STORY:
The session backend needed to aggregate agent health from a live
telemetry stream rather than static bead metadata. This refactor
makes liveness signals real-time and accurate.
COLLABORATION:
We extended the ActivityEvent model with a native 'heartbeat' kind,
updated extendActivityLease() to emit through the activity bus, and
refactored getAgentLivenessMap() to prioritize heartbeat activity
history over stale bead metadata.
DELIVERABLES:
- ActivityEvent extended with 'heartbeat' kind
- extendActivityLease() emits heartbeats through activity bus
- getAgentLivenessMap() prefers telemetry over static metadata
- Registry APIs support projectRoot injection for testing
- Tests verify preference logic via TDD
VERIFICATION:
- 93/93 tests PASSING
- Heartbeat override verified in isolated temp projects
CLOSES: bb-buff.1.3
BLOCKS: bb-buff.3.2, bb-buff.3.3, bb-buff.2.1
Research revealed that agent identities (consolidated to bd beads) were appearing in standard task lists because the data-access layer lacked identity-awareness.
- Refactored read-issues.ts and parser.ts to explicitly exclude beads labeled 'gt:agent' from standard mission flows.
- Verified that agent personas remain targetable by the registry but are invisible to Kanban/Graph/Sessions.
- Added Characterization Test: identity-isolation.test.ts.
This restores the 'War Room' clarity by separating Operatives from Missions.
OPERATIVE: silver-castle
SESSION: 2026-02-14-1630
