feat(observer): observer_recall skill — "what was I doing?" everywhere#243
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CODEC's observer watches active window / screen OCR / clipboard / recent files,
but the buffer was RAM-only inside the codec-observer daemon, so chat, voice and
terminal (separate processes) couldn't read it — asking "what was I doing 20
minutes ago?" got "I don't have an observer skill".
- codec_observer.py: the daemon now mirrors its ring buffer to
~/.codec/observer_buffer.json every poll (atomic, best-effort, never breaks the
loop). Local + user-private, same trust boundary as the rest of ~/.codec.
- skills/observer_recall.py: reads that file, parses the asked-for window
("20 minutes ago", "the last hour", "just now", plurals), filters, and gives a
human timeline (apps in order, files touched, on-screen excerpt). Honest when
the window is older than the ~10-min buffer. SKILL_MCP_EXPOSE=False (recalls the
user's screen activity — not for remote callers). Triggers: "what was I doing",
"my recent activity", "observer", etc.
Verified END TO END: restarted codec-observer, it wrote a real buffer file within
seconds; a FRESH process then recalled "Files touched: codec_observer.py, skills,
tests" — exactly the current work, proving cross-process recall. Registered in
dispatch (88 skills). 6 tests. D-1 manifest regenerated. ruff clean.
Live-test: in CODEC chat / voice / terminal, ask "what was I doing 10 minutes
ago?" — it now answers from the observer buffer everywhere, not just one surface.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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The observer buffer was RAM-only in the codec-observer daemon, so chat/voice/terminal couldn't read it ('I don't have an observer skill'). The daemon now mirrors it to ~/.codec/observer_buffer.json and a new observer_recall skill reads it, filters by time window, and summarizes. Verified end to end: a fresh process recalled the live activity. 6 tests, manifest regenerated.