Show live Workstream Board PR status

[loganj]

🤖

Summary

Workstream coordinators need a compact way to tell whether a board card's linked pull request is still loading, open, or otherwise actionable without leaving the board. This adds pull-request status to Workstream Board cards while preserving the existing per-card fallbacks for unavailable or malformed data.

This is PR 3 of a four-PR Workstream Board stack, stacked on PR 2. It remains an experiment, off by default; enable Workstream Board in Settings → Experiments to use it. The originating discussion is the Buzz workstream channel.

What changes

• Seeds supported pull-request rows as Loading… before status resolution so the board exposes the real pending state instead of appearing empty.
• Resolves canonical Buzz pull requests and GitHub pull URLs to the existing Open · No reviews status presentation, while preserving cached states and local degradation when a status cannot be read.
• Deduplicates subscriptions by canonical pull-request identity and removes stale identities when the board's reference set changes.
• Keeps the capture-only timing seam and relay bridge out of the product diff; the capture exercises the real loading state and ordered event delivery.

The implementation lives on this PR branch in workstreamPullRequestStatus.ts, its tests, and workstream-board-b3-pr.capture.spec.ts.

Related issue

None found. This is an experiment-gated product spike.

Testing

• Exact head f2aa42e9e10d9b986a9f59c8f8c044a5a9878181:
  • Focused Workstream PR status tests: 7/7
  • Relay bridge + continuous capture tests: 4/4
  • Desktop typecheck: pass
  • Full Desktop test suite: 5,004 passed, 0 failed
  • E2E build: pass
  • pnpm check: only four pre-existing Biome findings, disclosed below
• Three independent Royal reviews cleared the immutable head with zero material findings (content scores: Princess Donut 9.6/10, Carl 9.4/10, Mongo 9.0/10).

Acceptance gates

• Supported pull-request rows seed a visible loading state before resolution.
• Canonical Buzz and GitHub pull-request references resolve through one deduplicated status path.
• Cached status, stale-reference removal, and per-card degradation are preserved.
• Continuous relay-backed capture completed before PR creation.
• Three independent Royal reviews passed at the exact PR head with zero material findings.
• Required CI checks are green.
• Maintainer review is complete.

Note

Security may report the known baseline-wide RUSTSEC-2026-0258 / h2 0.4.14 advisory. A separate fix lane owns it; it is unrelated to this Desktop-only diff. pnpm check also reports four pre-existing Biome findings.

Demo

The qualifying uninterrupted capture is the canonical WebM (10.52 seconds, SHA-256 ab15869cf5a09069e1527777adec154f740ecdf455d228e1f57e975eb90938a1). The WebM remains the artifact of record; the animated GIF below is a presentation derivative. A local MP4 transcode is preserved at .scratch/b3-f2-final-video.mp4 (SHA-256 1a4356d766486068aeca7a16580afbea0dcd16247ade7e8b227ca07146943d61) and is not routed through S3/CloudFront.

Loading status	Live board

Canonical open	PR-detail presentation

The canonical-open PNG is intentionally scoped to the repository README surface (SHA-256 772113a880cfdf1434aa6fa773065a42c61769487e5463cdff828eeb3f8dd9f3); it does not claim to show PR detail. The PR-detail presentation frame is extracted from the final navigation outcome.

The capture uses a capture-only Playwright network timing seam: the real kind-1618 PR EVENT and matching EOSE are queued together and released in order after 2.5 seconds. The UI receives the real product loading state; no row state is injected. The rendered Loading… state is held for 1 second before its screenshot.

Stack and review gates

• Base branch: workstream-board/02-live-working at 2dfbd23581783c54eba52d405593fb00fdabc0d7
• Head branch: workstream-board/03-pr-status at f2aa42e9e10d9b986a9f59c8f8c044a5a9878181
• Stack position: PR 3/4
• Originating Buzz channel: Workstream Board tracer-bullet channel
• Royal attestations at the immutable head: Princess Donut 9.6 (bd7ff66d…), Carl 9.4 (aaa4ab26…), Mongo 9.0 (b19027a7…)
• Bridge/parser carry was confirmed untouched by the final fix.

Draft only; no auto-merge.