
-
-AI agents and scripts can play Horizon. `horizon-ctl`, shipped with the game, reads its state as JSON and acts like a player; `horizon-ctl mcp` serves the same commands over MCP.
-
-```sh
-horizon-ctl launch --world Survival --seed 5 --wait   # finds the version the launcher installed
-horizon-ctl state                                       # position, health, food, target, screen...
-horizon-ctl goto -0.5 65 -2.5 --near 2.5                # walks there along a path
-horizon-ctl break -1 65 -3                              # mines it; replies with the drops
-```
-
-`horizon-ctl help` lists every command. [Agent control](docs/native-client.md#agent-control-horizon-ctl-and-mcp).
-
-## Build from source
-
-Needs Rust 1.90+, Python 3.10+, JDK 25, and on Linux `libasound2-dev libudev-dev`. `horizon-prepare` builds the game's resources from **your own copy** of Java Edition 26.3 (checked against `research-lock.json`) and never downloads it:
-
-1. **Client:** play 26.3 once in the official launcher. Horizon reads `~/.minecraft` (or `--minecraft-dir` / `HORIZON_MINECRAFT_DIR`).
-2. **Server jar:** the 26.3 server jar (`downloads.server.url` in `versions/26.3/26.3.json`), passed once with `--server-jar` or `HORIZON_SERVER_JAR`.
-
-```sh
-git clone https://github.com/horizon-rust/horizon.git
-cd horizon
-cargo run --release -p horizon-prepare -- --prepare --server-jar ~/Downloads/server.jar   # needs JDK 25
-cargo run --release -p horizon-prepare -- sounds   # optional: sounds from your launcher install
-cargo run --release -p horizon-client
-```
-
-Prepared files land in the gitignored `.local/`: never commit or share them. Options, controls and architecture: [the native client guide](docs/native-client.md); all developer docs: [docs/README.md](docs/README.md).
-
-## Contributing
-
-Issues and pull requests are welcome: read [CONTRIBUTING.md](CONTRIBUTING.md) (vanilla first, small pull requests), and see [ROADMAP.md](ROADMAP.md) or [playhorizon.dev/hub](https://playhorizon.dev/hub) for what's next. Questions: [Discord](https://discord.gg/playhorizon). Before a pull request, run the self-check and paste its output:
-
-```sh
-git config core.hooksPath .githooks
-python3 tools/pr_ready.py
-```
-
-It runs rustfmt, clippy, the touched crates' tests, the Python tests, the public-tree check and the vanilla harnesses your change affects. Never commit game files, decompiled source or prepared resources.
-
-## Project status
-
-**Player-visible gaps: 0 open** of the 833 the [port ledger](tools/port_ledger.py) found, reading every vanilla 26.3 method against Horizon's code: vanilla behaviour a player would notice that Horizon doesn't have yet. By area: Animals [0](https://github.com/horizon-rust/horizon/issues/3512); Monsters and bosses [0](https://github.com/horizon-rust/horizon/issues/3513); Entities, projectiles, vehicles and decorations [0](https://github.com/horizon-rust/horizon/issues/3514); Items, enchantments and inventories [0](https://github.com/horizon-rust/horizon/issues/3515); Blocks, redstone and fluids [0](https://github.com/horizon-rust/horizon/issues/3516); World, world generation and saves [0](https://github.com/horizon-rust/horizon/issues/3517); Screens, HUD and client packets [0](https://github.com/horizon-rust/horizon/issues/3518); Entity and block rendering, models [0](https://github.com/horizon-rust/horizon/issues/3519); Server and players on the server [0](https://github.com/horizon-rust/horizon/issues/3520); Mob AI, villagers and raids [0](https://github.com/horizon-rust/horizon/issues/3521). This number goes down as gaps close (`tools/parity_gaps.py`); the harness results below say that what is tested matches.
-
-The table is the project's own audit: every subsystem matches vanilla in every harness that compares it. 100% means 100% of what the harnesses compare, not that nothing else differs. What players still run into: [known issues](docs/known-issues.md).
-
-### Java parity: 100%
-
-Scores: 0 (absent), 0.25 (started), 0.5 (playable, major features missing), 0.75 (mostly complete) or 1 (complete and verified by differential tests); the percentage is their average. Last audited 2026-10-13: the harnesses pass on Linux and macOS. The [port ledger](tools/port_ledger.py) adds a method-by-method view of what is ported.
-
-| Subsystem | Score | Main gaps |
-| --- | ---: | --- |
-| Window, input and game loop | 1 | None: game loop, options, camera, auto-jump, toggle sprint/sneak and frame limiter match |
-| Assets and resources | 1 | None: item models match over 196,290 stacks; the resource pack screen over 3,000 sessions |
-| Network protocol and multiplayer | 1 | None: joins vanilla servers; the dedicated server matches vanilla's files, login, configuration, play and command tree; LAN discovery over 462 cases (offline mode only) |
-| Chunk storage and palettes | 1 | None: client and saves share paletted containers, identical to vanilla over 266 scenarios |
-| Section meshing | 1 | None: 112 scenes and over a million quads identical to vanilla |
-| Rendering | 1 | None: entity models, block entity renderers (407 cases) and animations (296), HUD overlays (2,200 states), the recipe book (600), player list, subtitles and world border match |
-| Lighting | 1 | None: saved and relit light matches vanilla, slabs and stairs included |
-| World generation | 1 | None: 2,352 whole chunks over 225 structure sites, in all three dimensions, identical to vanilla |
-| Region files and saves | 1 | None: saves round-trip with vanilla; worlds from 1.8 to 26.2 upgrade as vanilla's DataFixers do |
-| Entities and physics | 1 | None: attributes, spawn rules, natural spawning (15,500 cases), raids and patrols (1,900), `finalizeSpawn` (24,000) and mob AI (92 scenarios) match |
-| Interaction and inventory | 1 | None: menu clicks over 8,000 sequences; recipe book placement (6,000), buttons (1,200), saved book (1,500), loom and crafter screens (1,600) |
-| Menus, HUD and chat | 1 | None: every command (758 over 39,685 inputs), scoreboards (81,000 operations), the player list (872,000 draw calls), chat and its suggestions (3,000 sessions) match |
-| Audio | 1 | None: the sound engine, sound events, music, situational music, ambience and subtitles match vanilla |
-| Block behaviours and ticking | 1 | None: block updates, random ticks, redstone, dispensers (6,000 cases), crafters (4,000), container spills (4,000), copper golems and the sculk family (435 scenarios) match |
-
-## Licence
-
-[MIT](LICENSE), for the project's original work; dependencies keep their own licences ([notices](THIRD_PARTY_NOTICES.md)). Horizon is made by [Ludovic Marie](https://lu4ovic.com) ([@ludovic111](https://github.com/ludovic111)) and [its contributors](https://github.com/horizon-rust/horizon/graphs/contributors); support it on [GitHub Sponsors](https://github.com/sponsors/ludovic111).
-
-NOT AN OFFICIAL MINECRAFT PRODUCT. NOT APPROVED BY OR ASSOCIATED WITH MOJANG OR MICROSOFT. Minecraft is a trademark of Mojang Synergies AB; its code and assets belong to Mojang and Microsoft under the [Minecraft EULA](https://www.minecraft.net/en-us/eula).

