Task Activity Log: auto-log task field changes #29
Description
Summary
Expand task activity logging so status, priority, tag, and project changes appear in the task history.
Current behavior
- Work notes exist and are rendered in the task modal via src/components/ui/work-notes.tsx.
- Updates through src/app/api/tasks/route.ts do not consistently add system entries for field changes.
Target behavior
- Append a system work note on status changes, priority changes, tag edits, and project reassignment.
- Include timestamps and a concise diff summary in each entry.
Scope
- Server-side instrumentation in task update endpoints.
- Minimal UI change, reusing WorkNotes component.
Acceptance criteria
- Editing a task adds a new system note reflecting the field updates.
- Completion status changes include the status transition entry.
- Work notes remain merged via existing merge logic in src/lib/work-notes.ts.
References
- src/app/api/tasks/route.ts
- src/app/api/tasks/[id]/route.ts
- src/components/ui/work-notes.tsx
- src/lib/work-notes.ts