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9 Commits
Author SHA1 Message Date
d065467cd3 feat(zerogit): auto-create a conventional branch before push/pr on default branch (#671)
* feat(zerogit): auto-create a conventional branch before push/pr on default branch

zero changes push/pr refused to push straight to the default branch but
never offered an alternative, unlike other agent tooling that names and
checks out a feature branch automatically. Add CreateBranch, IsDefaultBranch,
CurrentGitUser, and branch-name slugify/build helpers to zerogit, and wire
push/pr to auto-create a "<user>/<slug>" branch (slug from an LLM when a
provider is configured, otherwise a deterministic fallback from the diff)
whenever the current branch is the default one and --yes/--dry-run weren't
passed.

* fix(zerogit): normalize LLM branch slugs, bound remote lookup, handle existing branches

Address CodeRabbit's review on the auto-branch-naming PR:

- generateAutoBranchSlug now takes the first non-empty, quote-trimmed
  line of the model's response before slugifying, instead of folding
  any preamble or wrapping quotes into the branch name.
- isDefaultBranch's ls-remote lookup is now bounded by a 5s timeout so
  a slow or unreachable remote can't stall push/pr; falls back to the
  local main/master heuristic as before.
- CreateBranch checks whether the target branch already exists locally
  and checks it out instead of failing checkout -b on the collision.

Also add regression coverage: CurrentGitUser's OS-username fallback
tier, CreateBranch's existing-branch and generic checkout-failure
paths, a CLI-level test for changes pr (previously untested) mirroring
the existing changes push coverage, and a messy-LLM-response case for
the slug normalization fix.

* fix(zerogit,cli): make auto-branching collision-safe, remote-aware, fail-closed, and opt-in for LLM naming

- CreateBranch never checks out an existing branch on a name collision: it
  picks a unique suffixed name off the current HEAD (name-2 .. name-9) and
  fails visibly when the namespace is exhausted, so a stale branch with
  unrelated history can no longer be published while the new commit stays
  behind on the default branch.
- ensureFeatureBranch resolves the remote once (explicit --remote, then the
  original branch's configured upstream, then origin) via IsDefaultBranch,
  which now reports the resolved remote, and push/pr thread that remote into
  Push, so a freshly created branch without tracking configuration no longer
  falls back to origin in fork setups.
- The default-branch check fails closed: main and master count as default
  with no network, an unreachable remote falls back to the local
  refs/remotes/<remote>/HEAD record, and when neither answers the push is
  refused with guidance instead of silently dropping the confirmation guard
  for repositories whose default is trunk or develop.
- LLM branch naming is now opt-in via --auto on push/pr, matching commit
  --auto: a configured provider alone no longer causes the change diff to be
  uploaded during ordinary git-only pushes.
- After the ordinary commit-then-push sequence the tree is clean, so the
  fallback name comes from the HEAD commit subject instead of the constant
  user/changes.

* style(zerogit): align fake-runner result comments to gofmt output

* test(zerogit): cover Push's fail-closed path when the default branch is unknown

* fix(zerogit): keep a stale cached remote HEAD from clearing the push guard

When the live ls-remote default-branch lookup fails, isDefaultBranch fell
back to the local refs/remotes/<remote>/HEAD cache and returned
branch == cachedName. That cache is only a hint: if the server renamed its
default (main -> trunk) the record still names main, so checking whether
pushing trunk is safe returned false and the newly protected branch was
pushed without --yes.

Trust the cache only to block a push (a positive match proves the branch is
the recorded default); on a mismatch fall through to the existing
fail-closed unknown-default error instead of treating the branch as
unprotected.

* fix(cli): honor --diff-bytes when inspecting the diff for auto-branch naming

changes push/pr accept and document --diff-bytes, but ensureFeatureBranch
inspected the working tree with only Cwd set. With --auto the resulting
unbounded diff was embedded in the branch-name request to the provider, so a
user who capped the diff to limit how much proprietary source is uploaded
for naming still sent the complete diff.

Thread options.maxDiffBytes through ensureFeatureBranch into InspectOptions,
matching how the commit path already bounds the diff.

* fix(cli): refuse an auto-branch push when HEAD has nothing to publish

The auto-branch path decided to branch solely from working-tree status and
never checked that HEAD was ahead of the default branch. On a clean,
up-to-date default branch it would create and push user/<subject> at the
exact default tip; with only uncommitted edits it named a branch from those
edits but pushed the unchanged HEAD, leaving the edits local, and changes pr
then abandoned the empty branch before the host rejected the comparison.

Add zerogit.CommitsAhead and consult it before branching: when HEAD is
provably not ahead of <remote>/<default>, report "no changes to publish"
instead of creating the branch. An indeterminate count (for example a
remote-tracking ref that was never fetched) is treated as "cannot tell" so a
legitimate first push is not blocked.

* fix(cli): recover the branch slug from preamble or fenced LLM replies

The slug helper returned the first non-empty line verbatim, so a reply like
"Here is a suggested branch name:\nadd-login-page" produced
user/here-is-a-suggested-branch-name, and a reply wrapped in a code fence
slugified the ``` line to nothing and silently fell back to the local name.

Drop Markdown code-fence lines and prefer a line that already reads as a
kebab-case slug, falling back to the first quoted/plain line only when no
slug-shaped line exists. Cover preamble and fenced responses with tests.

* fix(zerogit): harden auto-branch remote handling

Three review findings:

- isDefaultBranch passed the remote to ls-remote before the HEAD
  positional with no --, so a remote value shaped like an option
  (--upload-pack=/bin/echo) was parsed as one. Terminate options with --
  and cover a dash-prefixed remote.

- An unborn remote (freshly created, zero refs) answered ls-remote with
  empty output, fell through to the fail-closed unknown-default error,
  and made the very first feature-branch push a --yes dead end that
  git remote set-head --auto cannot repair. ls-remote succeeding with no
  refs now counts as proof there is no protected default; main/master
  stay guarded by the name heuristic and every failure path stays
  fail-closed.

- CreateBranch probed only local refs/heads for collisions, so a branch
  existing only on the target remote (an old merged-PR branch) was
  silently fast-forwarded by the later push -u. The target remote's
  heads are now probed once (bounded, with --) and count as taken;
  an unreachable remote fails visibly before anything is created.

Co-Authored-By: Claude Fable 5 <[email protected]>

* fix(zerogit): close branch-naming and push safety gaps from review

Require a confirmed unborn HEAD, not just an empty ls-remote --symref,
before granting the first-push exception, since a dangling remote
HEAD looked the same. Resolve branch naming and ahead-count checks
against the remote branch instead of a working-tree snapshot, which
could describe uncommitted edits a commit-only push would never
publish. Guard concurrent branch creation with a force-with-lease
push. Scope the ls-remote timeout to the default-branch preflight
only, so it no longer caps Push's own unrelated check.

* fix(cli): require a clean tree before auto-branch push/pr

Refuse ensureFeatureBranch when the working tree is dirty or the
ahead count against the remote default cannot be determined, so a
default-branch push cannot leave uncommitted edits behind or publish
an empty comparison under a guessed name.

* fix(zerogit): drop fixed five-second remote lookup timeout

IsDefaultBranch and CreateBranch applied a hard 5s bound on ls-remote,
so ordinary feature-branch pushes and the collision probe failed on slow
but reachable remotes (SSH/VPN) before Push could run. Honor the
caller's context instead; callers that need a bound pass a deadline.

* fix(cli): bypass the ahead-count and diff-base checks on a confirmed-unborn remote

jatmn flagged that the confirmed-unborn-remote exception this PR added to
IsDefaultBranch never actually helps the main/master case it was written
for: when the local branch is named main, isDefaultBranch returns true from
the name heuristic before it ever consults the remote, so
ensureFeatureBranch still unconditionally calls commitsAhead against
<remote>/<branch>. On a genuinely empty remote that ref cannot exist, so
`zero changes push`/`pr` from a local default branch against a brand-new
empty remote still dead-ended with "cannot determine whether HEAD is
ahead of origin/main" - the exact bug this PR set out to fix.

Tracing the flow further, the same problem also hit the diff-base Inspect
call right after: it uses the same nonexistent <remote>/<branch> ref, so
bypassing only commitsAhead would have left the dead end one line later.

ensureFeatureBranch now probes the new zerogit.IsUnbornRemote (ls-remote
--heads on the remote) whenever commitsAhead fails, and only bypasses both
checks when that probe positively confirms the remote has no refs at all.
An unreachable remote, or one that answers with refs, still fails closed
exactly as before - the fail-closed "unknown default branch" behavior is
unchanged and covered by TestEnsureFeatureBranchFailsWhenAheadCountUnknown
and the new TestEnsureFeatureBranchFailsWhenUnbornCheckErrors.

TestEnsureFeatureBranchCreatesBranchOnConfirmedUnbornRemote is the
regression test: confirmed failing (with the exact dead-end error) against
the pre-fix logic, passing after.

* fix(zerogit): resolve main/master against the live remote default first

isDefaultBranch short-circuited on the literal branch names main/master
before ever consulting the remote. A repository whose remote default is
genuinely something else (e.g. trunk) could still have a local main branch
tracking that remote, and the shortcut wrongly treated it as protected
instead of trusting the live symref result. The conventional-name check
now only applies as a last-resort fallback, after both the live ls-remote
symref lookup and the local remotes/<remote>/HEAD cache fail to answer.

* fix(cli): preserve push lease on retry and check the live default ref

Two related gaps in ensureFeatureBranch's auto-branch preflight:

- When an auto-branch push loses a force-with-lease race against a
  concurrent creator, the generated branch is left checked out locally
  with no successful push behind it. A retry took the "already off the
  default branch" early return and dropped RequireNewRemoteBranch,
  letting the next push silently fast-forward whatever the concurrent
  creator published. The lease now stays required unless the branch
  already has a configured upstream (proof a push already landed).

- The ahead-of-default check compared HEAD against the local
  remote-tracking ref, which is only refreshed at clone or the last
  fetch. A stale ref can under-report how far ahead HEAD is, or say
  zero when the remote has actually moved past it, so ensureFeatureBranch
  now refreshes that tracking ref before trusting it, and fails closed
  if the refresh itself cannot be confirmed.

Adds regression coverage for both: a retry after a lease collision keeps
requiring the lease (and an already-published branch does not), and a
stale tracking ref is refreshed before the ahead check runs (with a
fail-closed case when that refresh cannot be confirmed).

* fix(cli): track generated branches, reject PR on unborn remote, classify main on unborn

* fix(zerogit,cli): preserve explicit nonexistence lease on force, propagate marker write errors, check unborn remote before branch switch

* fix(zerogit): preserve non-existence lease on target remote and roll back failed branch marking

Compare target remote against configured upstream remote to retain non-existence lease on target, roll back created branch if marking fails, and allow --yes to bypass PR default-branch preflight.

Refs #671

* fix(cli): address review findings for auto feature branch creation

* fix(cli): refine LLM preamble candidate slug extraction and enforce unborn-remote guard

* fix(cli): restore default branch after auto-branch and resolve --yes upstream

Do not leave auto-branch commits on the protected local default branch,
and resolve the real upstream for the unborn-remote guard under --yes
instead of always probing origin.

* test(cli): assert auto-branch passes capped diff into the provider

Thread --auto and a mock provider through DiffBytes coverage so the
cap is checked on the real LLM request path, not only Inspect.

* fix(cli): block auto-branch on unborn remotes and fix lease/restore

Refuse auto-creating a feature branch when the target remote has no refs yet.
Publishing only user/slug leaves remote HEAD dangling, so the next changes pr
fails closed and a later main push has no PR diff. Require push --yes first.

Keep the nonexistence lease unless branch@{upstream} is exactly the target
remote/generated-branch ref from a successful push -u. Inherited origin/main
from branch.autoSetupMerge=inherit must not drop the lease.

Restore the original default branch against its own upstream tip, not the
push destination, so --remote upstream does not rewrite a fork main that
tracks origin/main.

* fix(cli): recover push -u upstream and filter LLM slug preambles

Push -u can publish a remote branch then fail to write local upstream
config. Treat that as incomplete, recover with set-upstream-to, and probe
the remote before reasserting the nonexistence lease on retry. Also skip
one-word LLM acknowledgements before accepting a slug-shaped line.

Refs #671

* fix(cli): decide the branch-collision lease with one live remote check

Replace the local-state inference chain (upstream config, a
zeroAutoBranch marker, per-remote provenance tracking) that kept
producing new collision-safety edge cases across many review rounds
with a single live remoteHasBranch check against the destination
remote: missing there gets the nonexistence lease, already there gets
a plain push, and git's own fast-forward check is the safety net if
that existing branch isn't actually ours.