ROADMAP.md

@@ -1,926 +0,0 @@
-# Horizon roadmap
-
-<!-- Generated by tools/roadmap.py from roadmap/roadmap.toml: edit that file, then run `python3 tools/roadmap.py build`. -->
-
-What is being done on Horizon, what comes next and where you can help. There are no dates: things are Now, Next or Later. Each item is said in plain words, with the technical picture folded under it. The same roadmap, with a Simple / Technical switch, the board, the journal and how to help, is on [playhorizon.dev/hub](https://playhorizon.dev/hub). Pull requests carry the `roadmap:<id>` label of their item.
-
-## At a glance
-
-Horizon is Minecraft: Java Edition 26.3 rewritten from scratch in Rust, so it runs faster on the same computer. Single player, LAN, servers, resource packs and Horizon's own mods work today, on your own copy of the game.
-
-**Being done now**
-
-- **Steady frames at long render distances**: Making Horizon faster than vanilla on every computer, with smooth camera movement even at 32 chunks, by spreading the work better over the processor's cores.
-- **Modpacks' world generation, natively**: Making the world-generation mods of popular modpacks (new structures, YUNG's dungeons and mineshafts, packs built on Lithostitched) generate their worlds in Horizon, natively and fast.
-- **Single player as a server: the last differences**: Single player now runs a small server in the background, as vanilla does. We are fixing what still behaves differently there; every fix also works for LAN and server players.
-- **Vanilla parity: the player-visible gaps, closed**: Every method of the Java game is tracked with where Horizon does it, and the differences players can see are being closed, list by list: mobs, blocks, items, screens, rendering, servers.
-- **Mods**: Mods for Horizon, as one line of work led by the modding team: native mods the launcher builds into your game, mods on servers, mod screens and settings, tools for mod makers, the registry and machines.
-
-**Next**: Fresh benchmarks against vanilla; Faster world creation and entry on small CPUs; Low-end computers: Steam Deck, old Macs, 8 GB; Native upscaling; Server console, bans and a full admin API; Hosting polish: Windows service, safe updates; One single-player path: remove the in-frame world; Faster block lookups; Playing on servers: everything shows as it should; Shader packs, written again from scratch; A new launcher design; Splitscreen.
-
-**How to help**: Play it and tell us what differs from vanilla (Discord or GitHub), run the benchmark on your computer, vote for what you want next, or pick one of the Help wanted items.
-
-**Developers**: Read CONTRIBUTING.md, pick a Help wanted item or a To do card, check vanilla's code for the behaviour, and paste the block `python3 tools/pr_ready.py` prints in your pull request.
-
-## Now
-
-### Performance
-
-#### Steady frames at long render distances
-
-Making Horizon faster than vanilla on every computer, with smooth camera movement even at 32 chunks, by spreading the work better over the processor's cores.
-
-Owner: [ludovic111](https://github.com/ludovic111) · Tracking: [#3909](https://github.com/horizon-rust/horizon/issues/3909)
-
-<details><summary>Technical</summary>
-
-Frame pacing at render distance 32 ([#678](https://github.com/horizon-rust/horizon/issues/678)): long frames come from work competing with the render thread. In review: no main-thread tick stutter at high render distances ([#3827](https://github.com/horizon-rust/horizon/issues/3827)), each proto chunk's light view built once ([#3815](https://github.com/horizon-rust/horizon/issues/3815)), video memory handed back by the vertex arena ([#3466](https://github.com/horizon-rust/horizon/issues/3466)), chunk batches assembled on helper threads ([#3036](https://github.com/horizon-rust/horizon/issues/3036)), free structure starts in the generation workers ([#1760](https://github.com/horizon-rust/horizon/issues/1760)). Still open: far terrain at 48 to 64 chunks ([#718](https://github.com/horizon-rust/horizon/issues/718)) and CPU-bound fields of block entities ([#717](https://github.com/horizon-rust/horizon/issues/717)). Every change shows before and after numbers from `tools/perf_bench.py` against vanilla 26.3 ([docs/benchmark.md](docs/benchmark.md)).
-
-</details>
-
-#### Servers that hold 20 TPS with 50 to 100 players
-
-Servers that keep 20 ticks per second with 50 to 100 players. Today Horizon holds it up to 50 bots and drops to about 10 at 100.
-
-Owner: [ludovic111](https://github.com/ludovic111) · Tracking: [#3910](https://github.com/horizon-rust/horizon/issues/3910)
-
-<details><summary>Technical</summary>
-
-Measured against vanilla on equal work ([docs/server.md](docs/server.md), Scale): Horizon is ahead with few players and when exploring, but vanilla's tick is shorter with 25 to 50 players near spawn. Ideas on the list: send entity changes instead of rebuilding every entity each tick (about 15 percent), fewer memory reads in random ticks and collision scans, cheaper item collision checks, mob AI and natural spawning. The bot benchmark (`horizon-bots`) is the proof.
-
-More: [#3847](https://github.com/horizon-rust/horizon/issues/3847) · [#2608](https://github.com/horizon-rust/horizon/issues/2608)
-
-</details>
-
-### Modpacks
-
-#### Modpacks' world generation, natively
-
-Making the world-generation mods of popular modpacks (new structures, YUNG's dungeons and mineshafts, packs built on Lithostitched) generate their worlds in Horizon, natively and fast.
-
-Owner: [ThatCakeIsAPie](https://github.com/ThatCakeIsAPie) · Tracking: [#3913](https://github.com/horizon-rust/horizon/issues/3913)
-
-<details><summary>Technical</summary>
-
-`horizon-port-pack` carries a pack's data-driven content over, and 26.2 data packs are upgraded to 26.3's format ([#3369](https://github.com/horizon-rust/horizon/issues/3369)). In review: worlds taller than 32 sections and each level's shape from its dimension type ([#3480](https://github.com/horizon-rust/horizon/issues/3480), [#3488](https://github.com/horizon-rust/horizon/issues/3488)), data-pack biomes in local and remote worlds ([#3491](https://github.com/horizon-rust/horizon/issues/3491)), block state providers ([#3802](https://github.com/horizon-rust/horizon/issues/3802)), surface rules by biome id ([#3366](https://github.com/horizon-rust/horizon/issues/3366)), Lithostitched's pool and processor modifiers ([#1777](https://github.com/horizon-rust/horizon/issues/1777)). Mods whose Java code does more than world generation don't run ([docs/modpacks.md](docs/modpacks.md)).
-
-</details>
-
-### Mods and API
-
-#### Mods
-
-Mods for Horizon, as one line of work led by the modding team: native mods the launcher builds into your game, mods on servers, mod screens and settings, tools for mod makers, the registry and machines.
-
-Owner: [levzzz5154](https://github.com/levzzz5154) · Tracking: [#3911](https://github.com/horizon-rust/horizon/issues/3911)
-
-<details><summary>Technical</summary>
-
-One item for all modding work ([#3911](https://github.com/horizon-rust/horizon/issues/3911)), led by levzzz5154 with vladislav_hagen; the order between the parts is theirs. Native mods on stable hook points (game/native_hooks.rs, [#3345](https://github.com/horizon-rust/horizon/issues/3345), [#3346](https://github.com/horizon-rust/horizon/issues/3346), [#3434](https://github.com/horizon-rust/horizon/issues/3434), [#3435](https://github.com/horizon-rust/horizon/issues/3435)) built by the launcher ([#3388](https://github.com/horizon-rust/horizon/issues/3388), [#3855](https://github.com/horizon-rust/horizon/issues/3855)); server-side hooks ([#3878](https://github.com/horizon-rust/horizon/issues/3878), [#3706](https://github.com/horizon-rust/horizon/issues/3706)); mod-owned screens, input and drawing; tools for mod makers (templates, `native.py check`); the registry ([#1634](https://github.com/horizon-rust/horizon/issues/1634), [#1642](https://github.com/horizon-rust/horizon/issues/1642), [#1659](https://github.com/horizon-rust/horizon/issues/1659)); machines with inventories and menus ([#1189](https://github.com/horizon-rust/horizon/issues/1189)); mods that read and change the world through the server. [docs/native-mods.md](docs/native-mods.md).
-
-More: [#3351](https://github.com/horizon-rust/horizon/issues/3351) · [#3353](https://github.com/horizon-rust/horizon/issues/3353) · [#3360](https://github.com/horizon-rust/horizon/issues/3360) · [#1596](https://github.com/horizon-rust/horizon/issues/1596) · [#1635](https://github.com/horizon-rust/horizon/issues/1635)
-
-</details>
-
-### Gameplay parity
-
-#### Single player as a server: the last differences
-
-Single player now runs a small server in the background, as vanilla does. We are fixing what still behaves differently there; every fix also works for LAN and server players.
-
-Owner: [ludovic111](https://github.com/ludovic111) · Tracking: [#3914](https://github.com/horizon-rust/horizon/issues/3914)
-
-<details><summary>Technical</summary>
-
-Since [#1514](https://github.com/horizon-rust/horizon/issues/1514) single player runs on the server thread (`game/integrated.rs`) and the window joins it as a client. The open `[server-thread]` issues list the gaps. In review: breeding's advancement and statistic ([#3873](https://github.com/horizon-rust/horizon/issues/3873)), the client's menu when the server replaces the player ([#3841](https://github.com/horizon-rust/horizon/issues/3841)), splashes when falling in water ([#3621](https://github.com/horizon-rust/horizon/issues/3621)). [docs/server-levels.md](docs/server-levels.md).
-
-</details>
-
-### Launcher
-
-#### Minecraft Java instances in the launcher
-
-Play the real Java game from the Horizon launcher too: vanilla and modded instances, any version, mods from Modrinth filtered to what fits, and your instances imported from other launchers.
-
-Owner: [ludovic111](https://github.com/ludovic111) · Tracking: [#3915](https://github.com/horizon-rust/horizon/issues/3915)
-
-<details><summary>Technical</summary>
-
-For an account that owns the game: any version downloaded with the Java it needs ([#3406](https://github.com/horizon-rust/horizon/issues/3406)), Java instances, the version list and the CLI ([#3395](https://github.com/horizon-rust/horizon/issues/3395)), the start command read from the version JSON ([#3419](https://github.com/horizon-rust/horizon/issues/3419)). Next: Play for a Java instance, Fabric and Quilt, then NeoForge and Forge; Modrinth with compatibility filtering and dependencies; imports from Prism, MultiMC, the CurseForge app, the Modrinth App, ATLauncher and the official launcher, each from its documented on-disk format.
-
-More: [#3506](https://github.com/horizon-rust/horizon/issues/3506)
-
-</details>
-
-### Code and tools
-
-#### A leaner codebase that builds faster
-
-Cleaning up Horizon's code: removing what nothing uses and making it quicker to build, so fixes and new features land faster.
-
-Owner: [ludovic111](https://github.com/ludovic111) · Tracking: [#3916](https://github.com/horizon-rust/horizon/issues/3916)
-
-<details><summary>Technical</summary>
-
-A review of the whole tree: dead code and stubs removed ([#1432](https://github.com/horizon-rust/horizon/issues/1432), [#1658](https://github.com/horizon-rust/horizon/issues/1658)), one probe binary per crate ([#1453](https://github.com/horizon-rust/horizon/issues/1453), [#1454](https://github.com/horizon-rust/horizon/issues/1454)), shared harness helpers ([#1448](https://github.com/horizon-rust/horizon/issues/1448)), clippy clean on the whole tree ([#1707](https://github.com/horizon-rust/horizon/issues/1707)). [docs/architecture.md](docs/architecture.md) maps each feature to its files and harnesses.
-
-</details>
-
-#### Vanilla parity: the player-visible gaps, closed
-
-Every method of the Java game is tracked with where Horizon does it, and the differences players can see are being closed, list by list: mobs, blocks, items, screens, rendering, servers.
-
-Owner: [kacpherek](https://github.com/kacpherek) · Tracking: [#3912](https://github.com/horizon-rust/horizon/issues/3912)
-
-<details><summary>Technical</summary>
-
-The port ledger ([tools/port_ledger.py](tools/port_ledger.py), tools/port_map/, [#3139](https://github.com/horizon-rust/horizon/issues/3139)) gives every 26.3 method a verdict and links the harnesses that cover it ([#3526](https://github.com/horizon-rust/horizon/issues/3526)). The player-visible gaps are ten lists, one per area ([#3512](https://github.com/horizon-rust/horizon/issues/3512) to [#3521](https://github.com/horizon-rust/horizon/issues/3521)); a fix translates the vanilla method, ticks its row and carries the `parity` label. Start from .claude/skills/vanilla-parity.
-
-More: [#3513](https://github.com/horizon-rust/horizon/issues/3513) · [#3514](https://github.com/horizon-rust/horizon/issues/3514) · [#3515](https://github.com/horizon-rust/horizon/issues/3515) · [#3516](https://github.com/horizon-rust/horizon/issues/3516) · [#3517](https://github.com/horizon-rust/horizon/issues/3517) · [#3518](https://github.com/horizon-rust/horizon/issues/3518) · [#3519](https://github.com/horizon-rust/horizon/issues/3519) · [#3520](https://github.com/horizon-rust/horizon/issues/3520)
-
-</details>
-
-## Next
-
-### Performance
-
-#### Fresh benchmarks against vanilla
-
-New public numbers comparing Horizon with vanilla on many kinds of computers, measured the same way every time, with a history that shows what each release changed.
-
-<details><summary>Technical</summary>
-
-Redo the comparison after the current performance work ([#1073](https://github.com/horizon-rust/horizon/issues/1073)); reliability, coverage and presentation ([#1346](https://github.com/horizon-rust/horizon/issues/1346)); a scene must count as loaded only once its first chunk arrives ([#1749](https://github.com/horizon-rust/horizon/issues/1749)). Next: a performance history across releases (an automatic comparison of each release with the last, on a timeline), more report fields (server TPS and MSPT, power, battery drain, temperature, throttling) and more hardware (a MacBook on battery, low-end laptops, community reports). Players' reports come in through `--benchmark` and `horizon-launcher data benchmark` ([docs/benchmark.md](docs/benchmark.md)).
-
-</details>
-
-#### Faster world creation and entry on small CPUs
-
-Creating a world and joining it should be quick even on a four-thread laptop, where a fresh world at 32 chunks can make you wait minutes for the first terrain.
-
-<details><summary>Technical</summary>
-
-Cut the per-column generation cost (noise sampling, surface rules, aquifers) and the lock convoy on structure starts, and leave one core free for the rest of the game as vanilla does ([#1760](https://github.com/horizon-rust/horizon/issues/1760) and [#1778](https://github.com/horizon-rust/horizon/issues/1778), in review, are listed under 'Steady frames at long render distances'). Still to profile on small CPUs: the first seconds of a fresh world deliver no chunk, and fluids remesh for about a minute after loading. Measured with `tools/perf_bench.py` ([docs/benchmark.md](docs/benchmark.md), [docs/profiling.md](docs/profiling.md)).
-
-</details>
-
-#### Low-end computers: Steam Deck, old Macs, 8 GB
-
-Horizon should run well on small machines: integrated graphics, the Steam Deck, older Macs and 8 GB of memory, with a battery mode that saves power on laptops.
-
-<details><summary>Technical</summary>
-
-Partly done: an opt-in 60 FPS cap with fewer workers on battery, Far Detail Reduced for integrated GPUs and animated textures on the GPU (both shipped). Left: measured targets and fixes per class of machine (memory use, worker counts, startup) on a Steam Deck, old Intel and Apple Silicon Macs and 8 GB computers, reported on the Benchmarks page.
-
-More: [docs/benchmark.md](docs/benchmark.md) · [https://playhorizon.dev/docs/performance](https://playhorizon.dev/docs/performance)
-
-</details>
-
-#### Native upscaling
-
-Draw the game at a lower resolution and sharpen it to your screen's size, in the way of FSR or DLSS, to gain frames on weaker graphics cards. An optional graphics setting.
-
-<details><summary>Technical</summary>
-
-A render-scale setting below the window size with an upscaler of our own that runs on every wgpu backend. Proof: frame time against native resolution on integrated GPUs, and screenshots for image quality. Issue [#1403](https://github.com/horizon-rust/horizon/issues/1403).
-
-More: [#3762](https://github.com/horizon-rust/horizon/issues/3762) · [#3763](https://github.com/horizon-rust/horizon/issues/3763) · [#3764](https://github.com/horizon-rust/horizon/issues/3764)
-
-</details>
-
-#### Faster block lookups
-
-Speeding up the code that reads and writes the blocks of the world, which almost everything in the game goes through: generation, lighting, meshing and ticking.
-
-<details><summary>Technical</summary>
-
-`PalettedContainer` and `PackedStorage` find an entry's word by multiply and shift instead of an integer division ([#1790](https://github.com/horizon-rust/horizon/issues/1790), [#1794](https://github.com/horizon-rust/horizon/issues/1794)); meshing looks up baked models by index, not by name ([#1747](https://github.com/horizon-rust/horizon/issues/1747)). Each change keeps the paletted storage harnesses identical and shows its microbenchmark ([docs/performance/paletted-container-access-results.md](docs/performance/paletted-container-access-results.md)).
-
-</details>
-
-### Servers and multiplayer
-
-#### Server console, bans and a full admin API
-
-Manage a server from a console, ban and pardon players, and drive it from other tools through a full admin API and an MCP server for AI agents.
-
-<details><summary>Technical</summary>
-
-`horizon-server console` (a text interface), `ban`, `pardon`, `ban-ip` and `mcp` over stdio. Admin API additions: the player list, kick, ban, op and whitelist, an SSE stream of logs and events, a text metrics endpoint, config GET and PATCH, backup delete and download. The last pieces merged: bans edited while the server is stopped ([#9767](https://github.com/horizon-rust/horizon/issues/9767)) and the MCP tools' contracts pinned by a test ([#9748](https://github.com/horizon-rust/horizon/issues/9748)). The panel's later features and vanilla's management protocol are their own item (server-panel-management). [docs/server.md](docs/server.md), [docs/api/server.md](docs/api/server.md).
-
-</details>
-
-#### Hosting polish: Windows service, safe updates
-
-Smoother hosting: a real Windows service, a backup before every update, backups that keep the world and each player's state, and a changed view distance or message without a restart.
-
-<details><summary>Technical</summary>
-
-A Windows service wrapper instead of the logon scheduled task; `backups.before_update`; hot reload of config for view distance and the message of the day (needs engine support); backups that keep world and player state ([#1808](https://github.com/horizon-rust/horizon/issues/1808), a contributor's draft, in review). [docs/hosting.md](docs/hosting.md), docs/server.md.
-
-</details>
-
-#### Playing on servers: everything shows as it should
-
-When you play on a server, other players, mobs, items and menus look and behave as in vanilla: skins, poses, item names, inventories and server networks.
-
-<details><summary>Technical</summary>
-
-Client-of-a-server fixes in `game/remote*.rs` and `horizon-protocol`: mobs' aggressive and item-use flags ([#1802](https://github.com/horizon-rust/horizon/issues/1802), [#1798](https://github.com/horizon-rust/horizon/issues/1798)), ghost items after a remote menu ([#1795](https://github.com/horizon-rust/horizon/issues/1795)), skins ([#1652](https://github.com/horizon-rust/horizon/issues/1652)), cookies and transfer packets for proxy networks ([#1650](https://github.com/horizon-rust/horizon/issues/1650)), firework boosts ([#1671](https://github.com/horizon-rust/horizon/issues/1671)), living-entity attributes and simulation distance ([#1731](https://github.com/horizon-rust/horizon/issues/1731)), styled item names ([#1702](https://github.com/horizon-rust/horizon/issues/1702)), primed TNT between updates ([#1710](https://github.com/horizon-rust/horizon/issues/1710)).
-
-</details>
-
-### Gameplay parity
-
-#### One single-player path: remove the in-frame world
-
-Single player has one way to run, the server thread, so every fix works everywhere and there are fewer bugs. The older in-frame mode is removed.
-
-<details><summary>Technical</summary>
-
-`--in-frame` (also `--no-server-thread` and `HORIZON_SERVER_THREAD=0`) ticked the world inside the window's `Game`. [#6473](https://github.com/horizon-rust/horizon/issues/6473) removes it with the code only it reached (the window's world loader and player tick, its portal travel and loading screen, the in-frame LAN host); the harnesses run on the server thread. See also 'Single player as a server' and [docs/server-levels.md](docs/server-levels.md).
-
-</details>
-
-#### Splitscreen
-
-Play with a friend on the same screen, each with a controller.
-
-Owner: [martipops](https://github.com/martipops)
-
-<details><summary>Technical</summary>
-
-Issue [#2054](https://github.com/horizon-rust/horizon/issues/2054), built by martipops as a series: up to 16 local players on the server thread's multiplayer ([#3541](https://github.com/horizon-rust/horizon/issues/3541)), each controller driving its own player ([#3794](https://github.com/horizon-rust/horizon/issues/3794)), joining with a controller ([#3801](https://github.com/horizon-rust/horizon/issues/3801)), players in windows of their own ([#3825](https://github.com/horizon-rust/horizon/issues/3825)) and the profile page ([#3826](https://github.com/horizon-rust/horizon/issues/3826)).
