Let the scanner report critical findings without failing. The review-label
gate owns the action-required status and blocking result, allowing the
ci-reviewed label rerun to clear both CI and the PR comment.
If detect fails, all downstream sub-workflows get SKIPPED (they have
needs: detect). all-checks-pass used if: always() and only checked the
sub-workflows — which all showed as 'skipped' (= success) — so it passed
even though the root cause (detect) failed. This made the PR mergeable
despite a broken CI pipeline.
Add detect to all-checks-pass needs so its failure propagates to the
gate job and blocks the merge.
Composite actions cannot access the secrets context — the runner's
template engine rejects secrets.* references at load time with
'Unrecognized named-value: secrets'.
Move APP_ID and APP_PRIVATE_KEY from direct secrets.* references inside
the composite action to inputs passed by each calling workflow. The
fallback logic (GITHUB_TOKEN when APP_ID is empty, for fork PRs) stays
in the composite action's check step.
Replace the long-lived fine-grained PAT (AUTOFIX_BOT_PAT) with short-lived
(1-hour) installation access tokens minted via a new get-app-token composite
action wrapping actions/create-github-app-token@v3.2.0.
The PAT was used in 13 spots across 8 workflow files for gh CLI / GitHub API
calls. The per-repo GITHUB_TOKEN (1,000 req/hr) was getting rate-limited when
multiple workflows fire concurrently (deploy-site, skills-index, ci-timings,
supply-chain-audit, js-autofix). App installation tokens get 5,000 req/hr
per installation and are scoped to the App's permissions, not a user account.
New composite action: .github/actions/get-app-token/
- Wraps actions/create-github-app-token@bcd2ba49 (v3.2.0, SHA-pinned)
- Reads APP_ID + APP_PRIVATE_KEY repo secrets
- Outputs a 1hr installation token via steps.app-token.outputs.token
Requires two new repo secrets (set after creating the GitHub App):
- APP_ID: the App's numeric ID
- APP_PRIVATE_KEY: the PEM private key
App installation permissions needed:
contents: write (js-autofix push, pypi release upload)
pull-requests: write (js-autofix PR create/merge, supply-chain comment)
issues: write (skills-index-freshness issue creation)
actions: write (skills-index workflow trigger)
workflows: write (skills-index triggers deploy-site.yml)
The AUTOFIX_BOT_PAT secret can be deleted once CI passes on this PR.
The comment in js-autofix.yml noting that PAT pushes trigger downstream
workflows is updated — App tokens have the same property (they are not
GITHUB_TOKEN), so the concurrency-cancel loop logic is unchanged.
Replace the static comment-pending + comment-results two-job pattern
with a live-updating comment system that polls the GitHub Actions API
every 15s, re-assembles the review comment from whatever results are
available, and upserts it via the <!-- hermes-ci-review-bot --> marker.
The comment updates in real time as each job finishes — no waiting for
the full pipeline.
Every CI job that wants to appear in the review comment emits a
review_status output — a JSON array of objects, each with a source
and a results array:
[
{
"source": "review-label-gate",
"results": [
{"kind": "action_required", "title": "...", "summary": "...",
"how_to_fix": "..."},
{"kind": "info", "title": "...", "summary": "..."}
]
},
{
"source": "ci timing",
"results": [
{"kind": "warning", "title": "CI timings", "summary": "...",
"detail": "...", "link": "..."}
]
}
]
One job can emit multiple results of different kinds. The source field
is used to exclude the corresponding job from the synthesized error
list (case-insensitive, hyphen-normalized matching against GitHub
Actions job display names).
| job | source | kind (on failure) | section |
|----------------------------|--------------------------|---------------------------|----------------------|
| review-labels | review label gate | action_required / info | Action required |
| lockfile-diff | lockfile-diff | action_required | Action required |
| ci-timings | ci timing | warning / info | Warnings |
| supply-chain scan | supply chain | error / (none) | Job failures |
| supply-chain dep-bounds | supply chain | action_required / (none) | Action required |
| osv-scanner | osv scan | warning / (none) | Warnings |
| uv-lockfile-check | uv.lock check | action_required / (none) | Action required |
| history-check | unrelated histories | action_required | Action required |
| contributor-check | contributor attribution | action_required | Action required |
Jobs that find nothing emit [] (empty array) — no noise info items.