Removes MarkGeneratedBranch/IsGeneratedBranch, now dead, along with
the tests that pinned the specific local-state heuristics rather than
the collision-safety property itself.

* fix(cli,zerogit): address CodeRabbit findings on auto-branch naming

Recover trailing-punctuation LLM slugs, notice deterministic fallback,
report dual restore/rollback failures, and skip Push upstream repair on
dry-run. Align comments with fail-closed and DryRun behavior.

Refs #671

* fix(tools): set explicit stdin reader and use resolved binary for format-on-write

Use the binary path resolved by exec.LookPath and set formatter.Stdin
to an empty reader so format-on-write does not hang on inherited stdin
handles on Windows.

Refs #671

* fix(cli,zerogit,tools): address CodeRabbit review findings on PR 671

Remove redundant command validation, eliminate duplicate remote lookup in PR
workflow, harden ref options and branch switching, isolate test Git
environment, and add formatter lookup test.

Refs #671

* fix(cli,zerogit): address new CodeRabbit review findings on PR 671

Harden CreateBranch name validation, remove unreachable workflow error check,
complete doc comment, isolate test Git environment, and clean up unused
appDeps field.

Refs #671

* fix(cli,zerogit,tools): address third round of CodeRabbit review findings on PR 671

Use featureBranchOptions struct for ensureFeatureBranch, bound preflight
contexts, add upstream repair mismatch subtest, and centralize test Git
config isolation.

Refs #671

* fix(cli,zerogit): finish ensureFeatureBranch doc contract and close review gaps

The ensureFeatureBranch doc comment ended mid-sentence and sat on the featureBranchOptions type, so go doc attached function prose to the struct. Move it above the function and state which deps are required non-nil (inspectChanges, commitsAhead, headCommitSubject, currentGitUser, createBranch) versus optional and nil-guarded (refreshTrackingRef, isUnbornRemote, branchUpstreamRef, resetBranchRef, deleteBranch). Also extract the branch slug filename with path.Base because git paths are always slash-separated, gate two tests on the git version their fixtures need (autoSetupMerge=inherit requires 2.35, init --bare -b requires 2.28), and cover the literal "user" CurrentGitUser fallback via a test seam.

Refs #671

Co-Authored-By: cairn-code <[email protected]>

* Protect auto-branch publication and default ref restoration

Co-Authored-By: cairn-code <[email protected]>

* fix(cli): wire expected-old restore through the dependency seam

The P1 fix added expectedOld to resetBranchRef but left the appDeps field and the workflows.go import behind, so the CLI package did not compile. Update the field type to the 5-argument signature and restore the filepath import used by worktree release resolution.

Co-Authored-By: cairn-code <[email protected]>

* fix(cli,zerogit): wire CAS tip and close review test gaps

Addresses the CodeRabbit round on 93e3448e: fillAppDeps now defaults currentBranchTip so the compare-and-swap old value actually reaches ResetBranchRef in production; TestEnsureFeatureBranchRestoresDefaultBranchAfterCreate asserts the CAS value; the real-git auto-branch test asserts local main is restored to its upstream tip; docs explain the deliberate context.Background push, CurrentBranchTip semantics, the RemoteHasBranch tip-equality ownership check, and the Git 2.24 requirement for CommitsAhead; CreateBranch gains name-validation subtests.

Co-Authored-By: cairn-code <[email protected]>

* fix(zerogit): make RemoteHasBranch report existence only, not tip equality

RemoteHasBranch's tip-equality check made ensureFeatureBranch reassert the
nonexistence lease (--force-with-lease=<branch>:) on every push after the
first: a second local commit puts HEAD ahead of the just-published remote
tip, so the check reported false for a branch that plainly exists, and Git
rejected the follow-up push with a stale-info error instead of a normal
fast-forward.

The concurrent-creator race the tip check was meant to guard was already
handled one layer up: ensureFeatureBranch drops to a plain push when the
branch exists and relies on Git's own fast-forward check as the safety net
(see TestRunChangesPushDropsLeaseWhenBranchExistsOnRemote), so a race
survivor with unrelated history is rejected there regardless of tip
equality here.

Add TestRemoteHasBranchReportsTrueForDivergedTip, which fails under the old
tip-equality check and passes now.

Refs #671

* fix(cli,zerogit): preserve the generated branch on a compare-and-swap conflict

After auto-branching, ensureFeatureBranch restores the default branch to its
own upstream tip using the compare-and-swap form of update-ref. When that
refused because the default branch had moved concurrently, the failure was
indistinguishable from an ordinary update-ref write error, so the rollback
path ran and deleted the freshly created feature branch. That branch
exclusively owns the user's commits at that point, so a lost race destroyed
work in order to "recover" from it.

Add ErrCompareAndSwapConflict, returned by ResetBranchRef only when an
expected-old value was supplied (the sole way git refuses is a tip mismatch).
ensureFeatureBranch now recognizes it and returns without rolling back,
reporting that the branch was preserved so the user can reconcile the default
branch by hand.

Extend TestResetBranchRefRefusesConcurrentDefaultAdvance, which already drove
a real concurrent advance, to require the sentinel. Add
TestEnsureFeatureBranchPreservesBranchOnCompareAndSwapConflict, which fails
with "must not delete the generated branch" when the new branch is removed.

Refs #671

* Address review feedback for auto-branch workflow.

Refresh the exact configured upstream ref before branching and restoring, guard direct URL and path remote destinations from tracking-ref assertion, and remove undeclared --end-of-options from CommitsAhead.

Refs #671

* fix(zerogit,cli): resolve reviewer feedback on branch restoration and remote handling

Update CommitsAhead and ResetBranchRef to safely terminate option parsing with --, inspect all linked worktrees before ref updates, resolve advertised branches on direct path and URL remotes, and query git configuration directly for tracking remote and merge branch without splitting on slashes.

Refs #671

* fix(zerogit): invoke rev-list without positional delimiter to treat revs correctly

Remove premature option terminator from rev-list command invocation while validating base ref against option-like prefixes.

Refs #671

* fix(cli,zerogit): resolve restore tip commit and enforce push remote unborn policy

Resolve restore tip commits via ResolveRemoteBranchTip for named and direct URL/path upstreams to eliminate bare branch fallback, enforce unborn destination policy on push remotes before branch creation, and extract resolveBranchPushPlan to isolate decision logic from repository mutation.

Refs #671

* fix(cli,zerogit): address review feedback on destination remote and upstream matching

Forward resolved pushRemote to branchPushPlan, update HasUpstream to support multi-segment remote upstream references, clarify IsNamedRemote comment, and extend CLI argument parsing tests.

Refs #671

* docs(cli): complete ensureFeatureBranch documentation and wire branchUpstreamRemoteAndMerge

Refs #671

---------

Co-authored-by: Claude Fable 5 <[email protected]>
Co-authored-by: euxaristia <[email protected]>
Co-authored-by: cairn-code <[email protected]>
2026-08-16 16:01:40 +08:00
ff62f73b7f fix(secrets,worktrees): fix secret redaction leakage and prune stale worktrees (#855)
* fix(secrets,worktrees): fix secret redaction leakage and prune stale worktrees

1. Prevent trailing redaction leaks in github_token, aws_access_key_id, and google_api_key by adding trailing word boundaries and allowing variable lengths. Refine the openai_key pattern to cleanly distinguish legacy keys and modern prefixed keys (sk-proj-, sk-svcacct-) from ordinary kebab-case phrases.
2. Implement auto-pruning of zero-owned git worktrees older than 24 hours at the start of worktrees.Prepare to prevent indefinite disk space leaks.

* fix(secrets,worktrees): close tail-leak edge case and worktree data-loss risk

Drop the trailing \b anchor on the four secret patterns whose body
class allows "-" (slack_token, google_api_key, the modern openai_key
branch, jwt). \b requires a word/non-word transition, so a secret
ending in "-" right before a delimiter has none, and the engine
backtracked the greedy quantifier to drop that last character instead
of failing the match, leaking it. The body character class already
provides the real stopping boundary, so the anchor was unnecessary.

Fix two issues in worktree Clean flagged in review:

- Staleness was decided by the worktree directory's own mtime, which
  only changes when an entry is added/removed/renamed directly inside
  it, not when a long-running task edits existing files deeper in the
  tree. Clean now walks the tree and treats any recently modified entry
  as live, and also skips any worktree a caller has explicitly locked
  via git worktree lock.
- baseDir ownership used a raw strings.HasPrefix, so a sibling like
  "<baseDir>-other" would false-match. Replaced with a filepath.Rel
  path-boundary check.

* fix(worktrees): check exit codes on removal, fail closed on inspection errors

defaultRunGit deliberately returns a nil error alongside a nonzero
CommandResult.ExitCode for a failed git invocation, so the worktree
remove call must check ExitCode itself instead of trusting a nil error
to mean success. Route it through gitOutput, which already does that.

worktreeIsStale treated an inspection failure (an unreadable file, a
WalkDir error) the same as "keep walking," which can let an
incompletely-inspected worktree be judged stale. Any inspection error
now makes it ineligible for removal instead.

* fix(secrets,worktrees): catch appended-suffix keys and scope pruning to owned worktrees

The scanner's trailing \b anchors made a credential vanish entirely when
followed by a word character outside its body class (an appended suffix
like AKIA...EXTRA, or ghp_..._suffix): the fixed or unbounded-greedy
quantifier had no valid word boundary to land on and the whole match
failed, so the real secret reached the redaction output unredacted.
Dropping the trailing anchors lets the body class itself stop the match,
so the credential prefix still gets redacted even when noise follows it.
Also recognize sk-admin- alongside sk-proj-/sk-svcacct- so OpenAI admin
keys aren't skipped by the narrowed modern-key branch.

Clean pruned any worktree under the caller-supplied BaseDir, but Prepare
only ever creates worktrees under a per-repository
zero-worktree-<repoKey> subtree of it. Scope pruning to that subtree so a
worktree a user manages by hand elsewhere under a shared BaseDir is never
force-removed. Also refuse to force-remove a worktree whose mtime looks
stale but that still has uncommitted or untracked changes: a task can
hold live work while waiting on a model, network, or user for longer
than the staleness window without writing to the tree again.

* fix(worktrees): make nested-activity test exercise the deep walk it claims to

activePath/internal was created by the same MkdirAll as the nested pkg
dir but never backdated, so it kept a fresh mtime and worktreeIsStale's
walk reported "not stale" as soon as it hit that directory, before ever
reaching the freshly-written file two levels deeper. The test passed
without actually exercising recursion past the first directory.

* fix(worktrees): lock zero-created worktrees and treat ignored files as dirty

Prepare never called git worktree lock, so the entry.locked skip in Clean
only ever protected worktrees a human locked by hand, never zero's own; a
worktree that finished committing and sat idle (e.g. waiting on a slow
model or network retry) for more than 24h looked clean-and-stale and got
force-removed by the mtime+dirty heuristic alone. Lock every worktree
Prepare creates so it gets the same protection.

worktreeIsDirty also used git status --porcelain with no --ignored, so a
worktree holding only .gitignore-matched task data (credentials, generated
drafts, artifacts) reported as clean and got force-removed with --force,
silently discarding it. Add --ignored so those files count as dirty too.

* fix(worktrees): release Zero's Prepare lock so Clean can reclaim finished worktrees

Prepare locks every worktree it creates so Clean's mtime+dirty staleness
heuristic never force-removes one Zero is still using, but nothing ever
unlocked it, making the automatic disk-space cleanup permanently inert.

Add Release (git worktree unlock) and wire it in two ways: zero exec
--worktree defers a release once its own run finishes, since that flow's
use of the worktree is bound to its own process. zero worktrees prepare
hands the path to a longer-lived external caller with no defined
end-of-life, so a new zero worktrees release <path> subcommand lets that
caller release it explicitly when done.

* fix(worktrees): normalize release path, aggregate Clean errors, unlock deleted worktrees

Address CodeRabbit's review on the lock-release fix:

- zero worktrees release now resolves its path argument to absolute
  before calling Release, since git worktree unlock matches against
  the path git recorded at creation, not whatever directory the
  caller happens to be running from.
- Clean now aggregates removal failures with errors.Join instead of
  overwriting lastErr, so multiple stale worktrees failing removal in
  the same pass are all reported, not just the last one.
- Release falls back to options.Cwd as the git working directory when
  the worktree path itself no longer exists (e.g. a caller deleted a
  locked worktree by hand instead of releasing it first), so the
  orphaned lock can still be cleared.