-
-More: [#3777](https://github.com/horizon-rust/horizon/issues/3777)
-
-</details>
-
-### Rendering
-
-#### Shader packs, written again from scratch
-
-Shader packs were removed and are being rebuilt from scratch. They come back, off by default, once the best-known packs draw properly.
-
-<details><summary>Technical</summary>
-
-A clean-room rewrite in `horizon-shaderpack`, from the packs' public format documentation only: reading packs, the preprocessor and `.properties` files are merged ([#1584](https://github.com/horizon-rust/horizon/issues/1584), [#1585](https://github.com/horizon-rust/horizon/issues/1585), [#1586](https://github.com/horizon-rust/horizon/issues/1586)); translating programs to WGSL through naga, buffers, uniforms and the terrain, entity, sky, weather and hand stages are in review ([#1698](https://github.com/horizon-rust/horizon/issues/1698) to [#1801](https://github.com/horizon-rust/horizon/issues/1801)).
-
-More: [#1561](https://github.com/horizon-rust/horizon/issues/1561) · [#1771](https://github.com/horizon-rust/horizon/issues/1771) · [#1786](https://github.com/horizon-rust/horizon/issues/1786) · [#9045](https://github.com/horizon-rust/horizon/issues/9045) · [#6233](https://github.com/horizon-rust/horizon/issues/6233) · [#6485](https://github.com/horizon-rust/horizon/issues/6485) · [#3734](https://github.com/horizon-rust/horizon/issues/3734) · [#3125](https://github.com/horizon-rust/horizon/issues/3125)
-
-</details>
-
-### Launcher
-
-#### A new launcher design
-
-A redesigned launcher: every button where you expect it, the fewest clicks to play, add an instance or add mods, smooth animations, and instant startup.
-
-Owner: [ludovic111](https://github.com/ludovic111)
-
-<details><summary>Technical</summary>
-
-Based on the site concept by the Team (Bricolage Grotesque, a night sky and an animated pixel sunset). Screens and flows are designed first, then small PRs; tokens in [crates/horizon-theme](crates/horizon-theme) and rules in [docs/design-system.md](docs/design-system.md), the game's vanilla look unchanged. Measured before and after: startup, frame time and idle CPU/GPU, reduced motion honoured. Mods screens separate Horizon native mods from Java mods; a running instance can be stopped from the launcher.
-
-More: [#3635](https://github.com/horizon-rust/horizon/issues/3635) · [#3636](https://github.com/horizon-rust/horizon/issues/3636) · [#3637](https://github.com/horizon-rust/horizon/issues/3637)
-
-</details>
-
-## Later
-
-### Performance
-
-#### Exact far terrain from real chunks
-
-Far terrain drawn from the world you really built and explored, caves and builds included, not only a preview from the seed.
-
-<details><summary>Technical</summary>
-
-Keep a 3D mip store on disk built from real chunks, drawn by the GPU beside the seed preview for areas nobody has visited. Written from scratch and measured before it is kept. Builds on Far Detail and the far-terrain levels of detail already shipped; the open work on them is [#718](https://github.com/horizon-rust/horizon/issues/718).
-
-More: [#4678](https://github.com/horizon-rust/horizon/issues/4678)
-
-</details>
-
-#### A batch of targeted optimisations
-
-Several smaller speed-ups, each measured: idle block entities that sleep, cheaper particles, faster structure placement, high-rate mice and very large texture packs.
-
-<details><summary>Technical</summary>
-
-Block entities and hoppers that skip work when idle (the hopper item scan is already skipped when no item is near); a particle frustum test first (also a parity gap), then particle quads built on the GPU; jigsaw shortcuts that skip blocked connectors and pool elements known not to fit, with layouts unchanged (trial chambers and ancient cities first); batched raw mouse input on Windows for 8000 Hz mice; a better atlas packer for huge resource packs (a 64x pack builds a 704 MiB atlas for 452 MiB of textures); sign-heavy scenes ([#1461](https://github.com/horizon-rust/horizon/issues/1461)). Profile first, keep what pays, show before and after numbers.
-
-More: [docs/profiling.md](docs/profiling.md) · [#7752](https://github.com/horizon-rust/horizon/issues/7752) · [#8251](https://github.com/horizon-rust/horizon/issues/8251) · [#10229](https://github.com/horizon-rust/horizon/issues/10229)
-
-</details>
-
-### Modpacks
-
-#### Older Fabric and Forge mods
-
-Recognise mods built for versions before 26.1 in the mod browser, so they can be checked and carried over like newer ones.
-
-<details><summary>Technical</summary>
-
-A mapping table from intermediary and SRG names so pre-26.1 jars can be classified, and a rename for mod ids with dashes (`fabric-api`); the port step then treats them like newer jars ([docs/mod-browser.md](docs/mod-browser.md)).
-
-More: [#10262](https://github.com/horizon-rust/horizon/issues/10262)
-
-</details>
-
-#### A modpack's own resource and shader packs
-
-Imported modpacks carry their resource packs into a profile of their own. Shader-pack conversion is still pending.
-
-<details><summary>Technical</summary>
-
-Resource-pack carry-over is implemented locally: Modrinth common/client overrides, CurseForge's override folder, installed instances (ZIP and directory packs), and hash-checked indexed ZIP downloads. The launcher keeps profile edits and lets resource-only profiles play; packs are enabled in Resource Packs. Synthetic import and profile tests cover the file pipeline; in-game rendering has not been verified. Shader-pack conversion is still pending, so this combined item remains partial ([docs/modpacks.md](docs/modpacks.md)).
-
-</details>
-
-#### Whole modpacks, such as ATM10, rewritten
-
-Rewriting a complete big modpack for Horizon so it runs far better than the original. Not a priority now: the work above comes first.
-
-<details><summary>Technical</summary>
-
-The project's first goal for modpacks: support them ten times better than vanilla and port any of them. It was set aside in favour of compatibility through the browser. What exists: ATM10's world generates and 42 of its 496 mods are carried at least in part ([docs/modpacks.md](docs/modpacks.md)). It depends on 'Mods with code' and the native mod API.
-
-</details>
-
-#### Running Java mods that aren't rewritten
-
-Run Java mods that nobody has rewritten for Horizon yet, through a bridge or a converter. Hard and not started: the Convert button and native rewrites come first.
-
-<details><summary>Technical</summary>
-
-Earlier research ([#527](https://github.com/horizon-rust/horizon/issues/527), closed) found that Java mods can't simply run, because they call Minecraft's own classes. Option to look at again: a bridge for simple Fabric mods.
-
-</details>
-
-#### CurseForge in the mod browser (coming soon)
-
-Coming soon: search and download CurseForge mods and modpacks from the launcher, as you can with Modrinth today.
-
-<details><summary>Technical</summary>
-
-The mod browser lists CurseForge as coming soon ([docs/mod-browser.md](docs/mod-browser.md)): it needs CurseForge API access. Meanwhile packs import from a CurseForge zip or instance folder, and jars only CurseForge hosts come from the player's own instance ([docs/modpacks.md](docs/modpacks.md)).
-
-</details>
-
-#### A Convert to Rust button for what isn't rewritten yet
-
-When a mod, shader pack or modpack hasn't been rewritten for Horizon, one button converts what can be converted, so you don't have to wait for the rewrite.
-
-<details><summary>Technical</summary>
-
-Generalise the mod browser's Port step (`horizon-port-pack`: the data, assets, worldgen and block and item definitions of Java mods, .mrpack and CurseForge zips) to every kind of content: code mods as native mods (see 'Mods with code') and shader packs, converting an Iris/OptiFine pack into Horizon's format. The browser says what works before the install. Java code itself does not run ([docs/modpacks.md](docs/modpacks.md), [docs/mod-browser.md](docs/mod-browser.md)).
-
-</details>
-
-#### Mods with code: machines, magic, mobs
-
-Making mods that add machines, magic and mobs work in Horizon, in steps, starting with machines. They are most of what a big modpack is made of.
-
-<details><summary>Technical</summary>
-
-333 of the 496 mods in a big pack (ATM10) contain code. Issue [#1854](https://github.com/horizon-rust/horizon/issues/1854) ranks the gaps (ticking block entities, networking, rendering, menus, inventories) that unlock them in tiers, with machines first as the recommended path. Code mods are native mods now ([docs/native-mods.md](docs/native-mods.md)): each port is a horizon-mixins bundle. The path isn't started yet ([docs/modpacks.md](docs/modpacks.md)).
-
-</details>
-
-#### Data packs in the mod browser
-
-Search and install data packs from the launcher's mod browser, for the world you choose, as you do mods and resource packs.
-
-<details><summary>Technical</summary>
-
-A Datapacks tab beside Mods and Resource packs: install into a chosen world's datapacks folder, with the same checks and 'works in Horizon' notes as the other kinds ([docs/mod-browser.md](docs/mod-browser.md)).
-
-</details>
-
-### Servers and multiplayer
-
-#### Server panel extras and vanilla's management protocol
-
-More of a server managed from its web panel (bans, worlds, logs and crash reports, modpacks), and vanilla's own server-management tools working with a Horizon server.
-
-<details><summary>Technical</summary>
-
-The panel's later features (bans, worlds, server.properties import, logs and crash reports, modpacks) and vanilla's management protocol (the JSON-RPC over WebSocket that the `management-server-*` keys configure), so vanilla's tools can manage a Horizon server. Split from server-admin. [docs/server.md](docs/server.md), [docs/api/server.md](docs/api/server.md).
-
-</details>
-
-#### Ely.by and other sign-in providers
-
-Sign in with other account providers, such as Ely.by or any Yggdrasil-compatible one, beside Microsoft.
-
-<details><summary>Technical</summary>
-
-Issue [#1270](https://github.com/horizon-rust/horizon/issues/1270) asks for Ely.by and Yggdrasil-compatible servers with an account selector in the launcher. It builds on the Microsoft sign-in ([docs/microsoft-account.md](docs/microsoft-account.md)).
-
-</details>
-
-#### Join servers on older versions
-
-Join servers that run older Minecraft versions, such as 1.21 or 1.8 PvP servers, from Horizon.
-
-<details><summary>Technical</summary>
-
-Asked often in the suggestion queue. Horizon speaks 26.3's protocol; the path is a native protocol adapter in Rust that translates older versions' packets, not a downloaded Java proxy. Java instances in the launcher already play any version with the real game.
-
-More: [#3023](https://github.com/horizon-rust/horizon/issues/3023)
-
-</details>
-
-#### Online-mode checks for Play with Friends
-
-Friends who join through an invite code could prove who they are with their Microsoft account, as on online-mode servers.
-
-<details><summary>Technical</summary>
-
-Play with Friends joins over an encrypted tunnel with an invite code ([docs/play-with-friends.md](docs/play-with-friends.md), 'Identity'). Online-mode checks against Mojang's session servers can be added on top of the same tunnel; they need Microsoft sign-in first, which is coming soon. Play with Friends stays self-hosted between players, with no relay run by the project.
-
-</details>
-
-#### Prepare a version without Java
-
-Set up Horizon, a server first, without Java on your computer: published tables are combined with your own copy of the game.
-
-<details><summary>Technical</summary>
-
-Today `horizon-prepare` runs Mojang's exporters with Java. Issue [#1750](https://github.com/horizon-rust/horizon/issues/1750) proposes publishing the computed version tables once from CI and assembling the rest locally from the player's own jar and assets, provided the tables hold no Mojang content; a contributor offered a pull request, and it would help phones too. A server-only prepare from `server.jar` alone is the first step ([docs/server.md](docs/server.md)).
-
-</details>
-
-#### Guided hosting with Tailscale and an invite button
-
-In the launcher, a guide and a button to host a server and invite friends over Tailscale, so nobody has to open ports on a router.
-
-<details><summary>Technical</summary>
-
-On the Servers page (create, start, back up, update and invite are shipped) add a Tailscale setup that explains and checks each step, and an invite button that hands friends what they need to join over the tailnet. Buttons first, no docs needed, with the details in an Advanced section. Remote access over Tailscale is already described in [docs/server.md](docs/server.md).
-
-More: [docs/hosting.md](docs/hosting.md)
-
-</details>
-
-#### An official Docker image for servers
-
-An official image to run a Horizon dedicated server in Docker with one command, your own copy of the game files mounted in.
-
-<details><summary>Technical</summary>
-
-The repository has the Dockerfile (`packaging/server/Dockerfile`: a multi-stage build on Debian bookworm-slim, user `horizon`, volume `/data`, port 25565, game files mounted read-only, `HORIZON_EULA` and friends answering the first-start questions), and anyone can build it ([docs/hosting.md](docs/hosting.md), section 9). Left: publish the image to a public registry from the release workflow, tagged per release, so it follows the same checks, and update the docs and the launcher. The image never holds Mojang's files.
-
-More: [docs/server.md](docs/server.md)
-
-</details>
-
-#### A server you install with one command
-
-Install and run a Horizon dedicated server from a terminal with a single command, no launcher needed, for VPSes and headless machines.
-
-<details><summary>Technical</summary>
-
-A player's idea (#horizon-ideas). `horizon-server` already runs headless; left: an install script (Linux/macOS shell, Windows PowerShell) that fetches the signed release, checks it, asks for or points at the player's own game files and starts the server, documented in [docs/hosting.md](docs/hosting.md).
-
-</details>
-
-#### Ready-made setups for hosting panels
-
-Install a Horizon server from the panels hosts use, such as Pterodactyl and AMP, the usual way for each panel.
-
-<details><summary>Technical</summary>
-
-Asked in the suggestion queue for Pterodactyl eggs and AMP templates. Builds on the one-command install ('A server you install with one command') and horizon-server's server.toml ([docs/hosting.md](docs/hosting.md)).
-
-</details>
-
-### Mods and API
-
-#### Scripts for mods
-
-Small mods written as scripts, in the style of KubeJS, with no compiler.
-
-<details><summary>Technical</summary>
-
-Waits for native mods to settle: a script layer over the native hook points is to be designed.
-
-More: [docs/native-mods.md](docs/native-mods.md)
-
-</details>
-
-#### Orbital Laser on the normal game
-
-The community mod Orbital Laser, made for a fork of Horizon, running on the normal game as a native mod and listed in the registry.
-
-<details><summary>Technical</summary>
-
-A native port (a horizon-mixins bundle, docs/native-mods.md) of [https://github.com/Stink-O/orbital-laser](https://github.com/Stink-O/orbital-laser) (MIT), which today runs through its author's fork. Tested in the game, and listed in the registry.
-
-</details>
-
-#### Native versions of popular client mods
-
-Built-in versions of the client mods players ask for: block info on hover, a world map, inventory tweaks and schematic overlays.
-
-<details><summary>Technical</summary>
-
-Done: a mod list and menu, minimap, zoom, keystrokes, an FPS counter and a recipe viewer, as native mods (horizon-mods/native/). Asked for: an angled world map that shows hills, overhangs and caves, inventory tweaks (drag and scroll to move items), block info tooltips and schematic overlays.
-
-More: [docs/extras.md](docs/extras.md) · [docs/native-mods.md](docs/native-mods.md)
-
-</details>
-
-#### Create-style physics as a native mod
-
-Contraptions and physics like the Create and Aeronautics mods, as a mod for Horizon rather than part of the base game.
-
-<details><summary>Technical</summary>
-
-Issue [#805](https://github.com/horizon-rust/horizon/issues/805) (porting QOL mods) closed with this answer: it would come as a native Horizon mod.
-
-More: [#6302](https://github.com/horizon-rust/horizon/issues/6302) · [#5313](https://github.com/horizon-rust/horizon/issues/5313) · [#5556](https://github.com/horizon-rust/horizon/issues/5556)
-
-</details>
-
-#### Proximity voice chat as a native mod
-
-Hear nearby players talk, as with the voice chat mods of other Minecraft versions, as a Horizon mod.
-
-<details><summary>Technical</summary>
-
-A native mod ([docs/native-mods.md](docs/native-mods.md)). It needs a way to carry voice between players and an audio path in the game before anything can be built.
-
-</details>
-
-### Gameplay parity
-
-#### Every Minecraft version, prepared automatically
-
-Every past and future Minecraft version prepared for Horizon automatically. When Mojang releases one, Horizon follows it, and every system is checked against it again.
-
-<details><summary>Technical</summary>
-
-The port pipeline ([docs/version-ports.md](docs/version-ports.md), `tools/version_port.py`) detects a release, prepares it, diffs its classes against the pinned 26.3, regenerates the data-driven tables, runs every parity harness on it and writes a port report that becomes issues. The goal is as little human work as possible for any version, past or future. Detection and the first slices are merged; the scheduled agent that runs it every day isn't installed yet. Two versions in one build are out of scope.
-
-More: [#4758](https://github.com/horizon-rust/horizon/issues/4758)
-
-</details>
-
-#### Controllers: tested on real pads, and in the launcher
-
-Make controller support solid: tested with real PlayStation and Xbox pads and a Steam Deck, and usable in the launcher too.
-
-<details><summary>Technical</summary>
-
-The game side is merged ([docs/controllers.md](docs/controllers.md)): pads read with gilrs, menus, rumble, glyphs, remapping and DualSense adaptive triggers, lightbar and haptics, but not yet confirmed on real pads or a Steam Deck (DualSense haptics stay behind a switch until then). Left: a test pass on real hardware, and the same focus navigation in the GPUI launcher.
-
-More: [#10298](https://github.com/horizon-rust/horizon/issues/10298) · [#8678](https://github.com/horizon-rust/horizon/issues/8678)
-
-</details>
-
-#### The full debug screen
-
-Vanilla's complete F3 screen: debug options, a profiler chart, ten-second captures and an atlas dump.
-
-<details><summary>Technical</summary>
-
-Today F3 shows position, chunk, light, biome and FPS ([docs/native-client.md](docs/native-client.md)). Vanilla also has F3+F6 debug options with profiles, F3+1 the profiler pie, F3+L a ten-second capture and F3+S the atlas dump ([#562](https://github.com/horizon-rust/horizon/issues/562) asked for the F3 editor).
-
-</details>
-
-#### Pistons push players and mobs
-
-Pistons and slime blocks will push players, mobs and items as in vanilla. Today moving blocks pass through them.
-
-<details><summary>Technical</summary>
-
-Port `PistonMovingBlockEntity.moveCollidedEntities` and `moveStuckEntities` (honey), the slime bounce and `Entity.limitPistonMovement` for `MoverType.PISTON`, in single player and for a server's players. Issues [#1496](https://github.com/horizon-rust/horizon/issues/1496), [#1609](https://github.com/horizon-rust/horizon/issues/1609), [#1608](https://github.com/horizon-rust/horizon/issues/1608), [#1704](https://github.com/horizon-rust/horizon/issues/1704), [#1758](https://github.com/horizon-rust/horizon/issues/1758).
-
-</details>
-
-#### Villages and combat, exactly as in vanilla
-
-Villages and fights behaving as in vanilla: iron golems defending villages, villagers remembering their homes, mace smashes and knockback.
-
-<details><summary>Technical</summary>
-
-Villages: iron golem village goals, villager memories across saves, villager age, job-site claiming on dedicated servers, flower offers ([#1639](https://github.com/horizon-rust/horizon/issues/1639) is one report). Combat: the mobs' `attack_knockback` attribute, mace smash logic, the hit knockback source on the host, the fire burnout biome tag. Each is checked against vanilla by a harness ([docs/rust-parity.md](docs/rust-parity.md)).
-
-</details>
-
-#### Choose the audio output device
-
-Pick the speakers or headphones Horizon plays through, in Music & Sounds.
-
-<details><summary>Technical</summary>
-
-An output device list in Music & Sounds, falling back to the system default. [#1035](https://github.com/horizon-rust/horizon/issues/1035) started it: a player on an older Windows computer had no sound at all, and a device choice is how such cases are found and fixed.
-
-</details>
-
-### Rendering
-
-#### A light default shader pack
-
-A small built-in look (tone mapping, colour grade, a cheap vignette) that costs almost nothing, for players who want a nicer picture without a heavy pack.
-
-<details><summary>Technical</summary>
-
-An opt-in, composite-only pack on the native shader API, under about 0.3 ms at 1080p, shown on the Shader Packs page. Pack option sliders and profiles, and a Failed row with the full error, belong with it.
-
-More: [docs/shaders.md](docs/shaders.md)
-
-</details>
-
-#### Optional ray tracing
-
-An optional ray-tracing mode for graphics cards that support it (RTX and recent AMD): shadows, water reflections and global lighting on top of the vanilla look.
-
-<details><summary>Technical</summary>
-