A single comment-live job polls the GitHub Actions API every 15s,
classifies jobs into (completed, pending), assembles the comment, and
upserts it. Merges review_status outputs from all needs jobs via
toJSON(needs.*.outputs.review_status), and downloads the ci-timings
artifact when it becomes available. Shows commit SHA + message below
the header.
The assembler has ZERO job-specific knowledge. It just:
1. collect_from_statuses() — flattens all nested status objects into ReviewItems
2. collect_failed_jobs() — synthesizes errors for failed jobs with no declared status
3. _attach_job_urls() — fills in per-job log links for ALL items
4. render_comment() — groups by severity, renders with group headers
Each item shows links inline next to the title: View report (job-emitted
URL) and View job (auto-attached logs link). Each info item is its own
collapsible <details> block.
# ૮ >ﻌ< ა ci review
running on abc1234 — commit message first line
## ❌ Job failures
### {title} · [View job](url)
{summary}
## ⚠️ Action required
### {title} · [View job](url)
{summary}
**How to fix:**
{how_to_fix}
## ⚠️ Warnings
### {title} · [View report](url) · [View job](url)
{summary}
{detail}
<details><summary>{title}</summary>
{content}
</details>
Still running 3 jobs: ci-timings, docker
- test_assemble_review_comment.py (48 tests): collect_from_statuses,
collect_failed_jobs with exclude_sources, _attach_job_urls,
render_comment (group headers, inline links, commit info, per-item
details, pending footer), assemble integration
- test_live_comment.py (16 tests): classify_jobs pure function
- test_timings_report.py (10 tests): generate_review_status nested format
- test_lockfile_diff.py (6 tests)
- test_classify_changes.py (32 tests, pre-existing)
The Windows installer E2E scaffolding (e2e-windows.yml + AutoHotkey
helper + button screenshots) lands in its own draft PR (ethie/windows-e2e)
targeting this branch, so it can be reviewed + iterated independently of
the desktop E2E suite. Both jobs remain `if: false` until the installer
E2E is ready to run.
The summary step previously linked to the run's /artifacts page generically.
Now it links the specific artifact download URLs from each upload step's
artifact-url output. Reordered the steps so uploads run before the summary
(since the summary needs their outputs), and added id: to each upload step.
Each artifact gets its own clickable link:
- playwright-test-results (all screenshots + traces)
- playwright-report (interactive HTML report)
- visual-diffs (just the diffed screenshots, PR-only)
The visual diff summary told reviewers to 'download and open to compare'
instead of linking to the actual run's artifacts page. Now links directly
to the run's /artifacts page and lists both artifacts with descriptions.
Also, screenshots that matched their baselines were never written to
test-results/, so the artifact only contained screenshots that diffed.
Now the actual screenshot is always written to the output dir regardless
of match/diff, so CI artifacts include every screenshot.
Adds a full desktop Playwright E2E suite that launches the Electron app
against a mock inference server, exercising the full boot chain:
electron -> hermes serve -> mock provider -> renderer
Includes:
- Mock OpenAI-compatible inference server (mock-server.ts)
- Shared fixtures with sandbox isolation (credentials, HERMES_HOME,
userData, fixed window-state.json for reproducible screenshots)
- Test specs: boot, boot-failure, onboarding, mock-backend-setup, chat,
and packaged-app launch
- Visual regression: expectVisualSnapshot() wraps toHaveScreenshot in
try/catch so diffs are reported without failing the test suite
- CI workflow: xvfb at 1280x1024, baseline cache from main
(--update-snapshots on main, compare on PRs), step summary table with
diff/actual/expected image links, dedicated visual-diffs artifact
- dev:mock script for local fake-provider development
- test:e2e:visual + test:e2e:update-snapshots scripts using cage
- .gitignore: *-snapshots/ (baselines cached in CI, not committed)
Adds a Windows E2E workflow that downloads the built installer, runs it via AutoHotkey automation (install-hermes-desktop.ahk), and launches the installed app. Includes button reference screenshots for the AHK image matching.
