Three related defects in the `review-verdict/h10` gate, all surfaced by the cross-family review of PR #705. #706 race 1 — a stale run could overwrite a fresher verdict, permanently. The race was reproduced live rather than reasoned about (Gitea 1.25.4): with every other workflow stripped, probe PR #722 showed run 7520 (`opened`) finishing 20s AFTER run 7521 (`synchronize`) started. `pull_request_target` runs for one PR genuinely overlap, older finishing last. The issue proposed serializing with a non-cancelling concurrency group. That is REFUTED by measurement: with the group active, runs 7528/7529 still overlapped and 7528 ended 36s after 7529 began. A first probe appeared to show the group working — a negative control with no `concurrency:` key at all showed the same cancellations, revealing Gitea auto-cancels superseded `push` runs on its own and the probe had measured that, not the group. The auto-cancel does not extend to `pull_request_target`. The fix leaves the runs unserialized and instead makes an overtaken run decline to write: count `change_target_branch` events on the PR timeline at start and again just before the POST, and post nothing if the count moved. The COUNT is the key because the branch NAME is ABA-vulnerable (`main -> S -> main` reads `main` at both ends — how #698 route 1 forged its exemption). Abstaining is a handoff, not a stall: every retarget fires `edited`, so the event that makes a run abstain has already queued its successor. `updated_at` was rejected as the key precisely because it moves for comments/labels, which queue nothing. #706 race 2 — a human BLOCKED landing in the unclosable window between the pre-POST re-read and the POST was silently turned green. After an exemption `success` the job now re-reads the per-POST history and repairs its own status to `pending` if a human verdict appeared above a high-water mark taken just before the write. The repair is `pending`, never a copy of the human's state. The id comparison is load-bearing: a presence test would fire forever on a base-mismatched verdict and deadlock that PR's exemption. #707 — `pr-changed-files.sh` bound `.base.ref` and `.head.sha` across the enumeration but never `.base.sha`, so an ordinary advance of `main` mid-paging could drop a code path from an offset-paged diff and leave a complete-looking docs-only list. Now bound from the JSON already fetched (no new round trips). #711 — `.codex/` added to PROTECTED. It mirrors `.claude/hooks/` byte for byte, including the merge-consent hook, so the "a PR that can weaken the gate cannot exempt itself" rule had an incomplete path list. Latent today (untracked), live the moment anyone tracks it. Residuals are stated, not implied: a retarget inside the final round-trip, and the repair being itself a read-then-write. Gitea's status API has no compare-and-set, so neither reaches zero; both now fail toward `pending`. Tests: 398 pass in scripts/tests. Each new guard was mutation-checked — the fence's motion comparison, the untrusted-count gate, the repair POST and the id high-water mark were each neutered in turn and the intended test went red while its positive control stayed green. fixes #706 fixes #707 fixes #711 Decisions-Edit: yes
docs/ — task-signal map
Purpose: route a fresh contributor/agent to the minimal set of docs for the task at hand, instead of a mandatory front-to-back read. Update this doc in the same PR that adds, removes, or retitles a doc below, or that changes which sections a task signal points to.
Start here, always
CLAUDE.md(repo root) — project intro: architecture, layout, dev commands, conventions, Task Completion Protocol.docs/contributing.md— established code patterns (CQRS/MediatR, LanguageExt, the ChicoryTV SPA, EF Core dual-provider migrations, FFmpeg pipeline, analyzers, testing). Read before any non-trivial change.
Task signal → minimal sections
| Signal | Read |
|---|---|
| Session startup / "what's next" (no issue named) | docs/handoffs/chicorytv-issue-queue.md (standing kickoff — two concurrent tracks: orientation ‖ scripts/select-queue.sh 5) |
| Named-issue pickup | Skip queue selection; go straight to focused retrieval — see "Knowledge retrieval" below, then the issue body |
Adding/changing a /api/* endpoint |
docs/api-conventions.md checklist + docs/endpoint-index.md |
| Adding a ChicoryTV SPA screen | docs/spa-conventions.md |
| Scheduling / playout engine work | docs/domain-model.md + decisions catalog rows keyed sched.* (docs/decisions/README.md) |
| Concurrency / optimistic-locking work | docs/api-conventions.md §7a/b/c + docs/decisions/optimistic-concurrency.md |
| Auth / security-surface work | docs/decisions/api-auth-security.md |
| CI / release pipeline work | docs/ci-cd.md + docs/decisions/release-ci-governance.md |
| Live local run / Playwright-MCP verification | docs/e2e-local.md + scripts/e2e-local.sh |
| Adding/changing a UI-E2E browser flow | docs/e2e-local.md → "UI-E2E harness" + scripts/e2e-ui.sh |
| What does a test suite cover | docs/testing.md |
| Legacy Blazor route lookup | docs/blazor-route-parity.md (historical #91 phase (b) inventory) |
| "Why do we do X this way" / challenging a convention | Catalog-first: docs/decisions/README.md (active rows) → follow the row's link to docs/decisions/records/<area>/<topic>.md for full rationale. docs/decisions/archive/<area>/ only for "what did the rule used to be." |
Knowledge retrieval (MemPalace + catalog + Gitea)
These four rules are the seam agreed with server-management#642 (the Gitea→MemPalace exporter). They apply whether the question comes up via MemPalace, a grep, or a stale comment:
- Current conventions/decisions → catalog-first. Start at
docs/decisions/README.md; discover via theErsatzTV-Decisionswing (active) /ErsatzTV-Decisions-Archive(superseded/retired). Resolve by topic/key, never by chasing a file path. - Issue history → evidence, not authority. The
Gitea-ErsatzTVwing is historical narrative that may be stale; it never overrides current Markdown. - The breadcrumb rule (the crux behavior change). A file path named inside a historical issue
comment (e.g. "grep
docs/decisions.md2026-07-17", "see …") is a breadcrumb, not a live pointer. Find the current rule via the catalog / active wing by concept; do not treat the named path as current. (Why it's safe: still-current → in the active wing, breadcrumb resolves; superseded → the active wing returns the successor and a literal follow lands on a record that announces its ownstatus: superseded; retired → the active wing returns nothing, which is itself the signal. The validator-enforced move-to-archive/is what prevents the catastrophic "superseded rule read as current" case.) - Fallback when MemPalace is stale/down:
docs/decisions/README.mdcatalog, thenrg '^`key: <dotted.key>`' docs/decisions/. MemPalace is never authority nor sole fallback.
