Unify comments, activity, tool calls, and status changes into a single chronological timeline per task.
Single agent_events table stores all timeline events with an actor column (human/junior/system).
comment - Human or Junior markdown commentsstatus_change - Auto-logged when status changesclaim - Jr claimed the tasktool_call - Jr called a tooltool_result - Tool returned result thought - Jr's reasoning/planning textcheckpoint - Jr progress markerguardrail - Guardrail triggerederror - Something failedcomplete - Jr finished workOne unified timeline on task detail page, chronological, with icons per event type.