A PR more than 100 commits ahead of its merge-base paginates the compare
endpoint; pages after the first carry files: null, so the bare .files[]
made jq die with 'cannot iterate over: null' on every retry and forced
the classifier's fail-open path (all lanes on, ci_review gate demanding
a label with zero CI-sensitive files in the diff). .files[]? keeps the
page-one file list and ignores the null tail.
#66373 swapped GITHUB_TOKEN -> AUTOFIX_BOT_PAT across the workflows and
#66577 restored the `|| github.token` fork fallback for detect-changes and
the label gates -- but it missed the ci-timings "Collect timings and
generate report" step, which still passes a bare AUTOFIX_BOT_PAT. On fork
PRs that PAT is empty, so timings_report.py hard-fails at
expect_env("GITHUB_TOKEN") before it can reach its own "degraded run must
never redden the PR" soft-fail path. Every fork PR gets a red run from this
advisory job (e.g. #66573).
- ci.yml: apply the same `secrets.AUTOFIX_BOT_PAT || github.token` fallback
to the timings step. github.token has `actions: read`, enough to read the
run's job/step durations on forks.
- timings_report.py: treat a missing/empty GITHUB_TOKEN as a degraded run
(TimingsUnavailable) instead of a hard ValueError, so this whole class of
failure can never redden a PR again even if a future workflow drops the
token. Still writes no JSON, so no empty baseline is ever cached.
#66373 swapped GITHUB_TOKEN -> AUTOFIX_BOT_PAT across the workflows. That
PAT is empty on fork PRs (forks get no repo secrets), which broke every
fork PR two ways:
1. detect-changes classified with the empty PAT -> the compare API failed
all 3 retries -> the classifier failed open and force-enabled the
ci_review lane on EVERY fork PR.
2. The ci-reviewed / mcp-catalog-reviewed label gates then read labels with
the same empty PAT via a hard-failing retry step -> the job failed with
no recovery a fork contributor could perform (they can't self-add the
label; re-running can't fix it).
Restores the pre-#66373 fork-safe behavior without reverting the commit's
real improvements (job timeouts, per-file flake retry, network-install
retries):
- detect-changes + ci.yml: token falls back to the built-in read-only
github.token when AUTOFIX_BOT_PAT is empty. On main it uses the PAT
(authoritative); on forks it uses github.token, which can read the
public compare endpoint. (An input `default:` only applies on omission,
not on an empty passed value — hence the explicit `|| github.token`.)
- lint ci-review + supply-chain mcp-catalog gates: restore the inline
`gh pr view ... || true` label read with the github.token fallback,
dropping the hard-failing retry "Fetch PR labels" step. Graceful
degrade to "label absent" on an API blip, same as before #66373.
Same-repo enforcement is unchanged (byte-identical logic; the PAT is still
used there). Fork PRs classify correctly and the gates read labels via the
read-only token exactly as they did before the regression.
* feat(attribution): conflict-free contributor mappings via contributors/emails/ directory
The AUTHOR_MAP dict in scripts/release.py was a merge-conflict magnet:
every concurrent salvage PR appended entries to the same lines of the
same file, so parallel PRs re-conflicted on every merge to main.
New system: one file per email under contributors/emails/ — filename is
the commit-author email, first non-comment line is the GitHub login.
File additions never conflict, so any number of PRs can add mappings
concurrently.
