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
We've transformed the Social-Dense Hub into a high-fidelity operational surface.
- BACKEND: Implemented Global Incursion Engine in agent-sessions.ts (N^2 overlap detection) and added the 60m 'Idle' state.
- API: Enriched the sessions payload with full metadata and active conflict arrays.
- HEADER: Delivered 4-state agent stations (Active/Stale/Evicted/Idle) with real-time 'time-ago' timers.
- FEED: Implemented the 'Fire Map' visuals:
* Global Incursion Ticker: High-visibility alerts for agent collisions.
* Local Conflict Badges: Pulsing pills on affected task cards.
- Refactored components for React-static compliance and strict TypeScript safety.
This commit completes the visibility track, allowing the human supervisor to monitor agent presence and friction in real-time.
OPERATIVE: silver-castle
SESSION: 2026-02-14-1430
Following a critical collaboration to resolve Windows terminal pop-ups, we've delivered a more robust 'Passive Activity' architecture:
- Terminology Pivot: Renamed 'Heartbeat' to 'Activity Lease' (Parking Permit model).
- Side-Effect Extension: tools/bb.ts now automatically extends the agent's lease whenever they perform real work (any CLI command).
- Passive Handshake: bb-init.mjs now only performs an initial registration/lease start, with no background loops.
- 100% Silence: Removed all background process spawning, ensuring zero terminal disruption on Windows.
- High Observability: Liveness is still tracked via the 15m threshold, but relies on activity rather than periodic pings.
OPERATIVE: silver-castle
SESSION: 2026-02-14-1330
Our collaboration led to a rigorous 'Session Constitution' where we prioritized observability and concurrency safety.
I've delivered the first four pillars of the backend engine:
1. Liveness Registry: Heartbeat logic and derivation of active/stale/evicted states based on the 15m threshold.
2. Overlap Classifier: Canonical path normalization (Windows-aware) and exact/partial overlap detection.
3. Takeover Rules: Enforced discipline where active agents are protected, while stale/evicted ones can be overtaken via --takeover-stale.
4. Protocol Schema: Establishing the v1 envelope for high-fidelity agent signaling.
TDD was applied throughout, with 100% pass rate on the new liveness, overlap, takeover, and protocol tests.
