Read-only CLI that renders a self-contained HTML sprint board from
gstack's own on-disk state (timeline.jsonl, analytics/*.jsonl,
CHANGELOG.md, TODOS.md, git, gh pr list). No new instrumentation.
Fills a gap /retro (backward-looking) and /landing-report
(VERSION-queue-scoped) don't cover: what stage is each in-flight
branch at right now, across a whole project.
Design doc + 3-round adversarial review (10/10): /office-hours session.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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