The pipeline metrics shim worked correctly through Jun 4 (65 role events,
25 convoys recorded) but silently stopped capturing thereafter. 8 convoy
PRs merged Jun 5-11 (#126-#133) with zero rows logged to
.convoys/.metrics.jsonl. The roles' Metrics sections clearly instruct the
agents to call scripts/log-convoy-event.sh after every hand-off, but the
instruction was skipped during multitask audit fan-outs and longer
sessions where the Metrics section fell out of working context.
Two changes to prevent the silent gap from recurring:
1. .gitignore: drop the `.convoys/.metrics.jsonl` ignore line. Convoy
telemetry now committed in git so gaps surface in PR review. The
script comment was already clear that events contain metadata only —
no code, no prompts.
2. .github/workflows/convoy-metrics-gate.yml: new CI gate that fails any
PR titled `convoy:` if no rows were added to .convoys/.metrics.jsonl
between base and head. Bypass with the `skip-metrics` label + a
documented reason. Non-convoy PRs are no-op.
Also: commits the existing 65-event history to git so future analysis
(and the §10 measurement protocol in agent-pipeline's v0.4 plan) has a
stable baseline to compare against.
Runs on self-hosted axiom runner to inherit the lower GH minutes cost
the Jun 5-11 work already migrated to (PR #132).
Co-authored-by: Cursor <cursoragent@cursor.com>