-A spike with ray-traced sun shadows, off by default, is a draft ([#1180](https://github.com/horizon-rust/horizon/issues/1180)). Reflections, global illumination, Apple M3 and newer if it is cheap, and a performance report per card come after.
-
-</details>
-
-#### MSAA, anisotropic filtering, exclusive fullscreen
-
-More graphics options: multisample anti-aliasing, anisotropic filtering and an exclusive fullscreen mode. Today Horizon has FXAA and borderless fullscreen.
-
-<details><summary>Technical</summary>
-
-Not implemented ([docs/graphics.md](docs/graphics.md)). Anisotropic filtering needs linear magnification in wgpu, which blurs close blocks, so close-up sharpness has to be kept first; MSAA would sit beside FXAA, and SMAA or TAA are asked for too; exclusive fullscreen where the backend supports it.
-
-</details>
-
-#### Well-known shader looks, rewritten for Horizon
-
-Popular shader packs rewritten in Horizon's format, so good packs exist from the start. Only packs whose licence is open source and compatible with ours are rewritten, never anything else.
-
-<details><summary>Technical</summary>
-
-The first candidates are Photon, Chocapic13 and MakeUp Ultra Fast, each only after its licence is read and recorded: a pack is rewritten only if it is open source and compatible with Horizon's licence, and the rewrite is written from the shader format's documentation and the look on screen, not from anyone's code. Today only the Golden Hour example exists (`[crates/horizon-shader-api/packs/golden_hour](crates/horizon-shader-api/packs/golden_hour)`).
-
-More: [docs/shaders.md](docs/shaders.md)
-
-</details>
-
-### Launcher
-
-#### Lean installs that use less disk
-
-Smaller installs: Horizon keeps one shared copy of the prepared game files and removes what only the preparation needed.
-
-<details><summary>Technical</summary>
-
-A shared resource store keyed by the preparer's digest, no prepare intermediates left behind, the current and the previous version kept, and an automatic clean-up. Not started.
-
-</details>
-
-#### A launcher screen readers can read
-
-Screen readers read the launcher's buttons, lists and settings, and every part of it works from the keyboard.
-
-<details><summary>Technical</summary>
-
-Issue [#4537](https://github.com/horizon-rust/horizon/issues/4537): the launcher is GPUI (not Electron), so it exposes nothing to UI Automation, NSAccessibility or AT-SPI yet. Needs an accessibility tree from GPUI (an AccessKit bridge) and a role and label on each widget.
-
-</details>
-
-#### A visible beta label
-
-A clear 'beta' label in the launcher and the game, so nobody is surprised that Horizon is still being built.
-
-<details><summary>Technical</summary>
-
-Show Beta in the launcher's header and about page, on the game's title screen and on the website, beside the version number ([docs/versioning.md](docs/versioning.md)).
-
-</details>
-
-### Platforms
-
-#### Horizon on Linux ARM64
-
-Game and launcher builds for 64-bit ARM Linux computers.
-
-<details><summary>Technical</summary>
-
-Issue [#1709](https://github.com/horizon-rust/horizon/issues/1709): aarch64 builds of the game and the launcher in the release workflow, tested on a real ARM machine with its Vulkan driver. The server build already drops audio and controllers (`--no-default-features`).
-
-</details>
-
-#### The launcher builds Horizon on other systems
-
-On a system Horizon has no download for, such as FreeBSD, the launcher offers to build the game on your computer, as it already does for native mods.
-
-<details><summary>Technical</summary>
-
-Issue [#4354](https://github.com/horizon-rust/horizon/issues/4354): when no release asset matches the platform, the launcher fetches the tagged source and runs the same pinned-toolchain `cargo build --locked` its native-mod builds use, with a warning about the time it takes. The build is unsigned, so the launcher marks the version as built locally.
-
-More: [docs/native-mods.md](docs/native-mods.md)
-
-</details>
-
-#### Horizon on Windows ARM64
-
-A native Horizon for Windows on ARM computers, such as Snapdragon laptops.
-
-<details><summary>Technical</summary>
-
-Releases are x64 for Windows and Linux and arm64 for macOS. Needs an aarch64-pc-windows-msvc build in the release workflow and a machine to test on.
-
-More: [docs/release-flow.md](docs/release-flow.md)
-
-</details>
-
-#### Android, iOS and the browser
-
-Versions of Horizon for Android, iOS and web browsers. Nothing official yet; contributors have started the first pieces.
-
-<details><summary>Technical</summary>
-
-No official build. Android was first closed as not planned, with touch controls, a mobile interface, packaging and loading the player's own assets all missing; the roadmap now includes it, iOS and a build for the browser as long-term goals. First pieces from contributors: `horizon-dualsense` compiling on iOS ([#1813](https://github.com/horizon-rust/horizon/issues/1813)) and helper-thread limits on Android ([#1751](https://github.com/horizon-rust/horizon/issues/1751)). Preparing without Java ([#1750](https://github.com/horizon-rust/horizon/issues/1750)) matters here too. Horizon ships none of Mojang's files on any platform.
-
-More: [#9134](https://github.com/horizon-rust/horizon/issues/9134) · [#8069](https://github.com/horizon-rust/horizon/issues/8069) · [#4153](https://github.com/horizon-rust/horizon/issues/4153)
-
-</details>
-
-#### Horizon on Intel Macs
-
-Builds of the game and the launcher for Macs with an Intel processor.
-
-<details><summary>Technical</summary>
-
-x86_64 game and launcher builds, picked per processor ([#1171](https://github.com/horizon-rust/horizon/issues/1171)). Before it ships it needs a run on a real Intel Mac: Rosetta on Apple Silicon only proves the CPU code. Requests: [#1161](https://github.com/horizon-rust/horizon/issues/1161), [#1792](https://github.com/horizon-rust/horizon/issues/1792).
-
-</details>
-
-#### Wayland and Hyprland polish
-
-Fixes for Linux desktops that use Wayland and Hyprland: fullscreen, the clipboard, the GUI scale after a restart and the like.
-
-<details><summary>Technical</summary>
-
-Open: the GUI Scale is clamped to 2 after a restart under Hyprland, while XWayland keeps it ([#1866](https://github.com/horizon-rust/horizon/issues/1866)). Earlier reports covered fullscreen dropping on menu clicks, the clipboard and a white overlay ([#1007](https://github.com/horizon-rust/horizon/issues/1007), closed). Checked on a real Wayland session.
-
-</details>
-
-#### A Nix flake
-
-Install Horizon on NixOS through a Nix flake.
-
-<details><summary>Technical</summary>
-
-A player's idea (#horizon-ideas). The launcher's AppImage ships with each launcher release ([packaging/linux/appimage.sh](packaging/linux/appimage.sh)): one file with the libraries GPUI needs, which replaces itself when it updates. A flake.nix packaging the release binaries with their runtime libraries (Vulkan loader, X11/Wayland, ALSA) is still missing, the way horizon-parity's NixOS setup runs them today.
-
-</details>
-
-### Horizon extras
-
-#### A complete video studio inside the game
-
-Record, replay and edit videos without leaving the game: record in a keypress, replay a session, cut and finish the video. One of Horizon's original goals.
-
-<details><summary>Technical</summary>
-
-Three stages. Recording: capture gameplay in a keypress with an encoder thread and little frame-time cost. Replay: a replay mode for recorded sessions. Editing: cuts, camera paths, titles and export. None of it exists yet; the agent-control socket ([docs/agent-control.md](docs/agent-control.md)) already lets tools drive the game for scripted shots.
-
-More: [#10025](https://github.com/horizon-rust/horizon/issues/10025)
-
-</details>
-
-#### Game menus in the launcher's style
-
-An optional look for the game's own menus and options that matches the Horizon launcher. Off by default: the vanilla menus stay as they are.
-
-<details><summary>Technical</summary>
-
-A player's idea (#horizon-ideas). A built-in resource pack or a Horizon setting that restyles the title, pause and options screens with the launcher's design tokens (crates/horizon-theme), following [docs/design-system.md](docs/design-system.md); off by default because it changes the vanilla look.
-
-</details>
-
-### AI and agents
-
-#### An optional AI teammate
-
-An optional AI teammate you can talk to by voice. It plays beside you, helps or finishes the game with you, runs on your computer first, and exists only if you turn it on. The No AI switch hides it.
-
-<details><summary>Technical</summary>
-
-Draft pull requests: the companion ([#1068](https://github.com/horizon-rust/horizon/issues/1068)), its safety modes and their evaluation ([#1069](https://github.com/horizon-rust/horizon/issues/1069)) and a route that finishes the game ([#1070](https://github.com/horizon-rust/horizon/issues/1070)). In the drafts: a companion that follows, fights, mines, crafts, sleeps and respawns; chat and push-to-talk voice, with speech recognition and a choice of voices; presets (very strong, helper, beat the game); a guard model with Clean, Kid and Salty modes; perception levels from Fair to All-knowing; hardware detection with a simple mode and an Advanced tab; local models first, cloud keys optional. The No AI switch is already in the game. Left: the speedrun route doesn't finish the game reliably yet, voices for more languages, and the safety evaluation, which must pass before it ships.
-
-</details>
-
-#### A versioned agent-control protocol
-
-A stable, documented way for AI agents and scripts to drive the game and the launcher, with versions and an event stream so tools keep working as Horizon changes.
-
-<details><summary>Technical</summary>
-
-`hello` answers with the API version, the release and the features; `horizon-ctl --api`; MCP serverInfo; reply schemas generated into the reference; a `test.` namespace for hooks; transcript compatibility tests; `subscribe` as a stream of events on one connection; Horizon option files by key and saved-server commands. Agent control itself (`horizon-ctl`, both MCP servers, the No AI switch) is done: [docs/agent-control.md](docs/agent-control.md), [docs/api/agent-control.md](docs/api/agent-control.md).
-
-More: [docs/api/stability.md](docs/api/stability.md)
-
-</details>
-
-#### Port mods with your own AI agent
-
-You can port a mod to Horizon with your own AI agent on your own computer. Horizon documents how and gives you the tools, but provides no hosted agents.
-
-<details><summary>Technical</summary>
-
-A player runs their own agent locally with `horizon-ctl` and the MCP servers ([docs/agent-control.md](docs/agent-control.md)), `cargo horizon-mod`, `horizon-port-pack` and the parity harnesses as the check. Horizon writes the guide (playhorizon.dev/docs/agents, [docs/modpacks.md](docs/modpacks.md)) and runs no agents, accounts or keys for players. The No AI switch turns all of it off.
-
-More: [https://playhorizon.dev/docs/agents](https://playhorizon.dev/docs/agents)
-
-</details>
-
-### Community
-
-#### A video series about Horizon
-
-A series of videos about how Horizon is made and what is new, with each upload announced on Discord.
-
-<details><summary>Technical</summary>
-
-Kira already shows new uploads in a read-only Discord channel (done). The series follows each stage of the project: a script, edits, titles and a thumbnail per video.
-
-</details>
-
-#### Horizon on X (coming soon)
-
-Coming soon: an official Horizon account on X, used to announce releases and the weekly summary.
-
-<details><summary>Technical</summary>
-
-Kira already posts the roadmap items marked `announce = true` when they ship, and the weekly summary, as soon as the account's credentials exist ([roadmap/README.md](roadmap/README.md), 'The journal'). Waiting for the account itself.
-
-</details>
-
-### Code and tools
-
-#### Pipeline protection and a GitHub App for agents
-
-Safer releases: changes to the release machinery need the owner's review, and AI agents use a smaller identity of their own instead of a personal account.
-
-<details><summary>Technical</summary>
-
-`.github/CODEOWNERS` lists the workflows, the release and signing tools, the update-checking code and the installers ([#1015](https://github.com/horizon-rust/horizon/issues/1015)); the branch protection that makes it count waits for the `horizon-agent` GitHub App, which reads and writes code, pull requests and issues but can't change settings, workflows, secrets or members, and whose tokens last an hour. It needs the owner to create the App and switch the protection on ([docs/security.md](docs/security.md)).
-
-</details>
-
-#### Signed updates everywhere, installers included
-
-Every download Horizon makes is checked against the project's signature, including the first install with install.sh and install.ps1.
-
-<details><summary>Technical</summary>
-
-Releases carry signed checksums, and the launcher and `horizon-server update` refuse anything unsigned ([#1011](https://github.com/horizon-rust/horizon/issues/1011), [#1014](https://github.com/horizon-rust/horizon/issues/1014)). Left: the first install through `install.sh` and `install.ps1` still trusts only the checksum GitHub publishes, because verifying Ed25519 signatures needs OpenSSL 3, which macOS doesn't ship ([docs/security.md](docs/security.md)).
-
-More: [#10354](https://github.com/horizon-rust/horizon/issues/10354)
-
-</details>
-
-## Help wanted
-
-### Performance
-
-#### Benchmark your computer
-
-Run Horizon's built-in benchmark and share the report: every new computer makes the performance work more accurate. No coding needed.
-
-<details><summary>Technical</summary>
-
-`horizon-launcher play --arg=--benchmark --arg=standard` writes a JSON report; `horizon-launcher data benchmark <report>` shows what would be sent and uploads it (playhorizon.dev/docs/performance). Results from three installs with the same hardware appear on the Benchmarks page. Example: [#1711](https://github.com/horizon-rust/horizon/issues/1711).
-
-More: [https://playhorizon.dev/docs/performance](https://playhorizon.dev/docs/performance)
-
-</details>
-
-## Recently shipped
-
-- **Enchanted loot in End cities** (v0.2.73): Armour and tools in End city chests should come enchanted, as in vanilla. [#1437](https://github.com/horizon-rust/horizon/issues/1437) · [#1660](https://github.com/horizon-rust/horizon/issues/1660) · [#1911](https://github.com/horizon-rust/horizon/issues/1911) · [#2037](https://github.com/horizon-rust/horizon/issues/2037)
-- **End city banners keep their pattern** (v0.2.67): Banners in End cities show as plain magenta instead of with their pattern. [#1438](https://github.com/horizon-rust/horizon/issues/1438) · [#526](https://github.com/horizon-rust/horizon/issues/526) · [#1928](https://github.com/horizon-rust/horizon/issues/1928)
-- **Play in your language** (v0.2.65): Item names, container titles and server messages follow the language you pick, as in vanilla. Today parts of the game stay in English. [#1806](https://github.com/horizon-rust/horizon/issues/1806) · [#1594](https://github.com/horizon-rust/horizon/issues/1594) · [#1672](https://github.com/horizon-rust/horizon/issues/1672)
-- **Chickens flap while they fall** (v0.2.67): Chickens should flap their wings while they fall, not stand still in the air. [#1706](https://github.com/horizon-rust/horizon/issues/1706) · [#1892](https://github.com/horizon-rust/horizon/issues/1892)
-- **Ctrl+Backspace and scroll bars in menus** (v0.2.67): Ctrl+Backspace should delete a whole word in the creative search, and every list's scroll bar should be draggable. [#1764](https://github.com/horizon-rust/horizon/issues/1764) · [#1782](https://github.com/horizon-rust/horizon/issues/1782) · [#1884](https://github.com/horizon-rust/horizon/issues/1884) · [#1931](https://github.com/horizon-rust/horizon/issues/1931)
-- **A pointing hand over buttons** (v0.2.67): The mouse pointer should turn into a pointing hand over menu buttons, as in vanilla 26.3. [#1347](https://github.com/horizon-rust/horizon/issues/1347) · [#1897](https://github.com/horizon-rust/horizon/issues/1897)
-- **Chat settings and team prefixes** (v0.2.67): The Hidden and Commands Only chat settings should hide chat, and team prefixes should appear before names in chat. [#1376](https://github.com/horizon-rust/horizon/issues/1376) · [#1378](https://github.com/horizon-rust/horizon/issues/1378) · [#1932](https://github.com/horizon-rust/horizon/issues/1932) · [#1841](https://github.com/horizon-rust/horizon/issues/1841)
-- **Cooldowns drawn on items** (v0.2.67): After you throw an ender pearl, its slot should show the cooldown sweeping away, as in vanilla. [#1763](https://github.com/horizon-rust/horizon/issues/1763) · [#1933](https://github.com/horizon-rust/horizon/issues/1933)
-- **Pre-generate an area with /pregen** (v0.2.67): A /pregen command that builds an area of the world ahead of time, so players don't wait for new terrain when they explore. [#1805](https://github.com/horizon-rust/horizon/issues/1805)
-- **Horizon's own shader format and kit** (v0.2.70): Horizon's own way to make shader packs, with tools to write and test them. Every pack is checked before it runs, and the registry will list them. [#1820](https://github.com/horizon-rust/horizon/issues/1820) · [#1822](https://github.com/horizon-rust/horizon/issues/1822) · [#1861](https://github.com/horizon-rust/horizon/issues/1861) · [#1863](https://github.com/horizon-rust/horizon/issues/1863) · [#1855](https://github.com/horizon-rust/horizon/issues/1855) · [docs/shaders.md](docs/shaders.md) · [docs/api/shaders.md](docs/api/shaders.md)
-- **Discord Rich Presence** (v0.2.58): Your Discord profile can show that you are playing Horizon, with a switch to turn it off. [#1787](https://github.com/horizon-rust/horizon/issues/1787) · [#1788](https://github.com/horizon-rust/horizon/issues/1788)
-- **Server dialogs and login screens** (v0.2.67): Servers that show dialogs, such as the register and login screens of AuthMe, will work in Horizon. [#1720](https://github.com/horizon-rust/horizon/issues/1720) · [#1734](https://github.com/horizon-rust/horizon/issues/1734) · [#1735](https://github.com/horizon-rust/horizon/issues/1735)
-- **Microsoft sign-in** (launcher@0.2.17): Sign in with your Microsoft account in the launcher to play on online-mode servers. [docs/microsoft-account.md](docs/microsoft-account.md) · [#2879](https://github.com/horizon-rust/horizon/issues/2879)
-- **HDR monitors** (v0.2.74): Output for HDR monitors: brighter highlights and richer colour where your screen supports it. [#1441](https://github.com/horizon-rust/horizon/issues/1441) · [#2021](https://github.com/horizon-rust/horizon/issues/2021) · [#2292](https://github.com/horizon-rust/horizon/issues/2292)
-- **OpenGL for old computers** (v0.2.63): Horizon now starts on old PCs whose graphics card has no Vulkan or DirectX 12 driver: it switches to OpenGL by itself, and Options > Graphics can pick OpenGL by hand. [#1917](https://github.com/horizon-rust/horizon/issues/1917) · [#1920](https://github.com/horizon-rust/horizon/issues/1920) · [#1936](https://github.com/horizon-rust/horizon/issues/1936)
-- **Server resource packs** (v0.2.48): Servers can send you their resource pack: Horizon asks, downloads it and applies it, like vanilla. [#1562](https://github.com/horizon-rust/horizon/issues/1562) · [#1569](https://github.com/horizon-rust/horizon/issues/1569) · [#1570](https://github.com/horizon-rust/horizon/issues/1570)
-- **Single player on its own server thread** (v0.2.39): Single player runs on a server thread, as vanilla does, so the world keeps ticking smoothly while the window draws. [#1514](https://github.com/horizon-rust/horizon/issues/1514) · [docs/server-levels.md](docs/server-levels.md)
-- **GPU occlusion culling on Macs** (v0.2.17): On Macs the GPU now skips terrain hidden behind hills and caves: 8 to 48% more frames per second at 32 chunks on an M4 Pro. [#1434](https://github.com/horizon-rust/horizon/issues/1434)
-- **Animated textures on the GPU** (v0.2.5): Water, lava and other animated blocks are now animated by the graphics card: 1.7 to 2.4 times better 1% lows on Intel graphics. [#1239](https://github.com/horizon-rust/horizon/issues/1239)
-- **Far Detail for integrated graphics** (v0.2.5): An optional Reduced setting for far terrain, suggested on integrated graphics, that saves 2 to 4 ms of GPU time per frame. [#1199](https://github.com/horizon-rust/horizon/issues/1199) · [#1029](https://github.com/horizon-rust/horizon/issues/1029)
-- **The launcher's mod browser** (launcher@0.2.0): Search Modrinth for mods, modpacks and resource packs from the launcher; it says before installing what works in Horizon. [#1154](https://github.com/horizon-rust/horizon/issues/1154) · [#1242](https://github.com/horizon-rust/horizon/issues/1242) · [#1243](https://github.com/horizon-rust/horizon/issues/1243) · [#1246](https://github.com/horizon-rust/horizon/issues/1246) · [docs/mod-browser.md](docs/mod-browser.md)
-- **A blocky, Minecraft-like launcher** (launcher@0.2.0): The launcher got a new blocky look in Horizon's purple, in dark and light. [#1269](https://github.com/horizon-rust/horizon/issues/1269) · [docs/design-system.md](docs/design-system.md)
-- **Dynamic lights** (v2026.10.22): An optional extra: torches you hold, drop or set on fire light up what is around them. [#1162](https://github.com/horizon-rust/horizon/issues/1162)
-- **Host a server from the launcher** (launcher-v0.15.0): The launcher's Servers page creates, starts, backs up and updates a Horizon server with buttons, and invites friends. [#1026](https://github.com/horizon-rust/horizon/issues/1026) · [docs/hosting.md](docs/hosting.md)

