Harmonize the two disconnected presence systems into one:
- New shared/collab-presence.ts utility (broadcastPresence, startPresenceHeartbeat)
- Collab overlay now listens to custom presence messages, shows module context in people panel
- Fixed Shadow DOM focus tracking using composedPath() for focus rings through shadow boundaries
- Replaced rNotes custom presence with shared utility (kept sidebar dots)
- Added presence heartbeat to all 27 rApp components with dynamic context strings
- Bumped cache versions in all modified mod.ts files
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett
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