Add day+segment fields to observe events and log to events.jsonl
Adds day and segment fields consistently to all segment-related observe
events (detected, described, transcribed). Sense now creates segment
directory before emitting detected event. Supervisor logs any observe
event with day+segment to <day>/<segment>/events.jsonl if dir exists.
- sense.py: Create segment dir, add day/segment/remote to detected
- describe.py: Add day/segment/remote to described event
- transcribe.py: Add day/segment/remote to transcribed event
- supervisor.py: Add segment event logger using dir existence as guard
- CALLOSUM.md: Document new fields and event logging
- AGENTS.md: Add robustness principle about minimizing sync assumptions
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>