- scripts/release.py: AUTHOR_MAP is now LEGACY_AUTHOR_MAP (frozen)
merged with the directory at import time (directory wins). All
existing consumers (resolve_author, contributor_audit.py) unchanged.
- scripts/add_contributor.py: idempotent CLI to add a mapping; refuses
conflicting reassignments (incl. against the legacy map), validates
email/login shapes.
- contributor-check.yml: attribution gate now accepts a mapping file OR
a legacy entry; failure message prints the exact add_contributor
command. Also auto-resolves bare <login>@users.noreply.github.com
emails is intentionally NOT added (kept id+login form only, matching
previous behavior).
- contributor_audit.py: guidance now points at add_contributor.py.
- tests/scripts/test_contributor_map.py: 12 tests covering loader,
merge precedence, CLI idempotency/conflict/validation, subprocess E2E.
* feat(ci): one-shot per-file flake retry in the parallel test runner
A failing test FILE is re-run once in a fresh subprocess. Pass-on-retry
counts as green but is loudly reported in a '⚠ FLAKY' summary section
(with both attempts' output preserved) so the flake gets fixed instead
of eating a full-run rerun. Deterministic failures fail both attempts —
regressions cannot be laundered green.
- --file-retries N / HERMES_TEST_FILE_RETRIES (default 1, 0 disables)
- E2E verified: simulated first-run-fail flake goes green with banner;
deterministic failure still exits 1; retries=0 restores old behavior.
This converts the dominant CI failure mode (one timing-sensitive test
flaking a 4600-test shard, requiring a manual 10-minute rerun and an
agent triage loop) into a self-healing retry that costs one file's
runtime.
* test(approval): loosen wall-clock perf bounds 0.15s -> 2.0s
These guard against catastrophic regex backtracking (seconds-to-minutes
class), but 0.15s is within scheduler-stall noise on loaded shared CI
runners — test_max_accepted_separator_free_input_is_fast failed a CI
shard this week on runner load alone. 2.0s still catches the regression
class with zero flake surface.
* fix(ci): job timeouts everywhere + retries on all network installs
Reliability pass over every workflow:
- timeout-minutes on all 21 jobs that lacked one (a hung job previously
burned the 6-hour default runner budget)
- ./.github/actions/retry wrapped around every network-fetching install
that lacked it: pip installs (deploy-site, skills-index), npm ci
(deploy-site website, upload_to_pypi web + ui-tui), uv sync (docker
test deps). Deterministic build steps (npm run build) deliberately
NOT retried — split into separate steps so a real build failure fails
fast instead of retrying 3x.
* docs(agents): document the file-retry flake policy
* fix(ci): curl retries on deploy hook + skills-index probe
* fix(ci): kill the remaining transient-failure classes in workflows + Dockerfile
From the workflow reliability audit:
- tests.yml: duration-cache restore had NO restore-keys while saves use
run_id-suffixed keys — the cache never matched once, so LPT slicing
always ran blind and unbalanced slices pushed heavy files toward the
per-file timeout. One-line restore-keys fixes slice balancing.
- Label gates (lint ci-reviewed, supply-chain mcp-catalog-reviewed):
'gh pr view || true' turned an API blip into 'label absent' → false
BLOCKING failure. Now 3x retry, and API failure is reported as an API
failure instead of a missing label.
- detect-changes action: compare API retried before failing open (was
silently running all lanes on any blip).
- uv-lockfile-check: 'uv lock --check' resolves against PyPI — retried
so registry blips don't read as 'lockfile stale'.
- docker.yml merge job: imagetools create retried (Docker Hub eventual
consistency on just-pushed digests).
- Dockerfile: apt-get Acquire::Retries=3; s6-overlay ADDs converted to
curl --retry 3 (ADD cannot retry; checksums still enforced); npm
--fetch-retries=5; playwright chromium fetch retried 3x.
- Advisory artifact uploads (per-slice durations, ci-timings report)
get continue-on-error so an artifact-service blip can't fail a green
test slice.