Added regression coverage for all three.

* style(worktrees): align aggregation test comments to gofmt output

* fix(worktrees,cli): restore reuse lease and scope unlock to owned locks

- Prepare re-locks a reused worktree so Clean's staleness heuristic cannot
  force-remove it while the new caller is still using it; a lock already
  held by a live external caller is kept in place and reported through the
  new Result.LockAcquired field.
- exec --worktree only releases the lock its own Prepare call acquired and
  surfaces a failed release on stderr with the affected path instead of
  discarding the error.
- worktrees release wires the resolved workspace root into Options.Cwd so
  the deleted-path recovery works outside the worktree directory.
- The relative-path release test derives its expected value via
  filepath.Abs, matching the resolution the CLI uses, so macOS /var vs
  /private/var spellings no longer break it.

* fix(worktrees,cli): reject in-use leases, validate before cleanup, add release -C

- Prepare rejects a worktree whose lock another run still holds, on both
  the reuse and the create-race paths, instead of handing a second live
  caller an unprotected shared checkout whose sole Git lock the first
  caller's exit would release.
- The automatic stale-worktree pruning runs only after the request itself
  validates, so a rejected command (an invalid --name) has no destructive
  cleanup side effect; covered end to end with real git in both directions.
- worktrees release accepts -C/--cwd naming the source repository, which
  the deleted-path recovery needs when launched outside the repo (the
  deleted worktree path is a one-way hash with no way back to its source).

* test(worktrees): canonicalize test roots to physical spelling

git records worktree paths in physical form, so the CI runners' symlinked
(/var -> /private/var) and 8.3-short (RUNNER~1) temp spellings made Clean's
containment check skip the test's stale entry and the pruning assertion
fail on macOS and Windows.

* fix(worktrees): preserve orphaned commits, verify release ownership, canonicalize base dir

Four fixes from the latest review round:

- Clean now creates a durable ref (refs/zero/orphaned-worktree/<sha>)
  for a detached worktree's HEAD before force-removing it, when that
  commit isn't already reachable from any other ref. Prepare always
  creates worktrees with `worktree add --detach`, so a commit made
  there had no ref pointing at it once the worktree was deleted,
  making it immediately eligible for git gc despite never having been
  merged/pushed elsewhere.

- Clean resolves its configured base directory through EvalSymlinks
  before comparing it against git's reported worktree paths: `git
  worktree list --porcelain` reports each worktree's PHYSICAL location
  (resolving symlink components), so a symlinked --worktree-dir made
  every worktree created under it permanently unprunable.

- Release now verifies path has a zero-worktree-<repoKey> ancestor
  directory component before running `git worktree unlock`, so it
  can't be used to clear the lock on a worktree a user or another tool
  manages by hand. The check doesn't need to know which --dir a given
  Prepare call used (nothing records that against a specific worktree,
  and the CLI never threads BaseDir through to Release) — the repoKey
  component is Prepare's actual ownership signature regardless of
  which directory it was created under.

- Route the release command's printed path and exec's release-failure
  diagnostic through the existing CLI redaction helper, and split the
  worktrees help text into prepare-specific and release-specific flag
  sections (release only ever supported -C/--cwd, not the --name/--dir/
  --json the shared block advertised).

All four have regression tests confirmed to fail without their fix
(two using real git worktrees, not just fakeRunner sequences). Build,
vet, and gofmt clean on linux/windows/darwin.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

* fix(worktrees): recoverable PID leases and reclaimable released worktrees

Two review findings on the cleanup lifecycle:

- A lock left by an abnormal exit (SIGKILL, crash, power loss) was
  skipped by Clean forever, recreating the permanent disk leak this PR
  set out to fix. exec --worktree now records its PID in the lease
  reason; Clean expires a lease whose recorded owner is provably dead,
  unlocking only after the staleness, dirty, and HEAD-preservation
  guards all pass. Human locks and PID-less leases (external
  `worktrees prepare` owners) remain permanent until explicit release,
  and any ambiguity in the liveness probe counts as alive.

- An explicitly released worktree holding only gitignored residue
  (node_modules, build output) was skipped at every age. Release is the
  owner's completion signal, so unlocked entries now block removal only
  on tracked/untracked changes; expired crashed leases keep the
  conservative --ignored probe since they never signaled completion.

Co-Authored-By: Claude Fable 5 <[email protected]>

* fix(worktrees): address review feedback on lease detection and release safety

Split dead-lease PID checking into posix/windows implementations so
Windows can reliably tell a dead process from a live one. Fix a path
canonicalization mismatch in two release tests. Derive release
ownership from git worktree list instead of the git-dir parent, which
was wrong for repos with a separate git-dir. Refuse to clear a lock
that was not taken by Zero in the first place.

* fix(worktrees): canonicalize paths for clean/release ownership checks

Compare Clean containment and Release ownership against physical path
spellings so macOS /var vs /private/var and symlink TMPDIR layouts match
git worktree list. Require a registered porcelain entry and a Zero lease
reason before unlock; treat an already-unlocked Zero worktree as a no-op.

* fix(worktrees,secrets): address jatmn review findings on #632

- Prepare and Release now agree on repoKey regardless of which worktree
  (main or linked) Prepare runs from, by keying off git worktree list's
  first entry (always the main worktree) instead of --show-toplevel.
  A worktree prepared from a linked checkout previously failed its own
  ownership check on release and its lease could never be cleared.
- osProcessAlive on Windows no longer treats every OpenProcess failure
  as "process is dead": only ERROR_ACCESS_DENIED (a live process this
  caller lacks rights to query) is now distinguished from a genuinely
  missing PID, so Clean can no longer force-remove an active worktree
  whose owning process it simply couldn't query.
- The openai_key redaction pattern now recognizes sk-or-v1- (OpenRouter)
  alongside the existing sk-proj-/sk-svcacct-/sk-admin- prefixes, so
  hyphenated OpenAI-compatible provider keys are redacted again without
  reopening the sk-<kebab-case-phrase> false-positive this pattern was
  narrowed to avoid.
- Release/exec --worktree error text is redacted before reaching
  stderr, matching the already-redacted success path; ownership errors
  interpolate the caller-supplied path, which could carry a key-shaped
  segment.
- canonicalizePath resolves symlinks through the nearest existing
  ancestor when the target itself no longer exists, so the documented
  `release -C` recovery path works again for a worktree deleted by hand
  under a symlinked --worktree-dir.
- Prepare rolls back the worktree `git worktree add` just created if the
  subsequent lock call fails for a reason other than a concurrent
  racer, instead of leaking an unleased checkout until Clean's 24h
  staleness window reclaims it.

Not addressed here: the P2 finding that worktree ownership is provable
only by a directory-name convention plus a lock-reason prefix, both of
which a user can reproduce by hand. A durable per-worktree ownership
marker would close that gap, but internal/worktrees has been on main
since #70, so a marker requirement could reject worktrees an
already-installed zero created before this change existed. Needs a
decision on migration before implementing.

* fix(worktrees): prove Prepare ownership with a git-admin marker

Address review findings that path convention plus lease-reason prefix are
forgeable by hand. Prepare now writes a zero-owner marker into the worktree
admin dir; Release and Clean require it before force-touching a path. Clean
also keys its owned subtree off the main worktree root so linked-checkout
calls still prune the same bucket Prepare uses. Tests plant the marker and
list the main worktree first so fixtures match production.

* fix(cli): complete worktrees release in shell completions

* test(worktrees,cli): add coverage for linked-worktree Clean, forged lease rejection, and completions

- TestCleanFromLinkedWorktreePrunesStaleWorktree: pins Clean deriving its
  owned-subtree key from the main worktree root (not the invoking linked
  checkout's --show-toplevel) so Prepare/Clean run from a linked worktree
  actually reclaim the worktrees Prepare created there.
- TestReleaseRejectsForgedZeroLeaseWithoutOwnershipMarker: pins the
  ownership-marker requirement against the exact forgery jatmn described - a
  worktree under the predictable zero-worktree-<repoKey> path, manually
  locked with a reason that merely starts with the zero lease prefix.
- Fix TestPrepareCreatesDetachedGitWorktree: its fake git runner ran out of
  canned results at Prepare's post-lock ownership-marker write, so
  writeOwnershipMarker resolved gitDir to "" and os.WriteFile wrote
  "zero-owner" as a relative path into the test process's real working
  directory instead of failing loudly. Give it autoAbsoluteGitDir like the
  other Prepare-exercising tests use and assert on the marker-write call.
- completions_test.go: assert `worktrees`/`worktree` completions include
  `release` alongside `prepare`.

* fix(redaction,worktrees): sort extra secret values by length descending and canonicalize worktree paths

* fix(secrets,worktrees): restore Anthropic key redaction and handle legacy worktree cleanup

* fix(secrets): add bash output redaction regression test for Anthropic API keys

* fix(worktrees): touch worktree mtime on reuse to prevent stale pruning

When Prepare reuses an existing worktree, it now touches the directory
to refresh its mtime. This prevents Clean from force-removing a
long-running but idle worktree (e.g. waiting on a model) that has no
recent file changes but is still actively in use.

Addresses the data-loss risk flagged in the PR review where mtime-only
staleness + --force removal could discard live worktrees.

Co-authored-by: cairn-code
Co-Authored-By: cairn-code <[email protected]>

* fix(worktrees): properly handle os.Chtimes error on reused worktree path

Co-Authored-By: cairn-code <[email protected]>

* fix(worktrees,secrets): unlock using porcelain entry path, set RepoRoot to primaryRoot, and add anthropic_key pattern

Unlock using matched porcelain entry path, set Result.RepoRoot to primaryRoot in Prepare, add dedicated anthropic_key secret pattern, and canonicalize fake-runner test paths.

Refs #632

* fix(tools): correct redaction placeholder assertion in Anthropic key test

TestFormatBashOutputRedactsAnthropicKey checked for the openai_key
placeholder instead of anthropic_key, a copy-paste leftover. The
redaction itself was already correct; only the assertion was wrong.

* test(worktrees): physicalize test paths for macOS tempdir symlink resolution

* fix(secrets,worktrees): address CodeRabbit review findings

Align RedactString token boundaries with secrets.Scan, strengthen the
Anthropic bash redaction assertion, fix Clean fixtures so they reach
the guards under test, and fail closed on ambiguous processAlive probes.

* fix(secrets,worktrees): restore broad key redaction and legacy Clean safety

Address human review on #855: keep sk- bodies with a digit filter instead
of enumerated vendor prefixes, add a looser JWT form, restore the
sk-test fixture, probe legacy ownership before dirty, treat non-INVALID
Windows OpenProcess errors as alive, redact Abs/cwd release errors, and
reclaim dead-owner leases on Prepare reuse.

* fix(secrets,redaction): always redact known OpenAI key prefixes

Alphabet-only sk-proj-/sk-svcacct-/sk-admin- tokens are still credentials;
keep the digit filter only for unknown sk- vendor forms so kebab phrases
like sk-learn-… stay un-redacted.

* Preserve digit-free legacy keys during redaction.

Refs #855

* fix(secrets,worktrees): address CodeRabbit findings on PR #855

Redact full compact JWE tokens, pin git locale for lock parsing, write the
ownership marker atomically, surface missing-dir unlock failures, and
fail closed when HEAD probes are indeterminate. Align Clean fixtures and
digit-free known-prefix redaction tests with the shipped behavior.

Refs #855

---------

Co-authored-by: Claude Sonnet 5 <[email protected]>
Co-authored-by: cairn-code <[email protected]>
Co-authored-by: euxaristia <[email protected]>
2026-08-10 10:51:11 +08:00
Kunj SHAH 2312abe5dd feat: add zero changes push and pr subcommands, and extra repo-info metrics (#391)
* feat: add zero changes push and pr subcommands, and extra repo-info metrics

* fix: address review feedback on changes command and repoinfo

* style: format repoinfo.go with gofmt

* fix: address remaining review feedback — JSON tags, -- separator, PR validation, tests

* fix: address CodeRabbit + review feedback — default-branch guard, --yes flag, branch parsing, typed JSON, missing tests

- Add default-branch guard: Push rejects main/master unless --yes is passed
- Add --yes flag to changes push/pr to allow pushing to protected branches
- Fix BranchCount parsing: skip detached HEAD lines and strip worktree + prefix
- Replace ad-hoc map with typed struct for PR --json output
- Add push failure short-circuit test for pr workflow
- Add --dry-run rejection test for pr workflow
- Add CreatePR dir assertion in zerogit_test
- Add --yes validation test for commit
- Add RejectsDefaultBranch and AllowDefaultBranchWithYes tests

* test: add positive-path test for --yes flag in changes push

* fix: resolve remote HEAD dynamically instead of hardcoded main/master

* style: run gofmt on changed files

* retrigger CI

* fix: resolve syntax error in parseChangesArgs
2026-07-05 17:03:29 +08:00
KRATOS 474f494b93 Deep-audit remediation + sandbox hardening (batches 1–35) (#189)
* audit batch 1: redact nested secrets fully; count image tokens in compaction estimate

- secrets.Redact: replace longest matches first so a containing PRIVATE KEY
  block is redacted before a nested shorter match corrupts its exact string
  (audit medium internal/secrets/scanner.go:81) + regression test.
- agent compaction estimateTokens: add a flat per-image token cost so an
  image-heavy context trends toward compaction instead of reading as ~0
  (audit medium internal/agent/compaction.go:58) + test.
- ledger: re-verify against current main; mark scanner.go:35 and
  redaction.go:362 already-fixed-on-main, record this batch's fixes.

