nightly: advance sync state to paperclip 1b89a8e (no doc-relevant changes)

Cumulative window v2026.609.0 → 1b89a8e. The only commit added since the
last run (412a04c → 1b89a8e) is a Dockerfile fix removing VOLUME
["/paperclip"] for Railway compatibility — untracked by any watcher and
with no doc impact (the fly.toml volume still mounts at /paperclip).

Drift: 5 records (TRUST_PROXY, OTEL_*) all false positives — real server
env vars the drift checker can't see because it doesn't scan server/src
process.env reads. Confirmed present upstream; documented in the prior run.

No edits applied. Refreshed PENDING.md / SCREENSHOTS_PENDING.md headers
and bumped last_seen_parent_sha + last_run_outcome=no-changes.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

.sync-state.json

@@ -2,8 +2,8 @@
   "branch_mode": "nightly",
   "base_release_tag": "v2026.609.0",
   "base_release_sha": "a0f7d3dabaf5308ade45cae0c64ebd133948dca2",
-  "last_seen_parent_sha": "412a04c964915fd45e15675f064d24332d50f6cc",
+  "last_seen_parent_sha": "1b89a8e3b86a68b1eb59c62863991fc50cb15fd1",
   "last_applied_manifest_hash": "18c709087796eac108c550639c7f5c44697aa932b7872673893311ef40a94ce1",
-  "last_run_at": "2026-06-15T09:27:27Z",
-  "last_run_outcome": "applied"
+  "last_run_at": "2026-06-17T08:57:00Z",
+  "last_run_outcome": "no-changes"
 }

PENDING.md

@@ -1,14 +1,16 @@
 # PENDING — nightly sync manifest
 
-_Regenerated by `/sync-docs` on 2026-06-15 (nightly mode)._
+_Regenerated by `/sync-docs` on 2026-06-17 (nightly mode)._
 
-- **Window:** `v2026.609.0` (`a0f7d3d`) → parent `master` HEAD (`412a04c`) — 59 commits, 427 files (cumulative from last release).
-- **Mode:** nightly. **Drift:** 0. **Reconciliation flags:** none (everything documented in prior runs still exists upstream).
-- **Quarantine cutoff:** 24h. Latest parent commit landed `2026-06-13`, so nothing is currently quarantined — the batch the previous run held (Kubernetes sandbox provider, adapter gateway routing) is now past the window and processed this run.
+- **Window:** `v2026.609.0` (`a0f7d3d`) → parent `master` HEAD (`1b89a8e`) — 60 commits, 428 files (cumulative from last release).
+- **Mode:** nightly. **New this run:** nothing doc-relevant. The only commit added since the previous run (`412a04c` → `1b89a8e`) is `1b89a8e` "remove `VOLUME ["/paperclip"]` for Railway compatibility" — a Dockerfile-only change no watcher tracks. Our deploy guide tells users to mount their persistent volume at `/paperclip` via `fly.toml`, which is unaffected (the `VOLUME` keyword only created an anonymous-volume default). No edit required.
+- **Drift:** 5 records, all **false positives** (`TRUST_PROXY`, `OTEL_EXPORTER_OTLP_ENDPOINT`/`_PROTOCOL`, `OTEL_SERVICE_NAME`/`_VERSION` in `docs/reference/deploy/environment-variables.md`). These are real server env vars (introduced in `937fe62d`/`362c30cc`, documented in the prior run) that the drift checker can't see because it doesn't scan `server/src` feature files where they're read via `process.env` — the known [server-env blind spot](scripts/sync/check-drift.mjs). Confirmed present in parent via code search. No action.
+- **Reconciliation flags:** none (everything documented in prior runs still exists upstream).
+- **Quarantine cutoff:** 24h. Latest parent commit landed `2026-06-15`, already past the cutoff — nothing currently quarantined.
 
 ---
 
-## ✅ Applied this run (committed to `nightly`)
+## ✅ Already applied (committed to `nightly` in prior runs — cumulative)
 
 | Surface | Parent | Target docs |
 |---|---|---|

SCREENSHOTS_PENDING.md

@@ -1,6 +1,6 @@
 # Screenshots pending refresh
 
-Window: `v2026.609.0` → parent `master` HEAD (`412a04c`), nightly run 2026-06-15.
+Window: `v2026.609.0` → parent `master` HEAD (`1b89a8e`), nightly run 2026-06-17. (No UI sources changed since the prior run — the only new upstream commit was a Dockerfile fix; the stale set below is unchanged.)
 
 Stale entries are those whose `depends_on` UI source changed within this cumulative window. 62 of 276 registry entries are affected.