* fix(tests): kill the two root-cause flakes — leaking pre-warm timer + env-dependent provider list
- test_tui_gateway_server.py: session.create / non-eager session.resume
arm a 50ms threading.Timer (_schedule_agent_build) that outlives its
test and fires into the NEXT test's _make_agent mock, racily
corrupting captured state (the recurring session_resume shard
failures). Replaced the per-test whack-a-mole stub with a module-wide
autouse fixture; the 3 worker-lifecycle tests that genuinely need the
deferred build opt back in via @pytest.mark.real_agent_prewarm (new
marker in pyproject).
- test_api_key_providers.py: PROVIDER_ENV_VARS is now derived from the
live PROVIDER_REGISTRY instead of a hand-list that had drifted
(missing HF_TOKEN / DEEPINFRA_API_KEY) — resolve_provider('auto')
tests failed on any machine with HF_TOKEN exported. E2E-verified with
HF_TOKEN/DEEPINFRA_API_KEY set: 42/42 pass.
* test: de-flake 30 timing-sensitive test files for loaded CI runners
Root-cause fixes from the flake audit (session-DB mining + repo sweep):
Event-based sync instead of sleep-sync:
- title_generator: mock sets threading.Event, wait(10) replaces
sleep(0.3) hoping the daemon thread got scheduled
- docker zombie_reaping / profile_gateway: poll-for-state helpers
replace fixed 1-3s sleeps (s6 transitions + SIGCHLD reaping are async)
- process_registry tree test: select()-bounded readline replaces an
unbounded blocking read (parent wedge now fails THIS test with a clear
message instead of an opaque rc=124 file kill); SIGTERM grace 1s->2s
(the 1s partition window mid-interpreter-startup is how a child PID
escaped the live-system guard in CI)
Timeout raises (loaded 8-way-sliced runners see ~5s scheduling floors;
all of these complete in ms-to-1s when healthy so the raises cost
nothing on green runs):
- subprocess/thread waits <= 2s raised to 10-15s across mcp_tool,
mcp_circuit_breaker, mcp_reconnect_retry_reset, mcp_parked_self_probe,
mcp_cancelled_error_propagation, registry, clarify_gateway, interrupt,
voice_cli_integration, docker_environment, session_store_lock_io,
planned_stop_watcher, cli_interrupt_subagent, thread_scoped_output
(joins now also assert not is_alive() so stragglers fail loudly)
- wall-clock discrimination ceilings loosened where the guarded hang is
10x larger: local_background_child_hang 4s->10s, interrupt_cleanup
setup 5s->20s + pgid-exit 30s->60s, mcp_stability grandchild spinup
5s->15s, protocol/gil-starvation fast-handler 0.5s->2s,
iso_certify_seam 1.5s->5s, wait_for_mcp_discovery 0.1s->1s
- narrow assertion windows widened: honcho first-turn wait 0.4..0.65 ->
0.25..2.0 (property is bounded-not-hung, not an exact wall-clock);
compression fork-lock TTL 1s->3s (12 refresh chances per lease);
compression-lock expiry margins symmetric (ttl 0.05->0.5, sleep 1.0)
- telegram hung-DNS bound 1.0->1.4 (fake hang is 1.5s — must stay under)
* fix(tests): repair indentation from de-flake batch edit
* fix(tests): harden env isolation and replace remaining sleep-sync races
The full 42k-test run and complete npm check surfaced three more classes:
- Environment isolation: local ~/.honcho defaultHost and SSH_* variables
leaked into Python/TUI tests. Pin the default Honcho host in the
hermetic fixture, isolate the one fallback test from ~/.honcho, and
blank SSH_* around terminalSetup tests. This flipped 20 false failures
back to deterministic behavior on developer machines.