* audit batch 2: worktrees defaultRunGit separates stdout/stderr

Capture git stdout and stderr into separate buffers instead of CombinedOutput,
so parsed rev-parse output is not polluted by git warnings and CommandResult.Stderr
carries the real error text (audit medium internal/worktrees/worktrees.go:247) + test.

* audit: re-verify all 87 pending findings against current main

Independent agent per file re-checked each open/partial finding against the
actual current code (the 06-11 ledger was verified on a since-diverged branch),
with an adversarial second pass on every already_fixed verdict. Authoritative
result: 78 genuinely pending (66 still_open + 12 partial); 9 rows were already
fixed on main and are reclassified. Full table in 2026-06-13-reverification.md.

* audit batch 3 (agent): cancellation identity, always-allow w/o sandbox, compaction usage, dedup

- loop.go: check ctx.Err() before collected.Error so a cancelled run returns
  context.Canceled (errors.Is holds) instead of a plain stringified error.
- loop.go: 'Always allow' with no sandbox engine now allows THIS call instead of
  denying it (persistence is skipped when there's nowhere to persist).
- loop.go: remove a duplicate schema["items"] assignment in propertyToRuntimeMap.
- compaction.go: forward OnUsage (token accounting) through the summarizer while
  still omitting OnText, so compaction's token cost is counted in usage/budgets.
- tests for all three behavioral fixes (each fails pre-fix).

* audit batch 4 (cli): list-tools -o json, interrupted -o json terminal, surface session-record failures

- exec --list-tools -o json now emits a JSON tool listing instead of falling
  through to the human-readable text (audit medium exec.go:182) + test.
- interrupted run with -o json now emits a terminal error+done on stdout instead
  of only printing to stderr, so a JSON consumer sees a clean end (medium exec.go:500) + test.
- execSessionRecorder: surface a latched session-append failure to stderr once at
  run end (deferred) instead of silently dropping it (medium exec_sessions.go:114/115) + test.
- left app.go trailing-arg ignore as-is: documented-intentional, TUI has no argv prompt.

* audit batch 5 (zerogit): status -z porcelain (renames + non-ASCII paths); document env-drop on plain Runner

- parseStatus: switch `git status` to `--porcelain -z` and parse the
  NUL-delimited form (audit medium zerogit.go:212). Previously the default
  --short output was split on newlines, so a rename `R old -> new` was kept as
  one bogus path and a non-ASCII/whitespace filename arrived C-quoted+escaped
  (e.g. `"caf\303\251.txt"`). The -z form never quotes paths and emits a
  rename/copy as `XY <dest>\0<src>`, so we now record the destination verbatim
  and consume the source field. + TestParseStatusZHandlesRenamesAndSpecialPaths.

- resolveRunners: document that the plain-Runner EnvRunner adapter intentionally
  drops env (audit low zerogit.go:417). The branch is reached only when a caller
  supplies a custom Runner without a RunGitEnv — in practice fake-Runner tests.
  Production leaves both nil and gets defaultRunGit/defaultRunGitEnv, which honor
  GIT_INDEX_FILE, so snapshot-diff isolation holds. Routing env calls to real git
  instead would break the fake-Runner test pattern and fix nothing in production.

- update Inspect/Commit mock tests to the -z status format and the new command.

* audit batch 6 (config): reject negative maxTurns; drop dead contract-gap helpers

- FileConfig.UnmarshalJSON now rejects a negative maxTurns instead of letting the
  `MaxTurns > 0` merge gates silently drop it and fall back to the default,
  hiding the misconfiguration (audit medium resolver.go:136). 0 is left as the
  "unset" sentinel (omitempty) and still falls back to the default; the CLI
  --max-turns flag continues to reject 0 too since there it is distinguishable
  from absent. + TestResolveRejectsNegativeMaxTurns / ...ZeroFallsBackToDefault.

- remove dead config/contracts.go (ContractGap, DefaultContractGaps,
  FindContractGapsByMilestone, ContractOwnerRuntime) and its test — referenced
  only by that test, never by production (audit low contracts.go:12).

- NOT changed: ResolveMCP intentionally does not run the provider command
  (TestResolveMCPDoesNotRunProviderCommand guards this), so the "ZERO_PROVIDER_COMMAND
  MCP servers dropped" row is by-design, not a defect.

* audit batch 7 (mcp): bound captured MCP server stderr

connectStdio attached a plain bytes.Buffer as cmd.Stderr that is only ever read
on initialize failure, yet it kept growing for the entire process lifetime as a
long-lived server logged to stderr (audit medium client.go:98). Replace it with
a concurrency-safe boundedBuffer capped at 64 KiB that keeps the head (enough for
init-error diagnostics) and discards the rest, reporting full write lengths so
os/exec never sees a short write. + TestBoundedBufferCapsRetainedBytes.

Left as-is (not defects worth the risk in the MCP client):
- client.go writer.write under client.mu: already designed to release the lock
  before the unbounded response wait; the residual concern is a server that stops
  draining stdin, an involved async rewrite for a theoretical deadlock.
- readLoop not answering server-initiated requests (ping): responding safely
  needs re-locking around the shared writer; no configured server relies on it.

* audit batch 8 (tools/providers): read_file truncation marker; drop dead provider branch

- read_file: when a max_lines cut occurs, append an explicit "[truncated: N more
  line(s)... set start_line=X to continue]" marker to the output. Previously only
  the Result.Truncated flag was set, which is invisible in the rendered text, so
  the model could not distinguish a cut read from a complete one (audit low
  read_file.go:89). + TestReadFileToolMarksTruncation.

- providers/factory: simplify `if !explicitProvider || isImplicitOpenAI(...)` to
  `if !explicitProvider` and delete the now-unused isImplicitOpenAI. The clause
  was dead: explicitProvider==true implies ProviderKind or Provider is set, but
  isImplicitOpenAI required both empty, so it could never contribute a case
  (audit low factory.go:118). Behavior-preserving; providers tests still green.

* audit batch 9 (sessions): Tree builds from a single List() snapshot (no N+1 disk scans)

Store.Tree recursed via ListChildren per node, and each ListChildren ran a full
store.List() that re-read every metadata.json from disk — O(nodes * total-sessions)
reads for one tree (audit medium lineage.go:140). Snapshot all sessions once, index
children by parent in memory, and recurse over that. Child ordering is factored into
sortChildSessions so ListChildren and Tree stay identical; path-scoped cycle
detection (delete(seen,...)) is preserved. Existing tree/lineage tests still pass.

Left as-is: store.go timestamp() second precision (RFC3339) — switching to
RFC3339Nano would break lexical UpdatedAt ordering against existing second-precision
records ("...00.5Z" sorts before "...00Z"), so it is not a safe one-line change.

* audit batch 10 (specialist): serialize accounting dedup-then-append

recordSpecialistStop and appendSpecialistUsageRollup checked for an existing event
(specialistEventExists → ReadEvents) and then appended under SEPARATE store locks,
so two concurrent finishers — a foreground onExit racing a TaskOutput poll, or a
background reaper — could both pass the dedup check and write duplicate stop/usage
events (audit medium accounting.go:72). Guard each check-then-append pair with a
package-level accountingMu (Executor is used by value, so a struct field would not
be shared). + TestRecordSpecialistStopDedupesUnderConcurrency (passes under -race).

* audit batch 11 (zeroruntime/gemini): O(1) text accumulation; gemini cached-token counts

- zeroruntime CollectStreamWithOptions accumulated assistant text with
  `collected.Text += event.Content`, reallocating the whole string on every chunk
  (O(n^2) over a long streamed response). Accumulate in a strings.Builder on the
  collector and materialize it once in flush, the single finalization point hit
  before every return (audit low helpers.go:104). Existing collect tests still pass.

- gemini decoded usageMetadata without cachedContentTokenCount, so a cached-prompt
  response reported zero cached input tokens while the other providers report them
  (audit medium gemini/types.go:88). Decode the field and thread it through
  streamState into NormalizeUsage as CachedInputTokens. + extended
  TestStreamCompletionEmitsTextUsageAndReasoningTokens.

* audit batch 12 (specialist): parse child stream without a line-length cap; drop dead helper

- ParseStream used a bufio.Scanner capped at 1 MiB, so one large stream-json line
  from a child (a big tool result or final answer) hit bufio.ErrTooLong and aborted
  the entire specialist run (audit medium streamer.go:43). Switch to a bufio.Reader
  with ReadString, which has no per-line limit; the child is our own trusted
  subprocess, so its output length is the legitimate bound. Line numbering and
  blank-line/EOF handling are preserved. + TestParseStreamHandlesLineLargerThan1MiB.

- remove dead formatTaskOutput (output_tool.go:244): zero callers and zero tests;
  it only forwarded to formatTaskOutputSummary, which is the one actually used.

* audit batch 13 (background/specialist): kill background tasks as a process group

Background children were launched in the parent's process group and terminated by
signalling only the single PID, so any process the task forked was orphaned and
outlived a cancel; the signal also risked hitting a recycled PID after the child
was reaped (audit medium process_posix.go:38/50).

- ConfigureChildProcessGroup (Setpgid on POSIX, no-op on Windows where taskkill /T
  already tree-kills) is applied at launch so the child leads its own group.
- terminateProcess now SIGTERM/SIGKILLs the negative PID (the whole group), with a
  pid>1 guard so a bogus 0/1 can never expand to "our own group" or "everything",
  and treats ESRCH as already-gone. Liveness polls the group. Targeting a group
  (rarely recycled vs. a bare PID) also shrinks the reaped-then-recycled window.
- specialist launchBackgroundProcess opts every child into its own group; on a
  SetPID failure it now kills the child + group, marks the task errored, and records
  the stop (deduped) instead of leaking an untracked orphan.
- tests launch as group leaders; new TestTerminateProcessKillsForkedChildren proves
  a forked grandchild dies with the group.

* audit batch 14 (sandbox): quote-aware shell segment splitting

splitShellSegments used a quote-unaware strings.Replacer, so a shell operator
inside quotes was treated as a separator: `git commit -m "use top | less"` split
into a `less` segment and `echo "a; vim b"` into a `vim` segment, both falsely
flagged as interactive (audit medium safe_command.go:138).

Replace it with a quote-aware scanner that mirrors the shell: single quotes make
everything literal; double quotes keep $(...)/`...` substitution active but treat
|, ;, && as literal; unquoted text splits on the same operator set as before
(;, |, ||, &&) plus substitution boundaries. Real unquoted operators still split,
so an interactive program behind a separator — or inside a live `"$(...)"`
substitution — is still caught (no new false negatives, the security-relevant
direction). + TestDetectInteractiveQuoteAwareSeparators covering both directions.

* audit batch 15 (cron): collapse DST fall-back repeated hour to one fire

On a fall-back day the clock repeats an hour (e.g. 01:30 EDT then 01:30 EST), so
Next("30 1 * * *", <01:30 EDT>) returned the same-day 01:30 EST — firing a daily
job twice (audit medium schedule.go:171, which previously guarded only the
spring-forward gap).

Next now skips a match whose local wall-clock minute equals `after`'s but whose
absolute time is later (the repeated-hour duplicate) and keeps searching. Normal
forward search always advances the wall-clock, so this only triggers on the
fall-back repeat; when the scheduler passes the last fire time as `after`, the
repeated hour collapses to a single fire. + TestNextDSTFallBackDoesNotRepeatHour
(spring-forward termination test still passes).

Note: Next is stateless, so it dedupes relative to `after`; a caller that passes
an arbitrary mid-hour "now" instead of the last fire time is out of scope here.