MemPalace is candidate discovery only — every passage is verified against its cited Markdown/Gitea
source before use. Never derive live queue state from MemPalace, #237, or historical comments; queue
state is live Gitea state, retrieved via scripts/select-queue.sh (see
docs/handoffs/chicorytv-issue-queue.md). Full retrieval contract (altitude/precedence, staleness
bounds, what's mined per issue): docs/handoffs/chicorytv-issue-queue.md → "Knowledge retrieval".
Also present in docs/
docs/domain-model.md— what the app IS: entity glossary, channel→playout→schedule/block concept map, where each concept is edited in the SPA.docs/api-conventions.md— checklist for adding/changing a/api/*endpoint (controllers, DTOs, error mapping, auth, OpenAPI regen, tests).docs/spa-conventions.md— playbook for adding a screen to the ChicoryTV React SPA.docs/e2e-local.md(+scripts/e2e-local.sh) — how to run a live local instance for manual or Playwright-MCP verification.docs/testing.md— testing map: what each*.Testsproject /websuite covers, golden-file nets, the timezone-independence rule, how to run subsets, the per-PR verification gate.docs/blazor-route-parity.md— historical record of the completed #91 phase (b) cutover: the Blazor Server UI is removed and every legacy route now 302-redirects to its SPA equivalent (or falls through to the catch-all →/app). Read it for the full legacy→SPA route inventory.docs/decisions/records/<area>/<topic>.md— one active decision record per file, YAML frontmatter (key/title/status/since/supersedes/superseded-by, plus optionalstale-after/sources— ersatztv#603), rationale prose in the body. The filename is the key, so one-active-record-per-key is a filesystem property (ersatztv#610).docs/decisions.mdand the topic files remain as the lifecycle-schema narrative plus a "Records formerly in this file" index, which is what keeps older date-based pointers resolvable. Generated active view:docs/decisions/README.md(catalog / task router) — start there. Superseded/retired records live indocs/decisions/archive/and are read only for history, never for "what is the current rule."docs/ci-cd.md— build/test/release pipeline, versioning, dependency management.docs/rest-api.md— REST API design doc for ersatztv#2 (goals, conventions, per-slice plan). Largely superseded day-to-day bydocs/api-conventions.md; read this for the original rationale.docs/mcp.md— theErsatzTV.Mcpstdio JSON-RPC MCP server (#58): how it wraps/api/v1as read + cautious-write tools, its config/env vars, auth, security posture, and the tool catalog.docs/channels.md— Channel entity field reference.docs/m3u-xmltv.md— M3U/XMLTV generation overview (ChannelPlaylist,GetChannelGuideHandler).docs/fork-strategy.md— divergence policy vs upstream ErsatzTV.docs/design-sync.md— Claude Design ↔ repo screen workflow (#92).docs/endpoint-index.md— generated REST endpoint index (method/path/operationId/summary per OpenAPI tag). Do not edit by hand; regenerated byscripts/generate-endpoint-index.py/scripts/update-openapi.sh.docs/handoffs/chicorytv-issue-queue.md— static session kickoff prompt + workflow lore. Queue state is live Gitea state, retrieved each session viascripts/select-queue.sh— see that file's standing kickoff for the two concurrent tracks (orientation ‖ selection). ersatztv#237 is a closed, archival historical tracker (superseded bystartup.parallel-orientationindocs/decisions.md) — not a live pointer.docs/tracker-retrofit-triage-237.md— audit trail for the #524 triage of ersatztv#237's 111 comments (method, per-comment classification, totals). Evidence for thedocs.tracker-comment-retrofitdecision; read it only when triaging another over-cap tracker.docs/handoffs/rest-api.md— original handoff prompt for kicking off the REST API work (#2).