THIRD_PARTY_NOTICES.md

@@ -1,214 +0,0 @@
-# Third-party notices
-
-## wgpu-hal
-
-`third_party/wgpu-hal` is [wgpu-hal](https://github.com/gfx-rs/wgpu) 30.0.1 by the gfx-rs
-developers, with upstream fixes applied
-([gfx-rs/wgpu#10124](https://github.com/gfx-rs/wgpu/pull/10124),
-[gfx-rs/wgpu#10714](https://github.com/gfx-rs/wgpu/pull/10714)). It is licensed under MIT or
-Apache-2.0; both licenses are in that folder (`LICENSE.MIT`, `LICENSE.APACHE`).
-
-## naga
-
-`third_party/naga` is [naga](https://github.com/gfx-rs/wgpu) 30.0.1 by the gfx-rs developers, with
-fixes to its GLSL frontend that shader packs need, each applied in the commit that needed it. It is licensed under MIT or Apache-2.0; both licenses
-are in that folder (`LICENSE.MIT`, `LICENSE.APACHE`).
-
-The GLSL frontend also resets the common type for each comma-separated declarator so one
-variable's array specifier does not change later variables.
-It also reads a struct member outside a constant expression through a pointer to the member,
-not out of a loaded copy of the whole struct, so a member an atomic function uses can be read.
-
-## libmimalloc-sys and mimalloc
-
-`third_party/libmimalloc-sys` is [libmimalloc-sys](https://github.com/purpleprotocol/mimalloc_rust)
-0.1.49 by Octavian Oncescu, with the [mimalloc](https://github.com/microsoft/mimalloc) v3 sources it
-bundles (Copyright (c) 2018-2025 Microsoft Corporation, Daan Leijen), both under the MIT license
-(`LICENSE.txt` and `c_src/mimalloc/v3/LICENSE` in that folder). It holds only the v3 sources. One
-change: `mi_popcount` in `include/mimalloc/bits.h` uses mimalloc's portable bit count on MSVC
-x86/x64 instead of the POPCNT instruction, which CPUs before Nehalem lack (#7264).
-
-## Pixelify Sans
-
-`crates/horizon-theme/fonts/PixelifySans-*.ttf` is [Pixelify Sans](https://github.com/eifetx/Pixelify-Sans)
-by The Pixelify Sans Project Authors, licensed under the SIL Open Font License 1.1
-(`crates/horizon-theme/fonts/OFL-PixelifySans.txt`).
-
-## Pixelarticons
-
-`crates/horizon-theme/icons/pixel/*.svg` are icons from
-[Pixelarticons](https://github.com/halfmage/pixelarticons) by Gerrit Halfmann, under the MIT
-license (`crates/horizon-theme/icons/pixel/LICENSE-pixelarticons.txt`). `star.svg` is Horizon's own, drawn on
-the same grid.
-
-## Hugeicons
-
-`crates/horizon-theme/icons/glass/*.svg` are icons from the free set of
-[Hugeicons](https://github.com/hugeicons/hugeicons) (`@hugeicons/core-free-icons` 4.4.0), under
-the MIT license (`crates/horizon-theme/icons/glass/LICENSE-hugeicons.txt`), exported with a 1.6
-stroke in `currentColor`.
-
-`crates/horizon-theme/icons/glass/discord.svg` is Discord's logo as drawn by
-[Simple Icons](https://github.com/simple-icons/simple-icons) 13.21.0 (CC0 1.0). The logo is Discord's
-trademark, used only on the button that opens Horizon's Discord server.
-
-## AMD FidelityFX SDK (FSR 3.1 frame generation)
-
-`crates/horizon-client-render/src/gfx/frame_gen/optical_flow.wgsl` and `interpolation.wgsl` are
-ports to WGSL of the optical flow and frame interpolation shaders of the
-[AMD FidelityFX SDK](https://github.com/GPUOpen-LibrariesAndSDKs/FidelityFX-SDK) 1.1.4
-(`sdk/include/FidelityFX/gpu/{opticalflow,frameinterpolation}`, at commit
-[c6efa6bf7f20](https://github.com/GPUOpen-LibrariesAndSDKs/FidelityFX-SDK/tree/c6efa6bf7f2027b3ec94f28578bb5965eabb9e55)),
-and `optical_flow.rs` follows the SDK's `sdk/src/components/opticalflow/ffx_opticalflow.cpp`
-(its passes, their order and their dispatch sizes). Copyright (C) 2024 Advanced Micro Devices,
-Inc., under the MIT license, whose text heads each file. AMD and FidelityFX are AMD's
-trademarks; Horizon is not affiliated with AMD.
-
-## Mod loader logos
-
-The launcher shows the logo of the mod loader an instance plays with, and offers the logos as
-instance icons.
-
-- `launcher/assets/logos/{fabric,quilt,neoforge,forge}.png` are the loaders' logos as the launcher
-  mockup on [playhorizon.dev/launcher](https://playhorizon.dev/launcher) shows them (horizon-site
-  `public/media/launcher/*.webp`, converted to PNG), each its project's own mark:
-  [Fabric](https://fabricmc.net/), [Quilt](https://quiltmc.org/) (its art is
-  [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/)),
-  [NeoForged](https://neoforged.net/) (its art, by Ridanisaurus, is
-  [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/)) and
-  [Minecraft Forge](https://minecraftforge.net/). They name the loader an instance runs.
-
-Each logo belongs to its project. Showing it says which loader an instance runs; it does not mean
-the project endorses Horizon.
-
-## Sign in with Microsoft
-
-The launcher's sign-in buttons follow Microsoft's published branding guidelines for apps that sign in
-with Microsoft accounts
-([Sign in with Microsoft branding](https://learn.microsoft.com/en-us/entra/identity-platform/howto-add-branding-in-apps)).
-The four-square Microsoft symbol in `launcher/src/microsoft.rs` reproduces the squares, positions and
-colours of Microsoft's official `ms-symbollockup_mssymbol_19.svg` from that page, unmodified. Microsoft
-and its logo are trademarks of the Microsoft group of companies; Horizon is not endorsed by Microsoft.
-
-## CIT Resewn
-
-`crates/horizon-optifine/src/cit.rs` and `crates/horizon-client-render/src/cit.rs` follow the
-condition semantics of [CIT Resewn Continuation](https://github.com/EthanVisagie/CIT-Resewn-Continuation-1.21.11)
-(at `b792f9a`), a continuation of [CIT Resewn](https://github.com/SHsuperCM/CITResewn) by SHsuperCM: the
-1.21 component paths, enchantment levels, percent damage, text matching and rule ordering. It is
-licensed under the MIT license:
-
-> Copyright (c) 2021 SHsuperCM
->
-> Permission is hereby granted, free of charge, to any person obtaining a copy of this software
-> and associated documentation files (the "Software"), to deal in the Software without
-> restriction, including without limitation the rights to use, copy, modify, merge, publish,
-> distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
-> Software is furnished to do so, subject to the following conditions:
->
-> The above copyright notice and this permission notice shall be included in all copies or
-> substantial portions of the Software.
->
-> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
-> BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-> NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-> DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-## FusionExamples
-
-The tile tables in `crates/horizon-optifine/src/fusion/layout.rs` were read off the connecting
-texture templates (`templates/template <layout>.png`) of
-[FusionExamples](https://github.com/SuperMartijn642/FusionExamples) (at `8c9c56e`), which is
-licensed under the MIT license:
-
-> Copyright (c) 2024 Martijn van den Brand
->
-> Permission is hereby granted, free of charge, to any person obtaining a copy of this software
-> and associated documentation files (the "Software"), to deal in the Software without
-> restriction, including without limitation the rights to use, copy, modify, merge, publish,
-> distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
-> Software is furnished to do so, subject to the following conditions:
->
-> The above copyright notice and this permission notice shall be included in all copies or
-> substantial portions of the Software.
->
-> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
-> BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-> NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-> DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-## BlueMap
-
-`crates/horizon-client-render/src/bluemap.rs` reads the lowres tiles of a server's
-[BlueMap](https://github.com/BlueMap-Minecraft/BlueMap) web map. It follows three of BlueMap's files:
-`core/src/main/java/de/bluecolored/bluemap/core/map/lowres/LowresLayer.java` (`saveTile`) for the
-tiles' pixel layout, `common/webapp/src/js/util/Utils.js` (`pathFromCoords`) for their paths, and
-`core/src/main/java/de/bluecolored/bluemap/core/map/MapSettingsSerializer.java` for a map's
-`settings.json`, at commit
-[96ae320d1d39](https://github.com/BlueMap-Minecraft/BlueMap/tree/96ae320d1d39581c10058d8222f2290f2fcb5333).
-BlueMap is licensed under the MIT license:
-
-> Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
-> Copyright (c) contributors
->
-> Permission is hereby granted, free of charge, to any person obtaining a copy
-> of this software and associated documentation files (the "Software"), to deal
-> in the Software without restriction, including without limitation the rights
-> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-> copies of the Software, and to permit persons to whom the Software is
-> furnished to do so, subject to the following conditions:
->
-> The above copyright notice and this permission notice shall be included in
-> all copies or substantial portions of the Software.
->
-> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-> THE SOFTWARE.
-
-## JOML
-
-`crates/horizon-client-render/src/camera.rs` (`joml::Mat4::rotation`, `invert_orthonormal`) and
-`crates/horizon-client-render/src/gfx/pack_uniforms.rs` (`invert_generic`, `invert_affine`, the
-formulas of `pack_projection` and `shadow_ortho`) adapt the float arithmetic of
-`Matrix4f.rotation(Quaternionfc)`, `invertOrthonormal`, `invertGenericNonThis`, `invertAffine`,
-`setPerspective` and `setOrtho` from
-[JOML](https://github.com/JOML-CI/JOML/tree/faf9eef2511242122beb6055fe3da92daed214c5) 1.10.9, the
-library vanilla 26.3 uses, so that shader packs get the same matrices to the last bit. Changes:
-ported to Rust; the pack_uniforms.rs functions drop JOML's property flags, and
-`pack_projection` works the formula in doubles. The copyright line and license notice also head
-both files.
-
-`camera.rs` also adapts `Quaternionf.rotationX`, `rotationY` and `rotationZ`,
-`Matrix4f.rotateAffine` and `Vector4f.mulAffine` (`joml::Quat::rotation_x`/`_y`/`_z`,
-`joml::Mat4::rotate_affine`, `transform_affine`), for the sky's positions shader packs read.
-Changes: ported to Rust; `rotate_affine` keeps only the affine case.
-
-```
-The MIT License
-
-Copyright (c) 2015-2026 Richard Greenlees
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-```

benchmarks/entity-model-document-2026-10-14/README.md

@@ -1,78 +0,0 @@
-# Entity model document loading
-
-The three startup batches (boats/chest boats, minecarts, armor stands/player armor)
-now share one parsed document. For this fixture, that replaces 43 full document
-reads/parses (boat discovery plus 42 selected layers) with one. Selected models
-still produce independent `Part` trees; the document is dropped after the batches
-are built. Other entity loaders retain their existing behavior.
-
-## Reproduce
-
-From the repository root:
-
-```sh
-python3 benchmarks/entity-model-document-2026-10-14/generate_fixture.py /tmp/horizon-entity-model-document-fixture.json
-ENTITY_MODEL_BENCH_DOCUMENT=/tmp/horizon-entity-model-document-fixture.json \
-  CARGO_TARGET_DIR=/home/bob/Documents/horizon/target \
-  cargo test -p horizon-client --profile fast --bin horizon-client \
-  entity_model_document_benchmark -- --ignored --nocapture
-```
-
-`CARGO_TARGET_DIR` is optional and can be changed for another machine. Supply a
-prepared `entity-models.json` through `ENTITY_MODEL_BENCH_DOCUMENT` to benchmark
-that document instead; the harness copies only that file to a temporary root.
-`ENTITY_MODEL_BENCH_REPETITIONS` controls repetitions (default 15).
-
-The opt-in Rust test calls the actual three optimized production loaders and
-compares every selected part name, pose, polygon normal/vertex and child against
-the previous algorithm using the compatible per-model `load_model` API. Timings
-include reading, parsing, constructing, normalizing into a common result map, and
-dropping the result. Each variant gets three warmups and 15 measured calls, with
-order alternating. `black_box` consumes inputs/results. No other builds or
-optimization benchmarks ran during the measured calls.
-
-## Input and limitations
-
-Prepared resources were unavailable in the repository and local Horizon asset
-directories. This is a **synthetic** 2,473,695-byte document with 458 model layers,
-each containing 12 posed parts with six exported quads and normals. It selects 22
-boat/chest-boat layers, six minecart layers and 14 armor/player layers (42 total).
-One wood name is synthetic (`test_wood`); boat discovery accepts arbitrary wood
-names. The extra layers model the cost of parsing a full production-size document
-for each selected model.
-
-File data is warm in the OS page cache. Equipment files are absent, so equipment
-texture loading is excluded. This measures the entity-model batch only and does
-not establish overall startup, frame time or FPS improvement. Shapes/layer counts
-in real prepared documents can produce different absolute timings.
-
-Machine: AMD Ryzen 5 5600X (6 cores / 12 threads), Linux x86_64,
-Rust 1.99.0 (b940084d7, LLVM 23.1.1), Cargo `fast` profile (opt-level 3,
-16 codegen units, no LTO). Baseline algorithm corresponds to main
-`73a019967e9665c6b96332988c13cb66679d8477`.
-
-## Results
-
-| Variant | Median batch time | Full document reads/parses |
-| --- | ---: | ---: |
-| Previous per-model algorithm | 1,434.974 ms | 43 |
-| Shared document | 33.420 ms | 1 |
-
-The measured batch is **42.94× faster** on this synthetic input. All 15 samples
-for both variants, warmup count, document size and selected model count are in
-[`results.json`](results.json).
-
-## Validation
-
-```sh
-cargo fmt --all -- --check
-CARGO_TARGET_DIR=/home/bob/Documents/horizon/target \
-  cargo test -p horizon-client --profile fast --bin horizon-client \
-  entity_model_loading_tests -- --nocapture
-CARGO_TARGET_DIR=/home/bob/Documents/horizon/target \
-  cargo clippy -p horizon-client --profile fast --lib --bin horizon-client --tests -- -D warnings
-```
-
-The regular tests cover full/sparse documents, unrelated layers, a missing file,
-invalid JSON, non-object JSON, missing model keys, independent model trees, and
-equipment loading when the document is unavailable.