* audit batch 16 (mcp): skip SSE notifications before the response; larger SSE buffer

- decodeSSERPCMessage returned the first non-empty `message` event unconditionally,
  so a server-initiated notification/request arriving before the response made the
  caller see an id mismatch and fail (audit medium network_client.go:621). It now
  skips any message carrying a method (notifications/requests have one; a response
  does not) and returns the first real response; the caller's rpcIDMatches still
  validates the id. + TestDecodeSSERPCMessageSkipsNotifications.

- raise the per-event SSE scanner cap from 1 MiB to a bounded 8 MiB so a large but
  legitimate MCP message no longer hits bufio.ErrTooLong and fails the request
  (audit medium network_client.go:637); still bounded against an unbounded server.

Out of scope (kept): full reconnect of a persistent SSE stream after a fatal read
error — a larger change than this remediation.

* audit batch 17 (sessions): fsync session metadata before the atomic rename

writeMetadata wrote the temp file with os.WriteFile (no sync) and renamed it into
place, so a crash right after the rename could expose a metadata file whose bytes
were never flushed — a torn or empty file that corrupts the whole session (audit
medium store.go:632). Write+fsync the temp via a new writeFileSync helper before
renaming, closing that window. + TestWriteFileSyncRoundTrips.

Deliberately scoped:
- Event-log appends (appendEventLocked) are NOT fsynced per append: that would add
  a disk flush to every event (every tool call), and a hard-crash loss of the log's
  unsynced tail is acceptable, whereas torn METADATA is not. Metadata is the
  integrity-critical part and is what this syncs.
- Directory fsync is omitted for cross-platform simplicity (it errors on Windows);
  the file fsync already prevents the torn-contents failure, the serious case.

Left for follow-up (in this bucket but not safe/clear wins here):
- hooks append sequence still re-reads the file per append; the in-memory cache is
  cross-process-unsafe and the safe last-line read is fiddly for a low-volume log.
- Fork event re-append/de-dup is nuanced usage-accounting and needs its own change.

* audit batch 18 (agent): count tool-defs in compaction estimate; don't deny an always-allow on persist failure

- maybeCompact's estimate omitted the tool definitions, which ride on every
  request, so the real input could exceed the model limit while the message-only
  estimate stayed under threshold and compaction never fired (audit medium
  compaction.go:58). partitionTools is now computed before maybeCompact (it does
  not depend on the messages) and the exposed tools' estimated tokens are added to
  both the threshold check and the post-compaction shrink check. + estimateToolDefTokens
  and TestEstimateToolDefTokensCountsDefinitions.

- PermissionDecisionAlwaysAllow denied the call when persistPermissionGrant failed,
  overriding what the user explicitly allowed (audit medium loop.go:468). Persisting
  is now best-effort: a failure (or no sandbox engine) just means the grant is not
  remembered and the user is re-prompted next time, not denied now. This also drops
  the dead requestEvent.GrantMatched/Grant writes (audit low loop.go:473) — the
  emitted event derives them from the sandbox decision via buildPermissionEvent.

Left intentional (documented, not defects): the reactive-retry path omits OnText to
avoid duplicating mid-stream text (loop.go:183); OnContext/MeasureContext is a
complete, tested context-breakdown scaffold awaiting a consumer (types.go:183).

* audit batch 19 (usage): price escalated usage from the event's own model

exec persists payload["model"] on --allow-escalation runs (the model can change
mid-run), but BuildReport priced every event from the session's Metadata.ModelID
and never read the payload, so usage from an escalated model was mis-priced at the
base model (audit medium report.go:17). usageEventPayload now carries Model and
BuildReport prefers it, falling back to the session model when absent (older
events stay byte-identical and behave as before). + TestBuildReportPricesFromEventModelWhenPresent.

* audit batch 20 (sessions): don't copy usage events into a fork (no double-count)

Fork re-appended every parent event, including provider_usage, into the child, so
a usage report aggregating the parent and the fork double-counted the parent's
usage (audit medium store.go:387). Skip EventUsage when copying — it already
counted against the parent and is not part of the conversation history a fork
replays — and record the actual copied count in the fork marker. + TestStoreForkSkipsUsageEvents.

* audit batch 21 (cli/skills): warn on duplicate skill names instead of silently dropping

skills.Load deduplicates same-named skills (first directory wins) and records the
dropped collisions via skills.Duplicates, but nothing surfaced them, so a shadowed
skill just vanished with no signal — and Duplicates had no production caller (audit
low skills.go:91). `skills list` now reports each collision to stderr (keeping
stdout/--json clean), using Duplicates. + TestRunSkillsListWarnsOnDuplicateNames.

Note: skills.Get is kept — it is a by-name accessor used throughout the package's
tests, not dead code.

* audit batch 22 (cli/cron): capture the run error from stream-json stdout

Cron jobs run exec with --output-format stream-json, so a failure is reported as an
`error` event on STDOUT, but the run record's Error was set only from stderr — so a
failed job often recorded an empty/uninformative error while the real message sat
unread in outBuf (audit low cron_run.go:150). On a non-zero exit, scan the stdout
stream-json for the error event's message and prefer it, falling back to stderr.
+ extractStreamJSONError and TestExtractStreamJSONError.

* audit batch 23 (sandbox): richer macOS seatbelt profile (signal + mach-lookup)

The generated sandbox-exec profile was default-deny with only process/sysctl/file
allowances, so two real gaps remained on macOS (sandbox quality report H1):

- A sandboxed script could not signal the children it spawned — `kill` returned
  "Operation not permitted" under seatbelt, breaking common `cmd & ... kill`,
  test-runner, and timeout patterns. Add `(allow signal (target self) (target pgrp))`,
  which stays scoped to the command's own process group.
- XPC to system daemons was denied, so keychain (securityd/trustd), user/group
  lookup (opendirectoryd), preferences (cfprefsd), network config
  (SystemConfiguration), launch services, and the pasteboard all failed. Add a
  curated `(allow mach-lookup ...)` allowlist (`sandboxMachServices`).

Neither touches the file-write or network rules, so the workspace boundary is
unchanged — verified on a real macOS host: `security`/`scutil`/`pbpaste`/self-kill
now succeed while writes to $HOME and /etc are still denied. iokit-open was tried
and dropped as unnecessary. + unit assertions (TestSandboxExecProfileGrantsSignalAndMachLookup)
and extended the darwin integration test with a self-kill case and an
outside-workspace deny check.

* audit batch 24 (sandbox/tools): remove dead OnSandboxDecision hook

RunOptions.OnSandboxDecision had no setter anywhere, yet registry.RunWithOptions
spawned a goroutine (with panic recovery) for it on every sandboxed tool call —
pure per-call overhead for an unreachable callback (sandbox report M1). The sandbox
decision is already surfaced to observers via the permission event
(buildPermissionEvent reads the decision), so this hook is redundant; delete the
field and its call site.

* audit batch 25 (sandbox/cli): exact-path grants — create and revoke by path

The engine already matched ScopeFile grants and DeriveScope already produced them
from path/file tool args, but the CLI could neither create one explicitly nor
revoke a single one (sandbox report L3 / prompt 7). Add:

- GrantStore.RevokePath(tool, path): revokes only the grant whose scope matches the
  given file/dir, leaving tool-wide and other-path grants intact (path canonicalized
  to absolute like stored scopes). + TestGrantStoreRevokePathRemovesOnlyMatchingScope.
- `zero sandbox grants allow <tool> --path <p>`: persists an exact-file (ScopeFile)
  grant, path resolved to absolute so it matches lookups and revokes.
- `zero sandbox grants revoke <tool> --path <p>`: revokes just that grant (default
  still revokes all grants for the tool). + TestRunSandboxGrantsCreateAndRevokeByPath.

The TUI permission-card "Allow always (exact path)" option is intentionally left for
the TUI feature branches (it overlaps #187/#188); the engine + CLI now cover the
full create/match/revoke round-trip for file-scoped grants.

* audit batch 26 (sandbox): Engine.Precheck — report violations before execution

Add Engine.Precheck(ctx, request) []Violation, which reports the sandbox
violations that would block a tool request before it runs (sandbox report / prompt 6).
It reuses Evaluate so policy is not duplicated: an allowed or merely-prompted
request yields no violations; a denied request yields its violation (via the shared
violationsFromDecision helper, with a ViolationPolicyDenied fallback for a deny that
carries no structured violation). A nil engine yields nothing.
+ TestEnginePrecheckReportsViolationsBeforeExecution.

Wiring Precheck into the batch-confirmation prompt is intentionally left to the TUI
branch: it touches prompt rendering, and short-circuiting the agent loop's deny path
would skip the before/after-tool hooks that currently fire around a policy-denied
call. The engine API is in place for that consumer.

* audit batch 27 (sandbox): scoped-egress domain prompt with timeout + caching

The scoped-egress proxy failed closed on any host outside the allowlist. Add an
opt-in DomainPrompt callback (prompt 8): an UNKNOWN host (neither allowed nor
explicitly denied) is authorized at request time via the callback instead of being
refused outright. An explicitly denied host is still refused without prompting; the
callback is bounded by PromptTimeout (default 60s, timeout/error => deny); decisions
are cached for the proxy's lifetime so a host is prompted at most once. With no
callback set the strict fail-closed behavior is unchanged. Wired through both the
CONNECT and HTTP handlers via authorizeTarget.
+ TestEgressProxyAuthorizeDomainPrompt / ...TimeoutDenies / ...NilPromptFailsClosed.

The user-facing prompt that supplies the callback is left to the permission UI (TUI)
branch; the egress mechanism (callback + timeout + cache) is in place and tested.

* audit batch 28 (sandbox): AST-based shell analysis (AnalyzeCommand)

Add AnalyzeCommand(script) AnalysisResult, a static shell analyzer built on the
mvdan.cc/sh/v3 parser (prompt 12). Walking the parsed command tree makes it a more
precise second opinion than the regex detector: a program name only counts when it
is an actual command, so `echo "vim ..."`, `printf 'open with vim'`, and
`git commit -m "rm -rf /"` are clean, while real commands are flagged —
interactive (editors/pagers + REPLs, with the same -e/script suppression as
nonInteractiveREPLFlags), destructive (rm -rf/-fr, dd, mkfs, shred, ...), and
network (curl/wget/ssh/nc/...). An unparseable script yields TooComplex so callers
can treat it as higher-risk. + TestAnalyzeCommand (16 cases) / ...EmptyIsClean.

Dependency: mvdan.cc/sh/v3 pinned to v3.11.0 — compatible with the existing go 1.24
directive (the latest v3.13.1 would have bumped the module to go 1.25). It is kept
as a standalone analyzer for callers to consult; feeding it into Engine.Evaluate is
deliberately not done here, since that would change allow/deny classification.

* audit batch 29 (sandbox): unify proxy-env generation (ProxyEnv)

Export ProxyEnv as the single source of truth for proxy-env injection (prompt 9
req 1), replacing the unexported scopedProxyEnv used by the sandboxed-shell path.
+ TestProxyEnv.

Investigation that bounds the rest of prompt 9 (documented in the ProxyEnv doc):
- web_fetch already honors HTTP_PROXY/HTTPS_PROXY — its transport clones
  http.DefaultTransport, whose Proxy is http.ProxyFromEnvironment.
- MCP children already inherit the parent env (mergeProcessEnv appends os.Environ),
  so they pick up any proxy vars the agent has.
So the only missing link to scope FetchUrl/MCP is a SESSION-level egress proxy whose
address reaches the agent process. That is deliberately NOT wired here: doing it
safely requires allowlisting the active LLM provider's own domain first, or the
agent's provider calls would route through the scoped proxy and be denied — a
correctness pitfall that also can't be verified end-to-end on this host. Flagged
rather than shipped blind.

* audit batch 30 (sandbox): Linux seccomp Unix-socket block — UNVERIFIED, needs Linux CI

Adds a pure-Go (no cgo, no vendored binary) seccomp BPF filter that denies
socket(AF_UNIX) with EPERM on x86-64/arm64, closing the Unix-socket gap bubblewrap's
filesystem/network isolation leaves open (prompt 11):

- internal/sandbox/seccomp.go: the classic-BPF program as a platform-neutral
  []sockFilter, built and UNIT-TESTED (structure + every jump offset in range — the
  classic way a hand-written BPF filter goes silently wrong).
- seccomp_linux.go: ApplyUnixSocketBlock installs it via prctl(NO_NEW_PRIVS) +
  prctl(SET_SECCOMP, MODE_FILTER). seccomp_other.go is a no-op everywhere else.
- cmd/zero-seccomp: a tiny linux-only exec wrapper that applies the filter then
  execs the real command (the standard way to install seccomp in a child with
  os/exec); degrades gracefully (warns + runs) if the kernel lacks seccomp.

