Serves skills/daybook-posting/SKILL.md so users/agents can fetch the
posting instructions from the running instance instead of hunting for the
file. The server rewrites the DAYBOOK_URL config line to the request's own
origin, so the text handed to an agent already points at the right server;
the recipient only supplies their token.
- Same auth as /api/capabilities (session or bearer token); no user data.
- Raw text/markdown by default, ?format=json returns {version, url, skill}.
- Advertised via skill_url + a /api/skill methods entry in capabilities.
- Ships in the Docker image (COPY . /app, skills/ not dockerignored).
- Tests for auth, origin rewrite, JSON mode, session auth, capabilities ad.
- docs/api.md + CHANGELOG updated.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
peter
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