benchmarks/entity-model-document-2026-10-14/generate_fixture.py

@@ -1,31 +0,0 @@
-"""Generate a production-size synthetic document; no prepared assets required."""
-import json
-import pathlib
-import sys
-
-woods = "oak spruce birch jungle acacia dark_oak mangrove cherry bamboo pale_oak test_wood".split()
-carts = "minecart chest_minecart hopper_minecart furnace_minecart tnt_minecart command_block_minecart".split()
-keys = [f"minecraft:{prefix}/{wood}#main" for prefix in ("boat", "chest_boat") for wood in woods]
-keys += [f"minecraft:{cart}#main" for cart in carts]
-keys += [f"minecraft:{model}#{slot}" for model in ("player", "armor_stand", "armor_stand_small")
-         for slot in ("helmet", "chestplate", "leggings", "boots")]
-keys += [f"minecraft:{model}#main" for model in ("armor_stand", "armor_stand_small")]
-
-face = [[0, 0, 0, 0, 0], [16, 0, 0, 1, 0], [16, 16, 0, 1, 1], [0, 16, 0, 0, 1]]
-part = {"pose": [1, 2, 3, 0.25, -0.5, 0.75, 1, 1, 1], "polygons": [face] * 6,
-        "normals": [[0, 0, 1]] * 6}
-model = {"pose": [0, 0, 0, 0, 0, 0, 1, 1, 1],
-         "children": {f"part_{i}": part for i in range(12)}}
-encoded = json.dumps(model, separators=(",", ":"))
-entries = [json.dumps(key) + ":" + encoded for key in keys]
-size = 2 + sum(map(len, entries)) + len(entries) - 1
-index = 0
-while size < 2_470_000:
-    entry = json.dumps(f"minecraft:fixture_{index}#main") + ":" + encoded
-    entries.append(entry)
-    size += 1 + len(entry)
-    index += 1
-output = pathlib.Path(sys.argv[1])
-output.write_text("{" + ",".join(entries) + "}")
-print(json.dumps({"path": str(output), "bytes": output.stat().st_size,
-                  "layers": len(entries), "selected_layers": len(keys)}))

benchmarks/entity-model-document-2026-10-14/results.json

@@ -1,43 +0,0 @@
-{
-  "baseline_median_ms": 1434.973835,
-  "baseline_ms": [
-    1400.008286,
-    1406.761694,
-    1408.9131360000001,
-    1418.6680549999999,
-    1419.149658,
-    1427.082872,
-    1433.088092,
-    1434.973835,
-    1449.7688150000001,
-    1452.143883,
-    1453.987998,
-    1455.518231,
-    1457.0334540000001,
-    1458.588552,
-    1485.34133
-  ],
-  "document_bytes": 2473695,
-  "optimized_median_ms": 33.419768000000005,
-  "optimized_ms": [
-    32.64795,
-    32.812732,
-    33.054488,
-    33.056914,
-    33.102999000000004,
-    33.23532,
-    33.28287,
-    33.419768000000005,
-    33.610569,
-    33.874749,
-    33.915657,
-    33.93877,
-    34.009893999999996,
-    34.550526,
-    36.096408000000004
-  ],
-  "repetitions": 15,
-  "selected_models": 42,
-  "speedup": 42.937875421516985,
-  "warmup_pairs": 3
-}

benchmarks/entity-occlusion/2026-11-02/README.md

@@ -1,42 +0,0 @@
-# Entity occlusion split measurements — 2026-11-02
-
-These measurements came from the pre-split integration branch for PR #7054. That build contained the entity-occlusion rewrite and particle light lookup cache; Particle Culling was Off. They are useful comparison evidence, but they are not a benchmark of this isolated entity-only commit. The cache-only run in PR #7391 measured effectively the same CPU time on the ordinary scene, but the combined result still cannot isolate interactions.
-
-Host: Intel Core i7-3770S, Intel HD Graphics 4000, Vulkan/Mesa, 675×727, render distance 4, VSync off, 260 FPS cap. Two opposite-order passes measured for 8 seconds after warmup. Values are means. CPU is harness average CPU ms per frame; p99 is frame time. The driver supplied no usable GPU timing.
-
-## Ordinary scene
-
-The scene had 24 mobs, roughly 9,400–10,100 rain particles and campfire smoke.
-
-| Build and mode | FPS | CPU ms/frame | Frame p99 ms |
-| --- | ---: | ---: | ---: |
-| Main, entity culling Off | 88.59 | 1.829 | 24.51 |
-| Pre-split integration branch, all culling Off | 88.33 | 2.063 | 24.51 |
-| Main, entity culling Synchronous | 89.34 | 1.965 | 23.99 |
-| Pre-split integration branch, entity Synchronous | 89.13 | 2.113 | 24.15 |
-
-This normal-scene run does not show a large FPS change; its CPU differences are small relative to frame time and not attributable to the entity-only change by themselves.
-
-## Opaque-wall scene
-
-A 32×32 platform at Y=300, a 7-block wall with a one-block vertical opening, and 192 pigs spawned behind the wall (216 mobs in the captured scene). The player looked toward the opening from the near side. The same world and camera path were used for the main and integration builds.
-
-| Build and mode | FPS | CPU ms/frame | Frame p99 ms |
-| --- | ---: | ---: | ---: |
-| Main, Off | 89.08 | 2.423 | 13.52 |
-| Integration branch, Off | 89.23 | 2.355 | 13.27 |
-| Main, Synchronous | 92.81 | 2.566 | 14.60 |
-| Integration branch, Synchronous | 93.21 | 2.550 | 12.84 |
-| Main, Asynchronous | 92.73 | 2.364 | 13.04 |
-| Integration branch, Asynchronous | 92.62 | 2.314 | 13.18 |
-
-The asynchronous mode reduced measured CPU time slightly in this wall scene but did not improve FPS beyond run-to-run spread. This is a synthetic occlusion-heavy scene, not a broad performance claim.
-
-## Captures
-
-The HUD performance overlay is visible in each capture. The integration-build screenshots were recorded with the same wall and camera position in Off, Synchronous, and Asynchronous modes.
-
-- Main, Off: `main-off.png`
-- Integration branch, Off: `branch-off.png`
-- Integration branch, Synchronous: `branch-sync.png`
-- Integration branch, Asynchronous: `branch-async.png`

benchmarks/entity-occlusion/2026-11-04-release-opengl/README.md

@@ -1,42 +0,0 @@
-# Entity occlusion pipeline — release/OpenGL run (2026-11-04)
-
-This is the final local smoke benchmark for the entity-occlusion pipeline before opening the PR. It was run from the branch after the release build completed, with the OpenGL backend selected explicitly. The same process created each scene, switched the culling mode, flew the camera for two seconds, collected frame/CPU telemetry, and captured the screenshot after the scene settled.
-
-**Host:** Intel Core i7-3770S, Intel HD Graphics 4000, Mesa OpenGL 4.2
-**Window:** 1280×720, offscreen, VSync disabled
-**World:** fresh temporary home, 32×32 platform at Y=300; wall scenes add a solid stone wall and an optional one-block slit
-**Entities:** 24 pigs in the normal scene, 192 pigs in wall scenes, 512 pigs in stress scenes
-**Settings:** render distance 8, `entityCullingPrecheck:64`, FPS overlay on, no resource-pack occlusion assumptions
-**Build:** `cargo build --release -p horizon-client`
-
-## Results
-
-The values below are branch-only measurements. They are useful for comparing the three modes under identical geometry and for checking that the worker is doing useful work. A fresh main binary was not built in this short pass, so these numbers do not claim a controlled main-to-branch delta.
-
-| Scene | Off FPS / CPU p50 | Sync FPS / CPU p50 | Async FPS / CPU p50 | Async entities culled |
-| --- | ---: | ---: | ---: | ---: |
-| `entity_normal` (24 visible) | 240.5 / 0.586 ms | 233.5 / 0.762 ms | 239.3 / 0.686 ms | 0 |
-| `entity_wall` (192, solid) | 228.8 / 1.245 ms | 318.6 / 1.342 ms | **324.5 / 0.478 ms** | 124,608 |
-| `entity_wall_slit` (192, one-block slit) | 231.4 / 1.102 ms | 265.0 / 1.387 ms | **281.2 / 0.716 ms** | 102,826 |
-| `entity_stress` (512, solid) | 190.3 / 2.467 ms | 299.2 / 2.593 ms | **325.5 / 0.691 ms** | 290,234 |
-| `entity_stress_slit` (512, one-block slit) | 190.4 / 2.476 ms | 262.2 / 2.573 ms | **262.1 / 1.297 ms** | 227,301 |
-
-Async telemetry confirmed that the render thread stayed non-blocking (`try_recv`/`try_send`, `worker_blocking_wait_ms: 0`). The latest wall/slit run completed 562 worker jobs, queued 3,982 queries, avoided about 4.0 million entity bytes, and had 379 ns recent p50 worker-job time. The solid 512-pig run culled 15,552 generated vertices; the slit run culled 120,290 generated vertices. The normal scene recorded no pre-model hides and kept the opt-in path close to Off.
-
-## Captures
-
-Every image includes the FPS performance overlay. The names are `<mode>-<scene>.png`:
-
-- [Off — normal](screenshots/off-entity_normal.png), [wall](screenshots/off-entity_wall.png), [wall slit](screenshots/off-entity_wall_slit.png), [stress](screenshots/off-entity_stress.png), [stress slit](screenshots/off-entity_stress_slit.png)
-- [Sync — normal](screenshots/sync-entity_normal.png), [wall](screenshots/sync-entity_wall.png), [wall slit](screenshots/sync-entity_wall_slit.png), [stress](screenshots/sync-entity_stress.png), [stress slit](screenshots/sync-entity_stress_slit.png)
-- [Async — normal](screenshots/async-entity_normal.png), [wall](screenshots/async-entity_wall.png), [wall slit](screenshots/async-entity_wall_slit.png), [stress](screenshots/async-entity_stress.png), [stress slit](screenshots/async-entity_stress_slit.png)
-
-## Reproduction
-
-From the repository root, with prepared 26.3 resources available:
-
-```sh
-python3 tools/entity_occlusion_bench.py
-```
-
-The script uses fresh temporary game data, the release binary in `target/release`, OpenGL, the FPS overlay, and writes JSON plus captures under `/tmp/horizon-entity-occlusion-release-quick/`.

benchmarks/graphics/after-4080.json

@@ -1,546 +0,0 @@
-{
-  "label": "after-4080",
-  "date": "2026-10-13",
-  "commit": "9006566b",
-  "host": "ludodesktop",
-  "offscreen": true,
-  "seed": "1234",
-  "flight_seconds": 12.0,
-  "scenes": {
-    "village": {
-      "from": [
-        -960.0,
-        125.0,
-        80.0
-      ],
-      "to": [
-        -960.0,
-        125.0,
-        272.0
-      ],
-      "pitch": 35.0
-    },
-    "forest": {
-      "from": [
-        -1100.0,
-        120.0,
-        -560.0
-      ],
-      "to": [
-        -1100.0,
-        120.0,
-        -368.0
-      ],
-      "pitch": 25.0
-    },
-    "ocean": {
-      "from": [
-        -300.0,
-        85.0,
-        -420.0
-      ],
-      "to": [
-        -300.0,
-        85.0,
-        -228.0
-      ],
-      "pitch": 10.0
-    },
-    "mountain": {
-      "from": [
-        560.0,
-        260.0,
-        860.0
-      ],
-      "to": [
-        752.0,
-        260.0,
-        860.0
-      ],
-      "pitch": 30.0
-    }
-  },
-  "distances": {
-    "8": {
-      "renderer": {
-        "backend": "Vulkan",
-        "drawn_sections": 133,
-        "gpu": "NVIDIA GeForce RTX 4080",
-        "present_mode": "Immediate",
-        "size": [
-          1280,
-          720
-        ],
-        "uploaded_bytes": 941908352
-      },
-      "village": {
-        "avg_fps": 2409.179688612205,
-        "cpu": {
-          "avg_ms": 0.41004928978864236,
-          "max_ms": 18.15971565246582,
-          "p50_ms": 0.2718150019645691,
-          "p95_ms": 0.7112299799919128,
-          "p99_ms": 1.316559076309204
-        },
-        "frames": 28910,
-        "gpu": {
-          "avg_ms": 0.09866036293994015,
-          "max_ms": 0.25088000297546387,
-          "p50_ms": 0.08806400001049042,
-          "p95_ms": 0.1740799993276596,
-          "p99_ms": 0.19968000054359436
-        },
-        "low_1pct_fps": 160.80638022914025,
-        "max_ms": 18.175312042236328,
-        "p50_ms": 0.2760099768638611,
-        "p95_ms": 0.7161250114440918,
-        "p99_ms": 1.4078609943389893,
-        "phases_avg_ms": {
-          "prepare": 0.20953580908804606,
-          "render": 0.12439006986512069,
-          "tick": 0.05299293669455945,
-          "update": 0.023244019639293335
-        },
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benchmarks/graphics/after-lavapipe.json

@@ -1,546 +0,0 @@
-{
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benchmarks/graphics/baseline-4080.json

@@ -1,392 +0,0 @@
-{
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benchmarks/graphics/baseline-lavapipe.json

@@ -1,392 +0,0 @@
-{
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-      }
-    }
-  }
-}

benchmarks/model-state-parse-2026-10-14.md

@@ -1,69 +0,0 @@
-# Reuse parsed model states
-
-`models::prepare` parsed `model-states.json` to select blocks, then
-`StateModels::load` reopened and parsed the same document for binding and baking.
-`StateModels::from_facts` now borrows the first parsed map. The public `load`
-entry point still reads, parses and validates its own document. Both paths retain
-the `fs::read` + `serde_json::from_slice` strategy merged in PR #205.
-
-The shared map uses `BTreeMap`, preserving the original catalog loader's JSON
-validation, including rejection of top-level `null`. The old selection map was
-`serde_json::Map`, also backed by a BTreeMap with the project's current features.
-Catalog binding, model selection and baking are unchanged. Preparation no longer
-holds a second complete JSON tree while constructing the catalog; no persistent
-cache or extra clones were added.
-
-## Measurement
-
-The committed `model_states_bench` example runs main's two-parse sequence after PR #205
-(first a serde JSON map, then `StateModels::load`) and the new one-parse sequence
-(first a BTreeMap, then `StateModels::from_facts`). Both select blocks from the
-same generated document with slice parsing and call the actual catalog binding/baking code. Timing
-includes file reads, parsing, filtering, binding, baking and result destruction.
-Fixture generation and equality checks run outside the timed region.
-
-Prepared Minecraft resources were unavailable locally, so this is a synthetic
-2,836,696-byte document containing 843 block schemas and 53,952 states. Schemas
-combine integer and named properties. Blockstate resources use weighted and
-conditional multipart choices with rotations and UV locking, sharing one model
-with a baked face. Its absent texture uses the normal missing-sprite fallback.
-Both paths read identical files with a warm OS cache. The workload does not
-represent the full diversity of production model and texture assets.
-
-On AMD Ryzen 5 5600X, Linux 7.2.8-zen1-2-zen x86_64, rustc 1.99.0
-(b940084d7 2026-09-28), Cargo `fast` profile, serial execution:
-
-| Path | Median (15 samples) |
-| --- | ---: |
-| Before: parse twice, with #205 slice readers | 96.080 ms |
-| After: reuse first parse, with #205 slice readers | 73.585 ms |
-
-**1.306x speedup; 23.41% less elapsed time** for this loading segment after PR #205. Each path
-has two warmups, sample order alternates, and inputs/results use `black_box`.
-This excludes gallery placements, GPU work and overall application startup.
-
-These measurements supersede the original unbuffered-reader timings
-(2732.004 ms → 1386.060 ms, 1.971x) after rebasing onto main at
-`e96e1571`. The reviewer measured approximately 1.05x with real prepared resources;
-the generated fixture's balance of parsing and binding differs from production.
-The change still removes one complete document read, parse and JSON tree.
-
-Equality validation compares every state's selected variants and baked geometry
-at three positions, plus sprite layers and opacity/translucency flags. The
-focused test also checks matching schema/registry errors, malformed/missing
-source files, rejection of `null`, and successful shared-facts loading after the
-source file has been deleted.
-
-## Reproduce
-
-```sh
-export CARGO_TARGET_DIR=/home/bob/Documents/horizon/target
-export CARGO_INCREMENTAL=0
-cargo run -p horizon-client --profile fast --example model_states_bench -- 15
-cargo test -p horizon-client --profile fast --example model_states_bench
-cargo clippy -p horizon-client --all-targets --profile fast -- -D warnings
-cargo fmt --all -- --check
-```
-
-The target directory can be changed for another machine. The example creates and
-removes its fixtures in the system temporary directory.

