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feat: free-lane flake ledger — retry ON in CI, flaky-passes recorded and uploaded

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The runner's attribution-gated flaky-retry pass (cap 5, truncation veto)
was OFF in the required lane and its FLAKY-PASS evidence was console-only —
so a single timing flake red the merge gate while repeat offenders stayed
unenumerable. free-tests.yml now sets GSTACK_FREE_RETRY_FLAKY=1 and points
GSTACK_FLAKE_LEDGER at runner.temp; every flaky-pass appends a JSONL entry
(SINGLE writer: the parent runner — no concurrent-append hazard by
construction; fail-open with a loud warning so a broken ledger can never
red the lane) and the artifact uploads UNCONDITIONALLY — a flaky-pass run
is green, which is exactly when the evidence matters. Wiring pinned by
free-tests-workflow-wiring; ledger behavior unit-tested incl. the fail-open
path. Matches 2026 industry practice (retry for data, quarantine out of
merge-blocking but never out of logging) with the repo's own receipts.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Garry Tan
2026-08-31 04:50:31 +00:00
co-authored by Claude Fable 5
parent 2dabc02447
commit 7f36eacbd2
4 changed files with 142 additions and 0 deletions
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.github/workflows/free-tests.yml
+21
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@@ -129,6 +129,27 @@ jobs:
run: xvfb-run -a bun run test:free
env:
GSTACK_EXPECT_BINARIES: "1"
# WS1 flake telemetry: a single timing flake must not red the only
# required lane — the runner's attribution-gated retry pass (cap 5,
# truncation veto) re-runs failing files once, serially, and a
# clean retry downgrades to a LOUD flaky-pass. Every flaky-pass is
# appended to the ledger (single writer: the parent runner) and
# uploaded below, so repeat offenders are an enumerable series —
# recorded and ranked, never masked. Pinned by
# test/free-tests-workflow-wiring.test.ts.
GSTACK_FREE_RETRY_FLAKY: "1"
GSTACK_FLAKE_LEDGER: ${{ runner.temp }}/flake-ledger.jsonl
# Uploaded unconditionally (not just on failure): a flaky-pass run is
# GREEN — that's the point — so its evidence must survive green runs.
- name: Upload flake ledger
if: always()
uses: actions/upload-artifact@v7
with:
name: flake-ledger
path: ${{ runner.temp }}/flake-ledger.jsonl
if-no-files-found: ignore
retention-days: 90
# The runner streams the full child output to per-run logs under the OS
# tmpdir and prints only the quiet contract to the console. Without this