⚠️ HONEST CAVEAT: I developed this on macOS and CANNOT run the actual AF_UNIX block
here. darwin build, `GOOS=linux` cross-compile, vet, and the structure test all pass,
but the unit test verifies the program's SHAPE, not that the kernel actually blocks
AF_UNIX — that MUST be verified on Linux CI (create a Unix socket under the wrapper
and assert EPERM). Safe to ship as-is: it is linux-only, no-op on every other
platform, and not wired into the bwrap command yet (opt-in prefixing the sandboxed
command with zero-seccomp is the remaining integration), so it cannot regress any
current path.

* audit batch 31 (sandbox): macOS denial log monitor (opt-in, default off)

Re-adds the macOS seatbelt-denial monitor as an opt-in feature (prompt 10). When
Policy.MonitorDenials is set, the sandbox-exec profile tags its default-deny with a
marker and bash tails `log stream` for that tag during the command, appending any
captured denials as a <sandbox_violations> block to the command's stderr so the
model can see what was blocked.

- DenialMonitor (darwin) tails/parses tagged denials with a capped, deduped ring
  buffer and noise filtering; no-op stub on other platforms. parseSandboxDenyLine is
  unit-tested. + profile-tag test + appendSandboxViolations test.
- Default OFF: with MonitorTag empty, StartDenialMonitor is a no-op and the command
  path is byte-for-byte unchanged, so there is no regression or per-command overhead
  unless enabled.

CAVEAT: on at least one macOS host (verified live) seatbelt denials are NOT delivered
to the `log stream`-queryable unified log, so the monitor captures nothing there. It
is the standard mechanism and works on macOS versions that do log denials; shipping
it default-off means it never affects whether a command runs.

* audit batch 32 (sandbox): wire seccomp Unix-socket block into bubblewrap (opt-in)

Completes prompt 11: the zero-seccomp helper (which installs the AF_UNIX seccomp
filter) is now actually invoked by the sandbox instead of only existing as a
standalone binary.

- bubblewrapCommandPlan, when Policy.BlockUnixSockets is set, ro-binds the
  discovered zero-seccomp helper into the sandbox at its host path and prefixes the
  command with it so the filter is installed before the real argv runs.
- findSeccompHelper discovers the helper next to the running executable first, then
  on PATH; it returns "" when absent, so the sandbox degrades gracefully (runs
  without the extra filter — bubblewrap's fs/net isolation still applies) rather
  than failing the command. Exposed as a package var so the wiring is unit-tested
  on any OS.
- Reachable from config: SandboxConfig.BlockUnixSockets and .MonitorDenials now map
  onto the policy in applyConfiguredSandboxPolicy (opt-in only — config can turn a
  hardening flag on, never off). Both default OFF.
- Tests: helper-prefix present when enabled / absent by default; config flags apply
  independently and stay off when omitted.

Default OFF and Linux-only effect; the runtime seccomp enforcement still needs a
Linux host/CI to exercise end-to-end (the wiring and BPF program are unit-tested).

* audit batch 33 (sandbox): enforce scoped/deny network policy in web_fetch & web_search

Completes prompt 9: the built-in network tools now honor the SAME allow/deny/scoped
policy the sandboxed shell egress proxy enforces, instead of bypassing it. Before
this, web_fetch/web_search would reach any public host even when the policy was
NetworkDeny or NetworkScoped — the egress proxy only constrained shell commands.

- New shared gate Engine.NetworkHostAllowed(host) reuses the egress domain matcher
  (domainAllowed/normalizeDomains/effectiveNetwork) as the single source of truth:
  allow → all hosts; deny → none; scoped → only AllowedDomains minus DeniedDomains
  (empty allowlist collapses to deny). Disabled policy / nil engine impose nothing.
- web_fetch is now sandbox-aware: the host is checked before the request AND on every
  redirect, so a denied/unlisted host fails closed before any dial. Plumbed via a
  networkPolicyGate so the no-sandbox path is byte-for-byte unchanged.
- web_search is sandbox-aware: the configured backend's endpoint host is checked
  before the query leaves the machine; blocked under deny, and under scoped unless the
  backend host is allowlisted.
- The registry already routes sandbox-aware tools through RunWithSandbox when an
  engine is present, so this activates automatically wherever the sandbox is wired.
- Tests: engine gate matrix (deny/allow/scoped/denylist/empty/disabled/nil + host:port);
  web_fetch & web_search block denied/unlisted hosts without dialing and allow listed
  ones; endpoint-host parsing.

* audit batch 34 (sandbox): prove network-policy wiring end-to-end + document opt-in flags

Verification follow-up to batches 31-33; no behaviour change.

- Adds a registry-level test that exercises the FULL chain for the scoped-network
  enforcement: registry.RunWithOptions -> engine.Evaluate (passes a scoped,
  egress-capable sandbox-exec backend) -> routes web_fetch through RunWithSandbox ->
  per-host allowlist blocks an unlisted host before any dial. This proves the
  Tool-interface value actually satisfies sandboxAwareTool at the registry boundary,
  not just in a direct method call.
- Documents the two opt-in hardening flags (sandbox.blockUnixSockets,
  sandbox.monitorDenials) and the scoped web_fetch/web_search behaviour in the README
  so the config keys are discoverable. Both remain off by default.

Confirmed wiring: agent loop forwards options.Sandbox to the registry; the registry
routes sandbox-aware tools (web_fetch, web_search) through RunWithSandbox when an
engine is present; MonitorTag is set only on the macOS sandbox-exec plan; the
seccomp helper prefix is added only on the bubblewrap plan when BlockUnixSockets is
set; both config flags map onto the policy via applyConfiguredSandboxPolicy.

* audit batch 35 (sessions): fix Windows CI failure in TestWriteFileSyncRoundTrips

The exact-permission assertion (perm == 0o600) added in batch 17 fails on
windows-latest because Windows does not honor Unix permission bits: Go reports
0o666 for a writable file regardless of the mode passed to OpenFile. This was the
sole cause of the failing Smoke (windows-latest) CI job; macOS and Ubuntu passed.

Guard the perm check with runtime.GOOS != "windows" so it still verifies the mode
on the platforms that enforce it, while the round-trip (write + read-back) is still
asserted on every platform.

* audit batch 36: address CodeRabbit review (5 findings)

- background/process_posix: after SIGKILL, poll until the process group is
  actually gone (SIGKILL is async) and return an error if it survives past a
  second deadline, instead of returning nil while descendants still race.
- sandbox/safe_command: only treat ')' as a substitution boundary when it closes
  an active $(...). A literal ')' (e.g. echo "a) less") no longer splits into a
  fake `less` segment and is no longer misflagged as interactive. Depth-tracked so
  nested $(...) still isolate their inner command. Direct splitShellSegments test
  (fails pre-fix: yields ["echo \"a", "less\""]).
- cron/schedule: the DST fall-back collapse now only applies when `after` sits
  exactly on the minute boundary (its "last fire time" form). With sub-minute
  precision (e.g. 01:30:30 EDT) the first 01:30 fire already passed, so the repeated
  01:30 EST is the legitimate next fire and is returned — restoring strictly-after
  semantics. New test fails pre-fix (skipped to next day).
- config/types: maxTurns error message now reads "must be >= 0" to match the check
  (0 is accepted; only < 0 is rejected). Negative-maxTurns test asserts the message.
- docs/audit: header date/branch metadata now matches the body (2026-06-13,
  fix/audit-batch) instead of the stale 2026-06-11/fix/audit-critical-high snapshot.

Verified: gofmt clean; go vet clean; host + linux + windows builds; affected suites
green. Each behavioural fix ships with a test confirmed to fail without the change.

* audit batch 37: address CodeRabbit re-review (12 findings)

Findings on the audit code from batches 21-36; each behavioural fix ships with a
regression test (several confirmed to fail without the change).

sandbox/analyzer (AnalyzeCommand):
- Unwrap launcher prefixes (sudo/env/nice/bash -c/...) and recurse into `sh -c`
  payloads so `sudo rm -rf`, `env curl …`, `bash -c 'vim x'` classify on the real
  command, not the launcher. Mirrors DetectInteractiveCommand.
- Honor rm's `--` end-of-options marker so `rm -- -rf` (delete a file named -rf) is
  not flagged destructive.

sandbox/engine: NetworkHostAllowed now shares one backend-aware effective-mode
helper with Evaluate, so scoped collapses to deny when the backend can't enforce
scoped egress — the per-tool gate can no longer permit traffic the engine-level
decision would fail closed.

sandbox/egress: cache domain-prompt decisions by host:port, not host, so one
"allow" can't authorize other ports on the same host.

sandbox/safe_command: the segment splitter is now escape-aware (\| , \" ) so an
escaped operator/quote can't manufacture a fake interactive segment.

sandbox/log_monitor (darwin): Wait() the `log stream` child after draining stdout
so the cancelled process isn't leaked as a zombie.

tools/web_search: confine the search backend to same-host redirects (with a limit)
so a redirect chain can't egress to a host the scoped/deny policy never authorized.

cli/sandbox: an explicit empty --path (`--path=` / `--path ""`) now fails closed
instead of silently widening an allow to tool-wide or a revoke to all-grants.

cli/skills: warn on stderr when duplicate-skill detection fails instead of
swallowing the error.

specialist/exec: don't mask a failed orphan-kill — join the TerminateProcess error
with the SetPID error so a surviving process is visible.

background/process_posix: resolve the PGID and only group-signal when pid leads its
own group; otherwise signal the individual PID. Avoids both a false-success on a
non-leader ESRCH and the hazard of signalling an unrelated (possibly our own) group.

Verified: gofmt + go vet clean; host + linux + windows builds; full go test ./...
green.

* audit batch 38: address CodeRabbit re-review round 2 (3 findings)

Follow-ups to batch 37, each with a regression test:

- safe_command (splitter): a ')' is now only a substitution boundary when it
  closes an active, UNQUOTED $(...). A quote-state stack saved at each '$(' lets a
  substitution run in a fresh quoting context and restores the outer quoting on
  its matching ')'. Fixes `echo $(printf "a) less")` splitting into a fake `less`
  segment, while still isolating the inner command of `echo "$(vim x)"`.

- egress: deduplicate in-flight domain prompts per host:port. Concurrent requests
  for the same unknown target now wait on the first prompt and reuse its cached
  decision instead of each firing a prompt (a prompt storm) and racing to write
  the final decision. Race-tested with 25 concurrent authorizers → one prompt.

- analyzer + safe_command: wrapper option-value consumption is now wrapper-specific
  (wrapperValueOptionsByProg) instead of a global option set. A valueless flag like
  `sudo -n` no longer swallows the real payload, so `sudo -n rm -rf` /
  `sudo -n curl …` are correctly classified destructive/network; `sudo -u root vim`
  still consumes its value. Shared by the AST analyzer and the regex detector so
  they can't diverge.

Verified: gofmt + go vet clean; host + linux + windows builds; go test ./... and
-race on sandbox/background all green.

* audit batch 39: address CodeRabbit re-review round 3 (12 findings)

All verified against current code; each behavioural fix has a regression test.

Security / correctness:
- tools/web_search: redirect policy now also refuses a scheme change, blocking a
  same-host https→http downgrade that would send the query + bearer token over
  plaintext.
- sandbox/safe_command: a ')' is only a substitution boundary when it closes an
  active UNQUOTED $(...), and backticks now get the same quote-state save/restore
  as $( — so `echo "`a | less`"` and `echo "$(true | less)"` no longer hide the
  inner pager from interactive detection.
- sandbox/analyzer + safe_command: wrapper option-value consumption stays
  wrapper-specific, and unwrapping no longer aborts on a dynamic ($x) wrapper arg
  once a wrapper is active, so `env "$opts" curl` / `sudo "$x" rm -rf` are still
  classified.
- sandbox/egress: in-flight prompts deduped per host:port (carried from batch 38);
  the prompt callback is now cancellable (context cancelled on timeout) so a stuck
  prompt can abort instead of leaking; signature threaded through.
- sandbox/runner: per-plan unique denial tag (pid+counter) so concurrent monitored
  sandbox-exec runs can't ingest each other's denials; helper selection now
  requires an executable regular file so a non-exec sibling degrades gracefully.
- mcp/network_client: aggregate SSE event-size cap (not just per-line) so a server
  can't grow memory with many unterminated data: lines.
- specialist/accounting: a previously-recorded stop/usage with an empty runId is a
  catch-all and now suppresses a later runId-bearing duplicate.
- sessions/lineage: Tree fetches the root via Get() first so a corrupt root
  surfaces its real error instead of degrading to "not found".