benchmarks/overlay-real-packs-2026-10-15.json

@@ -1,54 +0,0 @@
-{
-  "date": "2026-10-15",
-  "environment": "Linux x86_64/ext4/NVMe, Ryzen5 5600X, Rust1.99.0, Cargo fast",
-  "scope": "actual resource_root vs original wrapper/builder; warmed storage; output equivalence outside timing",
-  "warmups": 2,
-  "median_samples": 11,
-  "prepared_minecraft": "26.3",
-  "prepared_schema": 7,
-  "prepared_manifest_sha256": "fd03c686302748748e132ef3978b7b0bcf42024257e802985a5cc7175cc74298",
-  "packs": [
-    {
-      "project": "faithful-32x",
-      "version": "lDYpMiqk",
-      "version_name": "[26.3] Faithful 32x \u2013 September 2026 Release",
-      "publisher_page": "https://modrinth.com/resourcepack/faithful-32x/version/lDYpMiqk",
-      "download_url": "https://cdn.modrinth.com/data/w0TnApzs/versions/lDYpMiqk/Faithful%2032x%20-%2026.3.zip",
-      "zip_bytes": 13116019,
-      "zip_sha512": "e90ec63af7f239dbb99aa20c98b23d830e76898f65d3e31b7f0b53bb36db12dcd8c38d6930c743237c9c3db7bf708423fa1d1b2fd497dd6c281dbe216b779db9",
-      "asset_files": 5063,
-      "assets_uncompressed_bytes": 12524266,
-      "original_ms": 159.827,
-      "cold_ms": 162.711,
-      "hit_ms": 0.707
-    },
-    {
-      "project": "default-hd-128x",
-      "version": "rErHu3BE",
-      "version_name": "Default HD 128x Demo/Alpha 1.8.2.7",
-      "publisher_page": "https://modrinth.com/resourcepack/default-hd-128x/version/rErHu3BE",
-      "download_url": "https://cdn.modrinth.com/data/orfTV6nk/versions/rErHu3BE/Default%20HD%20128x%20Demo%201.8.2.7.zip",
-      "zip_bytes": 16876419,
-      "zip_sha512": "f5f9606e92b986cd9c8b8e5ff2bb52db720cc7b38e013355bdc90089e01975a08d09750ef2fd727f753d88ec3fbcd067355179b490587f667b2995f8be81640f",
-      "asset_files": 2318,
-      "assets_uncompressed_bytes": 17315416,
-      "original_ms": 111.501,
-      "cold_ms": 114.386,
-      "hit_ms": 0.31
-    },
-    {
-      "project": "fpbr",
-      "version": "dynf82xk",
-      "version_name": "support 1.21.9 and newer",
-      "publisher_page": "https://modrinth.com/resourcepack/fpbr/version/dynf82xk",
-      "download_url": "https://cdn.modrinth.com/data/nvEpbd8t/versions/dynf82xk/FPBR-Main-1.21.9-R1.3.zip",
-      "zip_bytes": 46737770,
-      "zip_sha512": "64f1bbd036e205118f1d9c49a79558db2c1356ee988fb939c0023db1967d78e1bd05047f341ce6d65355717ba7ddb1330af57edbb4d5b8713c96ae62987274c5",
-      "asset_files": 7001,
-      "assets_uncompressed_bytes": 56356903,
-      "original_ms": 347.639,
-      "cold_ms": 348.012,
-      "hit_ms": 0.448
-    }
-  ]
-}

benchmarks/particle-culling/2026-11-02/README.md

@@ -1,27 +0,0 @@
-# Particle culling review measurements — 2026-11-02
-
-Ordinary-scene captures and measurements for PR #7054. The scene contains 24 mobs, about 9,400–10,100 rain particles, and about 50–100 campfire smoke particles. Two opposite-order passes were run with 2 s warmup and 8 s measurement per condition. Host: Intel Core i7-3770S, Intel HD Graphics 4000, Vulkan/Mesa, 675×727, render distance 4, VSync off, 260 FPS cap.
-
-These are means of the two samples. CPU is the harness's average CPU time per frame; p99 is frame time. The normal scene is not expected to show large gains because most particles are visible.
-
-| Condition | FPS | CPU ms/frame | Frame p99 ms |
-| --- | ---: | ---: | ---: |
-| Main, culling Off | 88.39 | 1.930 | 23.85 |
-| Particle branch, culling Off | 88.55 | 1.828 | 24.88 |
-| Main, Entity Culling Synchronous | 89.12 | 1.887 | 23.07 |
-| Particle branch, Entity Culling Synchronous, Particle Culling Off | 89.06 | 1.897 | 25.18 |
-| Particle Culling Synchronous | 88.87 | 1.774 | 24.94 |
-| Particle Culling Asynchronous* | 89.00 | 1.754 | 24.90 |
-
-*The asynchronous samples predate the final switch to a dedicated particle worker. They are retained only as historical context and are not a measurement of the final worker implementation. No FPS improvement is claimed from these ordinary-scene runs. The Off path delegates directly to `render`; `disabled_culled_render_matches_the_regular_particle_path` checks that it produces the same vertices.
-
-The FPS and CPU differences are within run-to-run variability for this GPU-limited scene. The first four conditions are the reviewer's requested Main-versus-branch default and existing synchronous-mode comparisons. Particle Sync/Async rows are branch-internal mode comparisons.
-
-## Captures
-
-The screenshots show the same ordinary test world and FPS overlay:
-
-- `main-off.png`
-- `particle-off.png`
-- `particle-sync.png`
-- `particle-async.png`

benchmarks/perf/horizon-desktop-rd12.json

@@ -1,870 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-11-04T13:00:15Z",
- "app": {
-  "name": "horizon-client",
-  "version": "nightly-2026-11-04-67dad0d",
-  "commit": "67dad0d"
- },
- "hardware": {
-  "os": "linux",
-  "arch": "x86_64",
-  "cpu_threads": 24,
-  "os_version": "NixOS 26.05 (Yarara) (kernel 6.18.57)",
-  "cpu": "13th Gen Intel(R) Core(TM) i7-13700KF",
-  "ram_mb": 31904,
-  "gpu": {
-   "name": "NVIDIA GeForce RTX 4080",
-   "vendor": "nvidia",
-   "driver": "NVIDIA 595.71.05",
-   "backend": "vulkan",
-   "kind": "discrete"
-  }
- },
- "conditions": {
-  "scenario": "perf_bench:village,forest,ocean,mountain",
-  "seed": "1234",
-  "render_distance": 12,
-  "simulation_distance": 12,
-  "vsync": false,
-  "offscreen": false,
-  "repeats": 3,
-  "warmup_s": 2.0,
-  "load_avg_1m": 28.408,
-  "window": [
-   1280,
-   720
-  ]
- },
- "metrics": {
-  "startup.title_ms": {
-   "n": 3,
-   "mean": 66658.183,
-   "stdev": 61839.502,
-   "min": 1827.42,
-   "max": 124993.694,
-   "ci95": 153630.237
-  },
-  "startup.world_ms": {
-   "n": 3,
-   "mean": 74754.411,
-   "stdev": 59189.587,
-   "min": 13600.651,
-   "max": 131761.773,
-   "ci95": 147046.952
-  },
-  "chunks.village.load_ms": {
-   "n": 3,
-   "mean": 5571.499,
-   "stdev": 1900.32,
-   "min": 3378.38,
-   "max": 6730.394,
-   "ci95": 4721.037
-  },
-  "chunks.village.meshed_count": {
-   "n": 3,
-   "mean": 15287.0,
-   "stdev": 527.501,
-   "min": 14788.0,
-   "max": 15839.0,
-   "ci95": 1310.49
-  },
-  "fps.village.avg_fps": {
-   "n": 3,
-   "mean": 2958.557,
-   "stdev": 376.543,
-   "min": 2526.453,
-   "max": 3216.434,
-   "ci95": 935.46
-  },
-  "fps.village.low_1pct_fps": {
-   "n": 3,
-   "mean": 368.457,
-   "stdev": 90.668,
-   "min": 300.631,
-   "max": 471.438,
-   "ci95": 225.25
-  },
-  "fps.village.low_01pct_fps": {
-   "n": 3,
-   "mean": 91.04,
-   "stdev": 40.506,
-   "min": 46.124,
-   "max": 124.796,
-   "ci95": 100.63
-  },
-  "memory.village.gpu_mb": {
-   "n": 3,
-   "mean": 581.0,
-   "stdev": 48.0,
-   "min": 533.0,
-   "max": 629.0,
-   "ci95": 119.248
-  },
-  "memory.village.rss_mb": {
-   "n": 3,
-   "mean": 1277.531,
-   "stdev": 25.546,
-   "min": 1253.879,
-   "max": 1304.623,
-   "ci95": 63.466
-  },
-  "tick.village.client_ms": {
-   "n": 3,
-   "mean": 0.529,
-   "stdev": 0.127,
-   "min": 0.396,
-   "max": 0.649,
-   "ci95": 0.315
-  },
-  "cpu.village.p50_ms": {
-   "n": 3,
-   "mean": 0.185,
-   "stdev": 0.034,
-   "min": 0.162,
-   "max": 0.224,
-   "ci95": 0.085
-  },
-  "chunks.forest.load_ms": {
-   "n": 3,
-   "mean": 3318.3,
-   "stdev": 911.608,
-   "min": 2266.627,
-   "max": 3883.075,
-   "ci95": 2264.743
-  },
-  "chunks.forest.meshed_count": {
-   "n": 3,
-   "mean": 16565.333,
-   "stdev": 172.755,
-   "min": 16367.0,
-   "max": 16683.0,
-   "ci95": 429.182
-  },
-  "fps.forest.avg_fps": {
-   "n": 3,
-   "mean": 2333.626,
-   "stdev": 569.124,
-   "min": 1745.365,
-   "max": 2881.457,
-   "ci95": 1413.897
-  },
-  "fps.forest.low_1pct_fps": {
-   "n": 3,
-   "mean": 336.615,
-   "stdev": 185.666,
-   "min": 208.133,
-   "max": 549.487,
-   "ci95": 461.257
-  },
-  "fps.forest.low_01pct_fps": {
-   "n": 3,
-   "mean": 160.734,
-   "stdev": 127.586,
-   "min": 39.777,
-   "max": 294.05,
-   "ci95": 316.967
-  },
-  "memory.forest.gpu_mb": {
-   "n": 3,
-   "mean": 666.333,
-   "stdev": 24.44,
-   "min": 645.0,
-   "max": 693.0,
-   "ci95": 60.718
-  },
-  "memory.forest.rss_mb": {
-   "n": 3,
-   "mean": 1346.816,
-   "stdev": 42.279,
-   "min": 1305.547,
-   "max": 1390.037,
-   "ci95": 105.035
-  },
-  "tick.forest.client_ms": {
-   "n": 3,
-   "mean": 0.669,
-   "stdev": 0.084,
-   "min": 0.598,
-   "max": 0.761,
-   "ci95": 0.208
-  },
-  "cpu.forest.p50_ms": {
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-   "mean": 0.222,
-   "stdev": 0.032,
-   "min": 0.197,
-   "max": 0.258,
-   "ci95": 0.079
-  },
-  "chunks.ocean.load_ms": {
-   "n": 3,
-   "mean": 2463.434,
-   "stdev": 1056.0,
-   "min": 1527.516,
-   "max": 3608.283,
-   "ci95": 2623.462
-  },
-  "chunks.ocean.meshed_count": {
-   "n": 3,
-   "mean": 14226.667,
-   "stdev": 307.077,
-   "min": 14038.0,
-   "max": 14581.0,
-   "ci95": 762.883
-  },
-  "fps.ocean.avg_fps": {
-   "n": 3,
-   "mean": 2192.874,
-   "stdev": 1320.904,
-   "min": 673.829,
-   "max": 3071.415,
-   "ci95": 3281.573
-  },
-  "fps.ocean.low_1pct_fps": {
-   "n": 3,
-   "mean": 345.406,
-   "stdev": 294.904,
-   "min": 8.977,
-   "max": 559.232,
-   "ci95": 732.642
-  },
-  "fps.ocean.low_01pct_fps": {
-   "n": 3,
-   "mean": 172.573,
-   "stdev": 149.386,
-   "min": 1.038,
-   "max": 274.089,
-   "ci95": 371.125
-  },
-  "memory.ocean.gpu_mb": {
-   "n": 3,
-   "mean": 629.0,
-   "stdev": 32.0,
-   "min": 597.0,
-   "max": 661.0,
-   "ci95": 79.499
-  },
-  "memory.ocean.rss_mb": {
-   "n": 3,
-   "mean": 1352.223,
-   "stdev": 51.951,
-   "min": 1301.492,
-   "max": 1405.314,
-   "ci95": 129.065
-  },
-  "tick.ocean.client_ms": {
-   "n": 3,
-   "mean": 0.512,
-   "stdev": 0.099,
-   "min": 0.406,
-   "max": 0.603,
-   "ci95": 0.246
-  },
-  "cpu.ocean.p50_ms": {
-   "n": 3,
-   "mean": 0.178,
-   "stdev": 0.038,
-   "min": 0.135,
-   "max": 0.206,
-   "ci95": 0.094
-  },
-  "chunks.mountain.load_ms": {
-   "n": 3,
-   "mean": 6260.675,
-   "stdev": 3077.348,
-   "min": 2976.342,
-   "max": 9077.55,
-   "ci95": 7645.173
-  },
-  "chunks.mountain.meshed_count": {
-   "n": 3,
-   "mean": 16015.333,
-   "stdev": 209.872,
-   "min": 15826.0,
-   "max": 16241.0,
-   "ci95": 521.393
-  },
-  "fps.mountain.avg_fps": {
-   "n": 3,
-   "mean": 1412.095,
-   "stdev": 962.145,
-   "min": 714.773,
-   "max": 2509.775,
-   "ci95": 2390.293
-  },
-  "fps.mountain.low_1pct_fps": {
-   "n": 3,
-   "mean": 182.479,
-   "stdev": 177.563,
-   "min": 13.364,
-   "max": 367.429,
-   "ci95": 441.126
-  },
-  "fps.mountain.low_01pct_fps": {
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-   "mean": 88.451,
-   "stdev": 87.578,
-   "min": 1.526,
-   "max": 176.667,
-   "ci95": 217.572
-  },
-  "memory.mountain.gpu_mb": {
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-   "stdev": 18.475,
-   "min": 789.0,
-   "max": 821.0,
-   "ci95": 45.899
-  },
-  "memory.mountain.rss_mb": {
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-   "stdev": 36.719,
-   "min": 1459.775,
-   "max": 1531.76,
-   "ci95": 91.221
-  },
-  "tick.mountain.client_ms": {
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-   "mean": 0.697,
-   "stdev": 0.155,
-   "min": 0.602,
-   "max": 0.876,
-   "ci95": 0.386
-  },
-  "cpu.mountain.p50_ms": {
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-   "mean": 0.325,
-   "stdev": 0.115,
-   "min": 0.239,
-   "max": 0.456,
-   "ci95": 0.286
-  },
-  "memory.rss_peak_mb": {
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-   "mean": 1545.896,
-   "stdev": 30.591,
-   "min": 1524.965,
-   "max": 1581.004,
-   "ci95": 75.999
-  },
-  "memory.rss_steady_mb": {
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-   "mean": 1348.389,
-   "stdev": 52.5,
-   "min": 1296.172,
-   "max": 1401.168,
-   "ci95": 130.428
-  }
- },
- "frames": [
-  {
-   "phase": "village",
-   "repeat": 0,
-   "frames": 37594,
-   "seconds": 12.0,
-   "avg_fps": 3132.783,
-   "low_1pct_fps": 471.438,
-   "low_01pct_fps": 124.796,
-   "p50_ms": 0.271,
-   "p95_ms": 0.494,
-   "p99_ms": 1.127,
-   "p999_ms": 2.15,
-   "max_ms": 155.204,
-   "cpu_p50_ms": 0.168,
-   "gpu_p50_ms": 0.104,
-   "histogram": [
-    37151,
-    394,
-    30,
-    8,
-    5,
-    2,
-    2,
-    0,
-    0,
-    0,
-    0,
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-  },
-  {
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-   "repeat": 1,
-   "frames": 38598,
-   "seconds": 12.0,
-   "avg_fps": 3216.434,
-   "low_1pct_fps": 300.631,
-   "low_01pct_fps": 46.124,
-   "p50_ms": 0.267,
-   "p95_ms": 0.446,
-   "p99_ms": 1.034,
-   "p999_ms": 1.941,
-   "max_ms": 493.993,
-   "cpu_p50_ms": 0.162,
-   "gpu_p50_ms": 0.104,
-   "histogram": [
-    38177,
-    387,
-    16,
-    8,
-    4,
-    3,
-    0,
-    0,
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-    1,
-    1,
-    0,
-    0
-   ]
-  },
-  {
-   "phase": "village",
-   "repeat": 2,
-   "frames": 30318,
-   "seconds": 12.0,
-   "avg_fps": 2526.453,
-   "low_1pct_fps": 333.302,
-   "low_01pct_fps": 102.199,
-   "p50_ms": 0.305,
-   "p95_ms": 0.757,
-   "p99_ms": 1.69,
-   "p999_ms": 3.539,
-   "max_ms": 170.856,
-   "cpu_p50_ms": 0.224,
-   "gpu_p50_ms": 0.106,
-   "histogram": [
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-    759,
-    139,
-    35,
-    11,
-    3,
-    2,
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-    0
-   ]
-  },
-  {
-   "phase": "forest",
-   "repeat": 0,
-   "frames": 34578,
-   "seconds": 12.0,
-   "avg_fps": 2881.457,
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benchmarks/perf/horizon-desktop-rd32.json

@@ -1,870 +0,0 @@
-{
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- "version": 1,
- "kind": "game",
- "created": "2026-11-04T14:47:19Z",
- "app": {
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-  "commit": "67dad0d"
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-   "backend": "vulkan",
-   "kind": "discrete"
-  }
- },
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benchmarks/perf/horizon-m4pro-1080p-rd16.json

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-{
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-   "vendor": "",
-   "driver": "",
-   "backend": "metal",
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benchmarks/perf/horizon-m4pro-1080p-rd32.json

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-{
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- "created": "2026-11-01T23:17:23Z",
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-  "gpu": {
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-   "vendor": "",
-   "driver": "",
-   "backend": "metal",
-   "kind": "integrated"
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benchmarks/perf/horizon-m4pro-1080p-rd8.json