- Background-thread sleep-sync: Honcho async writer tests patched
time.sleep globally, then busy-polled with that same mocked sleep. Under
full-suite load the poller could starve the writer. Each test now waits
on an Event emitted by the exact flush/retry transition; 30/30 passed
under 15-way contention.
- Desktop streaming: the test slept 80ms and assumed a 500ms timer could
not fire before its assertion. A loaded runner descheduled the test for
>500ms and both chunks arrived. Producer controls now gate second-chunk
and completion transitions explicitly.
Also make file-retry observability complete: a self-healed flaky file now
prints BOTH attempts' full output in the FLAKY summary. Two behavioral
runner tests prove pass-on-retry is green+loud+traceback-preserving, while
a deterministic failure remains red.
* refactor(ci): use gh bot pat, better retries
refactor(ci): use retry action for PR label fetch
the retry action now captures stdout as a step output, so it can serve
double duty: retry + output capture for commands like 'gh pr view' whose
result must be consumed by later steps.
Retry action gains:
- 'stdout' output (heredoc-delimited to preserve newlines)
- tee to temp file so stdout still streams to the job log
- step id 'retry' for output reference
Both lint.yml and supply-chain-audit.yml now use the retry action
directly with 'command: gh pr view ...' and read
steps.<id>.outputs.stdout.
ci: use AUTOFIX_BOT_PAT for all gh CLI / GitHub API auth
Replace secrets.GITHUB_TOKEN and github.token with
secrets.AUTOFIX_BOT_PAT across all workflows and composite actions
that use the gh CLI or GitHub API. The PAT has consistent permissions
across fork PRs (where GITHUB_TOKEN is read-only), avoids API rate
limit sharing with the default token, and is already used by
js-autofix.yml for the same reasons.
19 sites swapped across 9 files:
- lint.yml (3): label fetch, comment post/edit, comment update
- supply-chain-audit.yml (5): scan, critical comment, unbounded dep
comment, label fetch, mcp-catalog comment
- lockfile-diff.yml (1): PR comment post/update
- skills-index-freshness.yml (1): issue creation on degraded probe
- skills-index.yml (2): index build, trigger deploy workflow
- upload_to_pypi.yml (2): release view poll, release upload
- ci.yml (1): timings report
- deploy-site.yml (2): skills index crawl
- detect-changes/action.yml (1): compare API call
---------
Co-authored-by: ethernet <arilotter@gmail.com>
generate-patch now emits a has-fixes job output (true/false).
apply-patch is gated on it via `if: needs.generate-patch.outputs.has-fixes == 'true'`,
so when `npm run fix` produces no diff, the privileged job is skipped
entirely — no runner allocation, no redundant checkout/download/push/PR.
git diff on a lockfile is unreadable: npm reorders entries, rewrites
integrity hashes, and moves packages between nesting levels, so a
one-line package.json bump produces a thousand-line textual diff.
scripts/ci/lockfile_diff.py instead parses the `packages` map out of
both versions of every tracked package-lock.json (via `git show`),
reduces each to {install path: version}, and set-diffs the maps —
reorder/hash churn vanishes, leaving only actual version movement
(added / removed / updated, with nested dedup copies tracked
separately).
The lockfile-diff workflow posts the result as a Markdown table in a
PR comment gated behind a hidden marker: subsequent pushes PATCH the
existing comment instead of stacking new ones, and a push that reverts
all lockfile changes updates the comment to say so. Advisory only —
never fails on findings; fork PRs (read-only token) degrade to a
warning.
Wired through the ci.yml orchestrator with a new npm_lock lane in
classify_changes.py (fails open on .github/ changes per the existing
contract).
When the bot PR auto-merges, main moves — which the poll loop detects
as 'main moved' and tries to close the PR. But the PR is already
merged, so gh pr close fails with an error.
Fix: when main moves, re-check PR state before closing. If it's
already MERGED, exit cleanly. Also make gh pr close non-fatal (|| true)
as a belt-and-suspenders guard against the same race on the other
close paths.
