Context

PR #811 implements GET /api/v1/agents/{agent_name}/activity with support for lifecycle events (hired, fired, promoted, demoted, onboarded, offboarded, status_changed) and task completion events (task_completed).

Issue #772 originally specified 10 event types. The following 5 are not yet implemented because their underlying data sources are not persisted/accessible as queryable records:

Missing Event Types

• task_started -- requires a task lifecycle event or start timestamp in TaskMetricRecord
• tool_used -- requires persisted tool invocation records
• delegation_sent -- requires persisted delegation event records
• delegation_received -- requires persisted delegation event records
• cost_incurred -- requires granular cost event records (beyond task-level cost in TaskMetricRecord)

Approach

Each event type needs:

1. A persisted data source (new repository or extended existing one)
2. A converter function in hr/activity.py (like _lifecycle_to_activity and _task_metric_to_activity)
3. Integration into merge_activity_timeline to accept the new data source
4. Controller update to fetch and pass the new data
5. Unit tests for the converter and merged timeline

Parent

• feat: major web dashboard UX overhaul #762 (Dashboard rebuild)
• Related: feat: agent performance metrics and activity timeline endpoints #772 (original activity endpoint issue)