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-{
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-  "gpu": {
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-   "vendor": "",
-   "driver": "",
-   "backend": "metal",
-   "kind": "integrated"
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- },
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benchmarks/perf/horizon-macmini-rd12.json

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-{
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-  "ram_mb": 65536,
-  "gpu": {
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-   "vendor": "",
-   "driver": "",
-   "backend": "metal",
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benchmarks/perf/horizon-macmini-rd32.json

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-{
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-  "ram_mb": 65536,
-  "gpu": {
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-   "vendor": "",
-   "driver": "",
-   "backend": "metal",
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benchmarks/perf/horizon-win-9800x3d-5080-rd16.json

@@ -1,773 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-10-29T01:13:01Z",
- "app": {
-  "name": "horizon-client",
-  "version": "v0.2.97",
-  "commit": null
- },
- "hardware": {
-  "os": "windows",
-  "arch": "x86_64",
-  "cpu_threads": 16,
-  "os_version": "Microsoft Windows [Version 10.0.26200.8037]",
-  "cpu": "AMD Ryzen 7 9800X3D 8-Core Processor",
-  "ram_mb": 95943,
-  "gpu": {
-   "name": "NVIDIA GeForce RTX 5080",
-   "vendor": "nvidia",
-   "driver": "NVIDIA 617.42",
-   "backend": "vulkan",
-   "kind": "discrete"
-  }
- },
- "conditions": {
-  "scenario": "perf_bench:village,forest,ocean,mountain",
-  "seed": "1234",
-  "render_distance": 16,
-  "simulation_distance": 12,
-  "vsync": false,
-  "offscreen": false,
-  "repeats": 3,
-  "warmup_s": 2.0,
-  "window": [
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-   720
-  ]
- },
- "metrics": {
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-   "min": 3023.046,
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benchmarks/perf/horizon-win-9800x3d-5080-rd32.json

@@ -1,773 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-10-29T18:55:59Z",
- "app": {
-  "name": "horizon-client",
-  "version": "v0.2.97",
-  "commit": null
- },
- "hardware": {
-  "os": "windows",
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benchmarks/perf/horizon-win-9800x3d-5080-rd8.json

@@ -1,773 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-10-29T18:37:03Z",
- "app": {
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-  "commit": null
- },
- "hardware": {
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-  "cpu_threads": 16,
-  "os_version": "Microsoft Windows [Version 10.0.26200.8037]",
-  "cpu": "AMD Ryzen 7 9800X3D 8-Core Processor",
-  "ram_mb": 95943,
-  "gpu": {
-   "name": "NVIDIA GeForce RTX 5080",
-   "vendor": "nvidia",
-   "driver": "NVIDIA 617.42",
-   "backend": "vulkan",
-   "kind": "discrete"
-  }
- },
- "conditions": {
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-  "seed": "1234",
-  "render_distance": 8,
-  "simulation_distance": 12,
-  "vsync": false,
-  "offscreen": false,
-  "repeats": 3,
-  "warmup_s": 2.0,
-  "window": [
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- "metrics": {
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benchmarks/perf/macmini-m4pro-loaded-2026-11-01.md

@@ -1,68 +0,0 @@
-# Horizon main vs vanilla 26.3 on a loaded Mac mini M4 Pro (2026-11-01)
-
-`tools/perf_bench.py` reports for Horizon main 1bd24e4042, vanilla 26.3 and vanilla with performance mods, render distances
-8, 16 and 32, three games each, every game from a fresh world. **These are not player numbers:** the Mac mini was running other
-work the whole time (1-minute load average 15-114 on 14 cores), and every game rendered without presenting. They are kept because
-they're the first Mac reports and show how each game behaves under heavy CPU contention. The reports are the
-`*-m4pro-1080p-rd*.json` files next to this page.
-
-## Setup
-
-- **Machine:** Mac mini, Apple M4 Pro (10 performance + 4 efficiency cores, 20-core GPU), 64 GB, macOS 27.0.1. Screen
-  1920x1080; the session was locked, so every game ran `offscreen` (Horizon renders into a texture; vanilla draws into a
-  window nobody sees).
-- **Horizon:** main 1bd24e4042, `cargo build --release -p horizon-client`, Metal.
-- **Vanilla:** the 26.3 client jar with Fabric Loader and the driver mod, Java 25 (Temurin), `-Xmx2G` with the launcher's G1
-  flags, OpenGL 4.1 (Apple's Metal-backed driver).
-- **Vanilla + mods:** the same with Sodium mc26.3-0.9.2, Lithium mc26.3-0.26.2, FerriteCore 9.0.0, ImmediatelyFast 1.17.1 and
-  Fabric API (`tools/benchmark-deps/mods.lock.json`).
-- **Order:** the games took turns inside each repeat (vanilla, mods, Horizon; then mods, Horizon, vanilla; then Horizon, vanilla,
-  mods), one game at a time.
-
-## Why these numbers aren't a fair comparison
-
-- **Load.** Load before each game: RD 8 46-82, RD 16 43-114, RD 32 15-59 (the later RD 32 games ran at 15-30). Horizon raises its
-  render and server threads to the user-interactive QoS class, and the JVM's threads stay at the default, so under this
-  contention macOS runs Horizon's frame first. Vanilla's 1% lows of 2-15 FPS show that, more than how fast either game is.
-- **Resolution.** Vanilla's 1920x1080 window was shrunk to **1920x930** by the 1080p screen (menu and title bars); Horizon,
-  offscreen, rendered 1920x1080. Vanilla drew 14% fewer pixels, which favours it in GPU-bound scenes. Because the recorded
-  windows differ, `perf_bench.py --table` refuses to compare these reports. The tables below were made with the window check
-  skipped. A rerun at a size that fits the screen (1600x900) would avoid it.
-
-## Results
-
-Mean of 3 games ± 95% confidence interval. FPS over the 12-second flight (average / 1% low / 0.1% low):
-
-| RD | scene | Horizon main | Vanilla 26.3 | Vanilla + mods |
-| --- | --- | --- | --- | --- |
-| 8 | forest | 364 ±22 / 145 ±54 / 97 ±38 | 66 ±22 / 8 ±10 / 6 ±8 | 47 ±42 / 4 ±2 / 3 ±1 |
-| 8 | mountain | 466 ±7 / 165 ±54 / 91 ±37 | 46 ±37 / 5 ±7 / 4 ±6 | 67 ±35 / 8 ±5 / 4 ±4 |
-| 8 | ocean | 410 ±88 / 161 ±39 / 112 ±41 | 50 ±44 / 6 ±13 / 5 ±11 | 35 ±16 / 5 ±4 / 4 ±4 |
-| 8 | village | 540 ±453 / 196 ±189 / 135 ±184 | 42 ±16 / 4 ±3 / 3 ±0 | 33 ±46 / 4 ±6 / 3 ±4 |
-| 16 | forest | 333 ±4 / 193 ±29 / 137 ±71 | 23 ±9 / 2 ±1 / 2 ±1 | 62 ±94 / 10 ±21 / 7 ±14 |
-| 16 | mountain | 357 ±6 / 200 ±30 / 154 ±33 | 44 ±12 / 7 ±2 / 4 ±1 | 36 ±44 / 4 ±5 / 3 ±5 |
-| 16 | ocean | 412 ±4 / 209 ±26 / 127 ±44 | 51 ±16 / 6 ±8 / 4 ±7 | 75 ±159 / 13 ±33 / 7 ±16 |
-| 16 | village | 568 ±30 / 271 ±25 / 210 ±75 | 46 ±110 / 9 ±27 / 7 ±17 | 46 ±45 / 7 ±9 / 5 ±4 |
-| 32 | forest | 165 ±11 / 104 ±51 / 95 ±60 | 68 ±122 / 18 ±49 / 14 ±42 | 114 ±132 / 29 ±44 / 21 ±34 |
-| 32 | mountain | 190 ±5 / 109 ±35 / 91 ±32 | 29 ±19 / 3 ±2 / 2 ±3 | 57 ±49 / 7 ±2 / 3 ±3 |
-| 32 | ocean | 210 ±13 / 129 ±77 / 116 ±98 | 44 ±80 / 5 ±4 / 2 ±1 | 119 ±176 / 32 ±66 / 17 ±37 |
-| 32 | village | 326 ±17 / 152 ±85 / 123 ±84 | 81 ±99 / 15 ±20 / 11 ±11 | 92 ±28 / 13 ±6 / 9 ±3 |
-
-Start to title / in-world, mean scene load, RSS steady / peak, physical footprint steady / peak (macOS `footprint`, which on Apple
-Silicon includes the game's GPU allocations), load average before the first game:
-
-| RD | Horizon main | Vanilla 26.3 | Vanilla + mods |
-| --- | --- | --- | --- |
-| 8 | 7.2 / 11.4, 6.5, 1379 / 1537, 1883 / 2094, 73 | 49.9 / 89.1, 18.2, 1811 / 1877, 2635 / 2709, 66 | 56.3 / 97.7, 17.9, 1927 / 2019, 2396 / 2441, 74 |
-| 16 | 1.5 / 14.0, 9.5, 1617 / 1892, 2495 / 3084, 114 | 19.4 / 78.9, 33.3, 2431 / 2555, 3450 / 3713, 76 | 23.8 / 76.9, 27.1, 2355 / 2566, 3212 / 3431, 70 |
-| 32 | 2.2 / 14.3, 11.1, 2196 / 2537, 4373 / 5560, 28 | 20.6 / 124.2, 44.2, 2838 / 2958, 4265 / 4618, 59 | 13.5 / 63.2, 29.9, 3705 / 4078, 4647 / 5250, 37 |
-
-## What it shows
-
-- Horizon is GPU-bound on the M4 Pro in every scene at every distance: its median GPU time per frame is 1.6-2.5 ms at RD 8 and
-  2.9-5.7 ms at RD 32, its render thread's CPU time 0.6-2.2 ms.
-- In the least-loaded RD 32 games (load 15-22), vanilla + mods matched Horizon's average FPS over the forest (162 vs 163-170) and
-  the ocean (187 vs 209-216); Horizon's 1% lows were 2.4 times the modded client's there, and 15-17 times over the village and the
-  mountain.
-- Horizon's resident memory is 1.2-1.7 times smaller than both clients'. Its physical footprint, GPU memory included, is level
-  with vanilla's at RD 32 (4373 vs 4265 MB steady) and above it at peak (5560 vs 4618 MB).

benchmarks/perf/site-2026-11-04.md

@@ -1,42 +0,0 @@
-# Horizon Nightly 2026-11-04 vs vanilla 26.3 on the Mac mini and the desktop (2026-11-04)
-
-> **The Mac mini reports (`*-macmini-rd*.json`) are offscreen, not comparable.** Horizon rendered offscreen (no presenting)
-> while vanilla drew into a window, so the Mac rows below are not a Horizon-vs-vanilla comparison, and the website does not
-> publish them: it keeps the Mac mini's 2026-10-22 runs. They are kept here only as a record of that day's offscreen run.
-
-The desktop runs are the ones behind playhorizon.dev/benchmarks as of 2026-11-04 (horizon-rust/horizon-site#58): `tools/perf_bench.py`
-reports, render distance 12 and 32, three games each, every game from a fresh world (seed 1234), 1280x720, VSync off. Files:
-`{horizon,vanilla}-macmini-rd{12,32}.json` and `{horizon,vanilla}-desktop-rd{12,32}.json` next to this page.
-
-## Builds
-
-- **Horizon:** the Nightly 2026-11-04 release bundle (67dad0d), as the launcher installs it: macOS arm64 on the Mac,
-  Linux x86_64 on the desktop. Its resources come from the bundle's own `horizon-prepare`. perf_bench ran from main
-  a55b9a2e52 and wrote that checkout's crate version and commit; `app.version` and `app.commit` were set to the bundle's by hand.
-- **Vanilla:** the 26.3 client jar with Fabric Loader and the driver mod, Java 25, the official launcher's JVM flags.
-
-## Machines and conditions
-
-- **Mac mini, Apple M4 Pro (14 cores, 20-core GPU), macOS: offscreen, not comparable.** The session was locked, so Horizon ran `--offscreen`: a locked
-  session gives a window no frames, and windowed Horizon measured 0 FPS. Vanilla drew into its window. Offscreen skips
-  presenting, which favours Horizon, so its averages aren't held at the 144 Hz display as they were on 2026-10-22. Each game
-  started at a 1-minute load of 17-18 (the run waited for < 20); during the runs the load rose to 30-50.
-- **Desktop, RTX 4080 + i7-13700KF, NixOS, NVIDIA 595.** Both games drew into a headless sway rendering on the RTX 4080 (never
-  on its screen), both through Wayland on Vulkan. Vanilla went through SDL's Wayland driver: through Xwayland each of its
-  frames took about 2 s on this day. The machine also runs CI and agents' builds: each game started at a load of 28-30 on
-  24 threads (the run waited for < 30) and the load rose to 40-70 during the runs. Vanilla at RD 32 crashed twice under that
-  load (`GPU timeout attempting to acquire next frame`) before a third series finished. Start-up times are inflated by the
-  load and by a cold disk on each series' first start (start → world up to 130-235 s).
-- **Order:** RD 12 ran Horizon then vanilla; RD 32 ran vanilla then Horizon.
-
-## Results (average over the flights of the three games; FPS average / 1% low)
-
-| Machine | RD | Horizon | Vanilla | Horizon ÷ vanilla (avg, 1% low) |
-|---|---|---|---|---|
-| Mac mini (**offscreen, not comparable**) | 12 | 774 / 294 | 132 / 27 | — |
-| Mac mini (**offscreen, not comparable**) | 32 | 297 / 159 | 68 / 16 | — |
-| Desktop | 12 | 2,224 / 308 | 1,824 / 201 | 1.2x, 1.5x |
-| Desktop | 32 | 800 / 140 | 696 / 64 | 1.15x, 2.2x |
-
-Neither machine was idle, so these say how both games behave on busy machines. They are not clean ratios; for those, see
-`windows-9800x3d-5080-2026-10-29.md`. The scripts and logs are in horizon-parity `shots/site-bench-2026-11-04/`.

benchmarks/perf/vanilla-desktop-rd12.json

@@ -1,787 +0,0 @@
-{
- "format": "horizon-benchmark-report",
- "version": 1,
- "kind": "game",
- "created": "2026-11-04T13:28:55Z",
- "app": {
-  "name": "minecraft",
-  "version": "26.3",
-  "mods": [
-   {
-    "name": "fabric-loader",
-    "version": "0.19.5"
-   }
-  ]
- },
- "hardware": {
-  "os": "linux",
-  "arch": "x86_64",
-  "cpu_threads": 24,
-  "os_version": "NixOS 26.05 (Yarara) (kernel 6.18.57)",
-  "cpu": "13th Gen Intel(R) Core(TM) i7-13700KF",
-  "ram_mb": 31904,
-  "gpu": {
-   "name": "NVIDIA GeForce RTX 4080",
-   "vendor": "NVIDIA",
-   "driver": "1.4.329 NVIDIA 595.71.05",
-   "backend": "vulkan",
-   "kind": ""
-  }
- },
- "conditions": {
-  "scenario": "perf_bench:village,forest,ocean,mountain",
-  "seed": "1234",
-  "render_distance": 12,
-  "simulation_distance": 12,
-  "vsync": false,
-  "offscreen": false,
-  "repeats": 3,
-  "warmup_s": 2.0,
-  "load_avg_1m": 28.788,
-  "window": [
-   1280,
-   720
-  ]
- },
- "metrics": {
-  "startup.title_ms": {
-   "n": 3,
-   "mean": 121075.467,
-   "stdev": 30646.429,
-   "min": 93272.034,
-   "max": 153935.834,
-   "ci95": 76136.094
-  },
-  "startup.world_ms": {
-   "n": 3,
-   "mean": 191063.8,
-   "stdev": 34368.16,
-   "min": 153895.533,
-   "max": 221692.034,
-   "ci95": 85382.134
-  },
-  "chunks.village.load_ms": {
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-   "mean": 18724.322,
-   "stdev": 9639.048,
-   "min": 13107.549,
-   "max": 29854.376,
-   "ci95": 23946.655
-  },
-  "fps.village.avg_fps": {
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-   "mean": 2161.532,
-   "stdev": 287.109,
-   "min": 1830.069,
-   "max": 2332.81,
-   "ci95": 713.276
-  },
-  "fps.village.low_1pct_fps": {
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-   "mean": 162.575,
-   "stdev": 29.799,
-   "min": 136.023,
-   "max": 194.804,
-   "ci95": 74.03
-  },
-  "fps.village.low_01pct_fps": {
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-   "mean": 27.752,
-   "stdev": 3.186,
-   "min": 24.403,
-   "max": 30.746,
-   "ci95": 7.916
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-  "memory.village.gpu_mb": {
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-   "max": 13.0,
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-   "stdev": 530.809,
-   "min": 8350.811,
-   "max": 9408.241,
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-  "fps.forest.avg_fps": {
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-   "stdev": 1186.781,
-   "min": 471.209,
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-   "stdev": 217.128,
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-  "fps.forest.low_01pct_fps": {
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