The js-autofix workflow used 'gh pr create --json number --jq .number'
to capture the PR number, but 'gh pr create' doesn't support --json.
Extract the PR number from the URL that 'gh pr create' prints instead.
* fix(js): never format package-lock.json
prettier and eslint should never touch package-lock.json. main has a
repo rule requiring team approval when lockfiles change, so an autofix
PR touching it would hang waiting for review.
- Add .prettierignore at repo root
- Add '**/package-lock.json' to eslint shared config ignores
* fix(ci): js-autofix pushes via PR instead of direct push to main
Main now has repository rules requiring pull requests + required status
checks ("All required checks pass"), so the workflow's direct push to
main is rejected with GH013 every time eslint --fix produces changes.
Switch apply-patch to push to a dedicated bot/js-autofix branch, create
or update a PR, and enable auto-merge (squash). The PR auto-merges once
CI passes. If CI fails or main moves, the PR is auto-closed and the
branch deleted — the next run re-applies on the current state.
The two-job security split is preserved:
- generate-patch stays unprivileged (contents: read only) — it runs npm
on an ephemeral runner with zero push permissions.
- apply-patch (contents: write + pull-requests: write) still never runs
npm, never installs anything, never executes repo code — it applies
the trusted patch artifact and delivers it via PR.
Add a 'lint' job to the JS tests workflow that runs 'eslint --fix'
across all discovered npm workspaces (same matrix as the check job).
Fixable issues auto-correct and don't block; eslint exits non-zero
only when un-fixable errors remain.
Also fix duplicate 'needs: workspaces' in the check job.
The set-matrix step wrote the npm workspace query result directly to
$GITHUB_OUTPUT. If discovery ever produced [], the matrix would expand
to zero check jobs, leaving the reusable workflow green without running
any JS/TS checks.
Now the step validates the result is a non-empty array before emitting
it, and exits 1 with a GitHub annotation if it's empty or jq failed.
The 'CI timing report' job is pure observability — it collects per-job/step
durations from the GitHub API after the run and publishes an HTML gantt
report + PR-vs-main timing diff. It gates nothing (all-checks-pass does not
include it), yet it could redden a PR: the script makes dozens of paginated
API calls with the shared repo GITHUB_TOKEN and had zero retry handling, so
a single 403 (rate-limit burst when several PRs run CI concurrently) failed
the job. Observed twice in a row on PR #59805.
- api_get(): retry 403/429/5xx and connection errors with exponential
backoff, honoring Retry-After / X-RateLimit-Reset (max 5 attempts, 120s
cap). Non-transient statuses (404 etc.) still fail fast.
- main(): exhausted retries raise TimingsUnavailable, caught to emit a
degraded summary line + placeholder HTML artifact and exit 0 — a metrics
collector must never fail the PR's checks. No timings JSON is written on
the degraded path so an empty baseline can never be cached.
- ci.yml: baseline-save steps on main skip gracefully when no JSON exists.
Verified with a mocked urlopen harness: retry-then-success (3 attempts),
exhausted-retries -> TimingsUnavailable, 404 fails fast without retry,
degraded main() exits 0 with summary + placeholder and no JSON, and the
--from-json happy path is unchanged.
lint.yml inlined github.head_ref (the fork PR branch name, attacker-
controlled) into the diff-summary run: block. GitHub expands ${{ }} into
the script text before bash tokenizes it, so a branch like x$(id) runs on
the lint runner. The pull_request trigger keeps the token read-only, but
the sink still allows CI resource abuse and cache/artifact tampering, and
would become RCE-with-secrets under pull_request_target.
Route head_ref through an env var (env values are not subject to expression
injection) and reference "$HEAD_REF". Apply the same to the two docker.yml
sites that interpolate github.event.release.tag_name.
Fixes GHSA-jpw6-c7jr-c56v, GHSA-2843-hjmf-7x96.
Credit: @technotion, @youngstar-eth.