Docs/tests:
- background/terminate: docstring now states the leader-only group-kill (PID-only
  fallback for non-leaders); test child-liveness probe uses ESRCH specifically.
- cli/sandbox: grant usage strings include --path.

Verified: gofmt + go vet clean; host + linux + windows builds; go test ./... and
-race on sandbox/background all green.

* audit batch 40: address CodeRabbit re-review round 4 (8 fixed, 1 skipped)

Verified each against current code.

Fixed:
- sessions/lineage: PANIC FIX — store.Get returns (nil, nil) for a missing
  session, so the batch-39 root prefetch could nil-deref. Guard root == nil and
  return a not-found error. Regression test added (was a panic).
- agent/compaction: the reactive recover() now records lowWaterMark in the SAME
  combined (messages + tool-defs) token domain maybeCompact uses, so the proactive
  shrink-guard compares like with like. recover() takes tools; callers pass
  request.Tools.
- mcp/network_client: SSE aggregate counter no longer counts a joining newline for
  the first data line (only when prior content exists), avoiding premature rejects.
- sessions/store: fsync the parent directory after the metadata rename so the
  rename is durable across a crash (no-op on Windows, which can't fsync a dir).
- sandbox/egress: parse the target port with strconv.Atoi instead of
  net.LookupPort (no context-unaware resolver use).
- sandbox/runner: escape the per-plan denial tag through sandboxProfileString when
  embedding it in the seatbelt profile.
- sandbox/seccomp_linux: guard against an empty filter program before taking
  &kernelFilters[0] (defensive; the program is fixed non-empty today).
- cli/cron_run_test: assert last-error-wins with two error events.
- background/terminate, cli/sandbox usage, process_posix_test ESRCH (carried).

Skipped (with reason):
- zerogit worktree-rename (Y='R') test: git porcelain v1 -z only emits the
  rename-source field when the INDEX column is R/C; the worktree column never
  carries 'R' with a source field in v1, so the fixture would test output git
  doesn't produce, and making parseStatus consume on code[1]=='R' would risk
  mis-consuming the following entry for a plain ` R` status. Left as-is.

Verified: gofmt + go vet clean; host + linux + windows builds; go test ./... and
-race on sandbox/background all green.

* audit batch 41: address CodeRabbit re-review round 5 (4 findings)

All verified against current code; code fixes have regression tests.

- agent/compaction: summarizeWithFallback's reduce pass no longer swallows ALL
  errors. A context-limit error still falls back to the joined partial summaries
  (documented "extreme" case), but a non-context failure (auth/network/provider)
  now surfaces unchanged, per the function's contract. Two tests (propagate vs.
  joined-fallback); the propagate test fails without the fix.
- sandbox/safe_command + analyzer: wrapper value-consuming options now include the
  long spellings (sudo --user root, env --unset NAME, timeout --signal …), so a
  long flag's value is no longer mis-read as the program (interactive/destructive/
  network detection bypass). A `--flag=value` token carries its own value and never
  consumes the next token. Tests for space and = forms in both the AST analyzer and
  the regex detector.
- docs/audit: the status-ledger summary table's open/partial cells (64/14) were the
  lone outlier — the ledger's own narrative and 2026-06-13-reverification.md both
  state 66/12. Corrected to 66/12 (66+12+97 = 175); derivation: body 69 open + 18
  partial minus the 9 already-fixed-on-main (3 open + 6 partial) = 66/12 = 78
  pending, fixed 88+9 = 97. Added a comment documenting the summary-vs-body
  relationship. The reverification doc already states 66/12, so both now agree.

Verified: gofmt + go vet clean; host + linux + windows builds; full go test ./...
green.

* audit batch 42: address CodeRabbit re-review round 6 (1 fixed, 1 kept w/ proof)

CodeRabbit re-surfaced two "duplicate" refinements; CI was already green (its 6th
pass was a COMMENT with no new findings).

- cli/sandbox_test (TestRunSandboxGrantsRejectsEmptyPath): now seeds a tool-wide
  grant and asserts grant-store immutability after EACH rejected empty-`--path`
  call (reflect.DeepEqual before/after), so a mutation in one call can't be masked
  by a later one — and a buggy "revoke all" is actually observable (it's a no-op on
  an empty store). Stronger than the suggested patch.

- zerogit.parseStatus: KEPT consuming the rename source on the index column only
  (code[0]), with an explanatory comment. Verified empirically that git porcelain
  v1 -z reports a rename/copy (and emits the extra source field) only in the index
  column: `git mv` → "R  new\0old\0"; a worktree-only rename → " D old\0?? new\0"
  (delete + untracked, never "R" in code[1]). Consuming on code[1]=='R'/'C' would
  match no real git output and would only risk mis-consuming the next entry on
  malformed input, so the suggestion is declined as incorrect for v1.

Verified: gofmt + go vet clean; host + linux + windows builds; affected suites green.
2026-06-13 21:32:48 +05:30
KRATOS a6d6939bc5 audit: fix isolated remaining findings (redaction, secrets, rune-safety, credential status) (#174)
* audit: fix redaction sibling-DAG false cycle, hoist URL regex, widen OpenAI key pattern

- redaction: seen-set now tracks only the current DFS path (delete pointer
  after recursing) so a shared reference reached via a sibling branch is no
  longer reported as CircularReference; true cycles still detected. (audit
  redaction.go:222)
- redaction: redactURLPasswords compiles its regexp once at package scope
  instead of per call. (audit redaction.go:362)
- secrets: openai_key body allows - and _ so sk-proj-/sk-svcacct- keys match,
  not just legacy sk-<alnum>. (audit scanner.go:35)

* audit: rune-safe cron run-error truncation and commit-subject length

- cronTruncate now cuts on a UTF-8 rune boundary (via cutRuneBoundary) so a
  persisted cron run-error excerpt can't end in a split rune. (audit cron_run.go:179)
- zerogit ValidateMessage counts runes, not bytes, so a valid non-ASCII commit
  subject under 72 chars is no longer rejected. (audit zerogit.go:207)

* audit: report auth-header-only profiles as having a credential

ProviderSnapshot.APIKeySet was true only for a non-empty APIKey, so a profile
authenticated solely via AuthHeaderValue rendered as 'not set' in the command
center. Treat either credential as set. (audit contracts.go:166)

* audit: address review on #174 (credential-presence coverage + consistency)

- Add ProviderSnapshotFromProfile test covering APIKeySet for api-key-only,
  auth-header-only, both, and neither (the AuthHeaderValue path CodeRabbit
  flagged as untested).
- doctor.go: report the provider 'apiKey' diagnostic as set when EITHER APIKey
  or AuthHeaderValue is present, matching ProviderSnapshot.APIKeySet — closing
  the same auth-header-only gap at the other credential-check site.
- scanner_test: also assert the [REDACTED:openai_key] placeholder is present
  (matches the pattern used by the existing redaction test).

* audit: trim credentials + surface doctor credential presence (#174 review)

- ProviderSnapshot test: add whitespace-only api-key / auth-header cases so the
  TrimSpace behavior stays covered.
- doctor.go: trim both APIKey and AuthHeaderValue before the presence check
  (matches ProviderSnapshot.APIKeySet) AND move the indicator off the sensitive
  'apiKey' detail key — check() runs RedactValue, so 'apiKey' was always scrubbed
  to [REDACTED], leaving the set/not-set indicator invisible. Now reported under
  'credentialConfigured' so it actually surfaces; added a doctor table test.

No consumer read the old detail key.

* audit: honor AuthHeaderValue in model discovery + base-URL redaction (#174 review)

Two credential-presence consistency gaps flagged on #174:

- providermodeldiscovery: the /models probe gated on (and sent Authorization
  from) profile.APIKey only, so an auth-header-only profile was skipped/sent
  unauthenticated. Gate via discoveryHasCredential (APIKey OR AuthHeaderValue)
  and build the request with providerio.ApplyAuthHeaders, matching how the live
  providers authenticate (honors AuthHeaderValue, AuthHeader, AuthScheme,
  CustomHeaders). APIKey-only behavior is unchanged.
- zerocommands.redactProviderBaseURL now also redacts AuthHeaderValue if it
  leaks into the base URL (variadic secrets, empties dropped).

Adds regression tests for auth-header-only discovery, discoveryHasCredential,
and auth-header redaction in the base URL.

* audit: doctor credential-presence test parity with contracts_test (#174 review)

Add the 'both' and 'whitespace auth header only' cases so
TestProviderConfigCheckCredentialPresence matches the six cases in
contracts_test.go's TestProviderSnapshotAPIKeySetCountsAuthHeaderValue.
2026-06-12 12:48:24 +05:30
6fb0231df8 TUI scrollback re-architecture, Lime chat surface, and deep-audit fixes (#158)
* docs(design): add Lime TUI prototype and rebuild spec

* tui: remove the zeroline skin system

One design remains in the tree ahead of the Lime rebuild: the zeroline
package, its TUI view/skin plumbing (Options.Skin/ThemeVariant/ThemeDark,
model skin branches, theme picker), and the zeroline CLI subcommand are
gone. /theme keeps its shell-only message.

* tui: replace the cyan palette with the Lime token table

theme.go is rebuilt around the Lime design tokens (docs/design/
zero_tui_lime.html): near-black panels, one lime accent, solid tint
stand-ins for the prototype's rgba overlays. Existing render sites map
onto the new role styles (ink/line/userPrompt/toolName/toolArg) without
layout changes; no hex exists outside theme.go.

* tui: build the Lime chat-surface components

Title bar with brand badge + context window, empty state replacing the
deleted splash (block-art 0, tagline, 1-3 starter suggestions), stream
blocks (user prompt gutter, muted interim with cursor, final-answer
accent rail, done line, bordered notes), tool cards with diff/read/
bash/grep bodies and MiniDot run spinner, borderless composer with
run-state hints, and the grouped status line. Final answers are marked
at append time; resolved tool calls collapse into their result cards.

* tui: fix Stage 2 review findings

Adversarial review of the chat-surface commit confirmed 15 issues, all
fixed here:
- wrapPlainText sliced wide runes by rune count: CJK/emoji prose could
  panic the TUI or emit lines ~2x the measure; split at width instead
- a cancelled run's streamingText leaked into the next turn's interim
  block; cancelRun now clears it
- orphaned tool-call cards (cancelled/errored turns) re-animated with
  the spinner on any later run; the glyph is now scoped to the call's
  own runID
- starter-suggestion digit capture was active while the chips were off
  screen (/clear mid-run); the guard now mirrors the render condition
- prompt submits while a deferred Ctrl+C quit is draining could start a
  run the quit would orphan; submission is blocked while exiting
- the running placeholder advertised ctrl+c (which quits) as the
  interrupt key; it now says esc
- read-card parser expected 'N: text' but read_file emits 'N | text',
  so the gutter and L-range never rendered on real output
- toolCard borders were one column short of the body rows
- diff tint bands now span the full row; NEW FILE renders green on
  addBg; preamble/no-newline lines are unnumbered meta and no longer
  shift hunk numbering
- card bodies and system notes paint the panel surface; the head gains
  the separate faintest arg column (grep target + pattern)
- title-bar overflow now truncates the minimal candidate instead of
  rendering the deleted design's 'ZERO … READY' line
- untracked the stray snake-game.html (left on disk, ignored)

* tui: restyle the interactive surfaces for Lime

Permission prompts render as the amber permission card (PERMISSION
badge, risk readout, key chips); resolved prompts collapse to one line
(allowed once/always/denied · tool) and unprompted allows fold into the
tool card's [auto] tag. Ask-user and spec-review prompts share the card
language with line borders. Autocomplete and picker overlays move onto
the panel/selection tints with the accent ❯ marker; model-picker rows
gain the provider dot and ctx · KEY_ENV metadata from the registry and
provider catalog. /resume renders its list as stacked session cards
(id + age, title, meta). Key handling is untouched everywhere.

* tui: adaptive width tiers, doc updates, final polish

Width tiers re-evaluate from the live width: ≥100 renders the full
spec; 80–99 drops the tool-arg column, header ctx, and the status
'interactive' group; 58–79 drops the diff/read gutters, bares the
badge, and keeps provider+tokens+mode; <58 renders a single-segment
header, rail-less cards, and a mode-only status line. Table-driven
tests cover {58,70,80,100,120} plus a frame-wide invariant that no
emitted line exceeds the terminal at any tier. Card bodies expand tabs
so width math holds. Dead splash-chip machinery (startupCommandNames,
startupOrder) is gone; README's TUI section now describes Lime.

