Release board: what shipped, one-tap prompts, Pages twin

[Jammy2211]

Closes #239. Fourth repo of the readability arc; implements the intake prompt "PyAutoHands build dashboard with one-tap copy-for-Claude commands".

The release board

• autohands/board.py — thin collect() (GitHub REST via gh api + PyPI JSON) + pure render(fmt = md | md-brief | html | json | badge), the Heart dashboard.py pattern. Strictly a past-tense record of execution — versions shipped, tags cut, train outcomes; "is it safe to release" defers (and links) to the Heart's board.
• Honest data: versions come from the version-scheme-max git tag (the tags API is not date-ordered — live data surfaced a junk pull tag and a 2021 tag first); the ship date is the YYYY.M.D the version encodes (the tagged commit's date is the last commit, not the release). PyPI liveness/yank per version. Degraded API sections say "unavailable this render", never fabricate. Run durations use run_started_at so re-attempts don't report multi-day gaps.
• One-tap 📋: header chips copy /release, /release rehearse, /release validate, /build; each failed train run copies /bug Release train: … — <run url>.
• Firewall-clean: owner derived from git remote (release_run.py precedent); the library set is the new declared libraries: list in config/workspaces.yaml; test fixtures use fake names. All repos_sync legs green.
• bin/autohands board verb (dispatcher 4-touch convention).

Publisher

release_board.yml: workflow_run after PyAuto Release + daily 05:30 UTC + dispatch → Pages page (configure-pages enablement: true creates the site on first deploy) + badge.json + step-summary board + the one-line README strip between <!-- hands:begin/end --> (self-commit, [skip ci], retry-on-tip).

README + declutter

• README on the arc pattern: released badge, 4-line organ opening, "(mobile phone dashboard)" board paragraph, Latest release auto-strip, How PyAutoHands works (decide → rehearse → ship → workspaces follow → record published), CLI examples, pointers. The stale "Formerly PyAutoBuild… is being renamed" banner is gone (the rename shipped 2026-07; MIGRATION.md tense fixed, kept as the historical record).
• AGENTS.md: banner condensed to a past-tense note; the executor-primitives prose now distinguishes CLI verbs from workflow-invoked modules (navigator.py etc. were listed ambiguously) and names bin/autohands help as the verb registry.
• AI_POLICY.md + CONTRIBUTING.md → .github/ (zero inbound refs; all four organs now match).

Verification

• 324/324 tests (10 new in tests/test_board.py: every fmt renders, version-scheme ordering + dates, /bug prompts, degraded honesty, badge shape, html self-containment, owner parsing, Heart-link boundary).
• Rendered against live APIs: all five libraries agree at 2026.8.17.1 shipped 2026-08-17, PyPI live; the train history matches gh run list including the two red runs.
• After merge: dispatch release_board.yml → verify the live page, badge, and README strip.

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