* tui: fix final-review findings across Stages 3-4

A second adversarial review confirmed 14 issues, all addressed:
- permission collapse and tool-card pairing are now run-scoped (rcKey):
  providers with repeating synthetic ToolCallIDs (Gemini gemini_tool_N)
  could attribute a decision or result to a different run's call
- rehydrated always-grants no longer mislabel as 'allowed once'
  (GrantMatched fallback)
- the width invariant now actually holds everywhere: empty-state
  tagline/hint, ask-user rows, permission detail blobs, pending image
  chips, and the sessions trailing hint are wrapped or fitted; the
  invariant test renders the empty state and all of those rows at
  widths 24-120
- every card (permission, ask-user, spec-review, sessions, notes)
  drops side borders on tiny terminals, not just tool cards
- /resume card fields are sanitized against separator bytes from
  user-controlled titles
- the picker's selected row paints its gap so the selBg band is solid
- dead splash helpers (normalizedStartupWidth, countLines, nonEmpty,
  unreachable rowWelcome branch) and stale /theme comments are gone
- README no longer claims transcript scrolling keys or Tab-accept
  behavior that never existed; chatWidth documents its 24-col floor

Tag tui-lime-s4 moves to this commit.

* audit: deep-audit report, TUI scrollback re-architecture, and cross-module fixes

TUI: settled-row flush frontier prints history to native terminal
scrollback (tea.Println, ordered + ack-serialized); View() renders only
the live tail. Full diffs (400-line flush cap) and OSC 8 file:// links
land in history; streamed interim text, cancellation markers, ask_user
exchanges, and composer input history are preserved; run-scoped dedup
keys fix Gemini's repeating tool-call ids; /exit, Ctrl+C-after-Esc, and
cross-session late flushes no longer orphan or contaminate checkpoints.

Cross-module: zero search panic + offset mapping, usage report
robustness, 529 retry, SSE keep-alive watchdog, registry corrections,
update --check on dev builds, MCP ping + mcp list --json secret
redaction, sandbox.network config knob, doctor apiKey presence, atomic
config writes, C1-safe notifications, rune-safe truncation everywhere,
gofmt + vet CI gates, dead glamour dependency dropped.

Full audit report: docs/audit/2026-06-10-deep-audit.md (175 findings).

Co-Authored-By: Claude Fable 5 <[email protected]>

* tui: hide malformed ask_user tool errors

* fix tui malformed tool retries

* fix max-turn finalization

* upgrade tui agent guardrails

* fix coderabbit guardrail findings

---------

Co-authored-by: Claude Fable 5 <[email protected]>
Co-authored-by: Vasanthdev2004 <[email protected]>
2026-06-10 17:18:30 +05:30
9c2e14272b CLI: doctor config validation, autonomy ceiling, changes --base, usage report (#142)
* config: add ValidateFile for structured config diagnostics

* doctor: add offsetToLineCol helper for JSON error positions

* doctor: validate config files in config.validation check

* cli: thread config paths into doctor and degrade on bad JSON

* doctor: inline read, single-parse config validation + utf8 col test

- Remove the osReadFile wrapper; call os.ReadFile directly at its one call site
- Add config.ValidateBytes([]byte) so each config file is read and JSON-parsed
  once in configValidationCheck instead of twice (once for position, once via
  ValidateFile); ValidateFile now reads then delegates to its own unmarshal for
  the path-prefixed error message, keeping its public signature unchanged
- Fix the misleading skip comment in configValidationCheck: configFilesCheck
  only checks path-string presence; the skip is a defensive guard for the
  unreachable case where DefaultResolveOptions passed a non-empty path that
  still fails to read
- Add utf8 multibyte case to TestOffsetToLineCol documenting byte-column
  semantics (column counts bytes, not runes)

* sandbox: add Policy.MaxAutonomy ceiling defaulting to high

* sandbox: normalize both operands in autonomyAllowed to fail closed

* sandbox: clamp grant-allow and unsafe escalation to policy autonomy ceiling

* sandbox: add RequiredAutonomyForBatch helper with fail-closed mapping

* config: add sandbox.maxAutonomy field to file and resolved config

* config: merge sandbox.maxAutonomy across layers, env, and overrides

* cli: thread configured autonomy ceiling into sandbox engine construction

* cli: surface max_autonomy in sandbox policy formatters

* zerocommands: carry max autonomy in sandbox policy snapshot

* sandbox: default empty policy ceiling to high + reason const

Evaluate now treats an empty Policy.MaxAutonomy (from a directly-constructed
Policy that bypasses DefaultPolicy) as High instead of letting it normalize to
Low, which would silently clamp every Medium/High decision to Prompt. The
ceiling is a no-op unless explicitly configured.

Also extracts the "above policy ceiling" clamp reason into a package const
referenced at both engine clamp sites and the related tests, and adds a
non-vacuous engine test proving the empty-ceiling trap is closed.

* zerogit: add base-ref three-dot diff to changes inspect

* zerogit: cover base-ref backward-compat and real-git diff

* zerogit: propagate base ref through change snapshot

* cli: parse changes --base ref and reject on commit

* cli: thread base ref into changes inspect output and help

* changes: redact base in cli summary + guard --base= + rename test

- redactChangeSummary now redacts the Base field alongside Root/Branch/Commit/etc.
- --base= equals-form rejects leading-dash values via flagValueLooksLikeOption, closing the option-smuggling gap
- TestParseNameStatusRenameAndCopy asserts rename/copy three-field lines use the new/destination path with correct status, and confirms two-field modify is unaffected

* Add ParseDiffStat helper for git diff --stat summaries

* Add usage report aggregation over persisted session usage events

* Add zero usage report command over persisted session usage

* Wire usage command into CLI dispatch and help

* usage: validate --since format, fix redaction comments, add tests

Fix 1 (BLOCKING): parseUsageArgs now validates --since with time.Parse
against YYYY-MM-DD; returns exitUsage + "invalid --since %q: expected
YYYY-MM-DD" for bare strings like "foo", unpadded "2026-6-1", or
wrong-separator "06/01/2026". Valid dates are stored unchanged for the
existing lexical comparison.

Fix 2: Replace false "pre-redaction stat" claims in diffstat.go and
usage.go with accurate comments: the --stat summary line carries no
secret-bearing tokens so parsing the already-redacted DiffStat is safe.

Fix 3: Add three tests to usage_test.go —
  - TestRunUsageDaysFilter: stubs deps.now, seeds events on two dates,
    asserts --days 3 includes the recent date and excludes the old one.
  - TestRunUsageInvalidSince: table-driven; verifies "foo", "2026-6-1",
    "06/01/2026" each return exitUsage + validation message, while
    "2026-06-01" returns exitSuccess.
  - TestRunUsageEmptyStore: zero usage events → exitSuccess, output
    contains header and "total" row, no panic.

* doctor: surface type-mismatch offsets and drop colliding flat line/col keys

Probe config validation against config.FileConfig instead of a bare any so
a structurally-valid document with a wrong field type (e.g. maxTurns as a
string) surfaces a *json.UnmarshalTypeError carrying the offset, instead of
losing line/col. Remove the flat top-level details["line"]/["col"] keys
that were overwritten by the last malformed file when several were present;
keep only the unambiguous per-path map entry. Tighten the existing malformed
test to assert concrete per-path line/col and add a type-mismatch test that
exercises the previously-dead UnmarshalTypeError branch.

* sandbox: fail closed on invalid configured autonomy ceiling

An invalid non-empty sandbox.maxAutonomy (e.g. "moderate") previously
survived Resolve (only trimmed, never validated), failed to normalize at the
sandbox bridge, and left the policy unchanged at the default High ceiling.
A typo therefore silently disabled the admin's intended ceiling: fail-open on
a security boundary.

Validate at resolve time (fail loud): Resolve now rejects a non-empty
maxAutonomy that does not normalize, returning a clear error. As defense in
depth, applyConfiguredAutonomyCeiling now clamps an unrecognised non-empty
value to the most restrictive ceiling (low) instead of returning the policy
unchanged, so a bad value can never widen the ceiling even via direct use.
Empty/unset stays valid and keeps the default High ceiling.

Add resolver tests for invalid-fails / valid-resolves and bridge tests for
the fail-closed clamp and valid mappings.

* sandbox: fail closed on malformed autonomy and surface policy resolve errors

Treat a genuinely-invalid request autonomy as the highest tier in the engine
so it exceeds a Medium/Low ceiling and clamps to Prompt instead of being
sanitized to Low and auto-allowing on the grant/unsafe path. Surface
resolveConfig failures in the policy command instead of silently falling back
to the permissive DefaultPolicy, which would misreport trust posture.

* usage: bucket and filter by UTC calendar day, reject empty --session

Normalize RFC3339 timestamps to their UTC calendar date before day bucketing
(report) and before the --since/--days cutoff comparison (CLI) so offset
timestamps land on the correct UTC day and the bucket and cutoff agree;
malformed timestamps fall back to the leading-10 slice. Reject empty
--session/--session-id values with a value-required error matching the --since
validation style.

* doctor: fail on unreadable config files and stop fabricating positions

Surface a present-but-unreadable config path (permissions, is-a-directory) as
a failing per-path validation detail instead of silently skipping it; a
genuinely-missing path stays a skip. Return ok=false for a JSON parse error
that carries no offset so it routes through the no-position ValidateBytes path
rather than fabricating a (1,1) line/col. Assert empty stderr on the JSON
doctor failure path.

* config: make sandbox maxAutonomy resolver tests hermetic

Pass an explicit empty Env to the maxAutonomy Resolve tests so host
environment variables cannot leak in through the nil-Env os.Getenv fallback.

* sandbox: preserve raw autonomy for ceiling check so invalid clamps under default ceiling

Defaulting invalid request.Autonomy to High only clamped under a Medium/Low
ceiling; under the default High ceiling autonomyAllowed(High, High) returned true
and still auto-allowed (fail-open). Keep the raw requested value for the ceiling
check so autonomyAllowed's unknown-tier guard fails it closed under ANY ceiling.
Adds default-High-ceiling regression tests for the unsafe and grant-allow paths.

---------

Co-authored-by: KRATOS <[email protected]>
Co-authored-by: Vasanthdev2004 <[email protected]>
2026-06-08 17:15:57 +05:30
KRATOSandKRATOS 34ad21a551 Add runtime permission and verification event contracts (#82)
* feat: add runtime permission event contract

* feat: stream permission events from exec

* feat: add runtime command snapshots

* feat: add session rewind compaction plans

* feat: add verification event contracts

* fix: harden runtime contract review gaps

* test: assert approved exec stderr contract

* fix: address CodeRabbit CHANGES_REQUESTED items for #82

- Make OnSandboxDecision callback async + panic-safe (non-blocking, recovered) in tools/registry.go per CR.
- Add explicit regression test for ConfigSnapshot when ResolveRuntimeMetadata errors (no secret leak in Message/BaseURL).
- (Many prior items like shapedPayloadPreview for permission/tool events, dual-target conflict test, stderr empty on approved path, Kind/Framework preservation, redactCommand empty slice, etc. were already landed on this branch.)

All relevant tests now pass.

* fix(agent): make sandbox decision available synchronously on Result for permission events

The recent change to invoke OnSandboxDecision asynchronously (to satisfy non-blocking requirement) broke the agent's immediate capture of the decision for building PermissionEvent after registry.RunWithOptions.

- Add SandboxDecision *sandbox.Decision to tools.Result (not serialized).
- Populate it on all sandbox-involved return paths in registry.RunWithOptions (sync, before/while firing async callback for observers).
- In agent executeToolCall, use result.SandboxDecision for buildPermissionEvent (reliable ordering) instead of side-effect capture via the callback.
- The async callback is still supported for any external OnSandboxDecision consumers.

This fixes the two failing agent tests that were causing the cross-platform 'Smoke' CI jobs to fail on this PR:
- TestRunEmitsPermissionEventForPersistentSandboxGrant
- TestRunAppliesSandboxEvenInUnsafeMode

All go tests now pass.

---------

Co-authored-by: KRATOS <[email protected]>
2026-06-06 13:13:08 +05:30
KRATOS 4eacb5b6d3 feat: add M5 git workflow backend (#72)
* feat: add Zero git change backend

* feat: add self verification summaries

* feat: expose git workflow CLI

* fix: address M5 review feedback

* fix: clean up zerogit review nits
2026-06-05 17:32:05 +05:30