- All /tasks/{task_id} endpoints now accept both numeric id and task_code string
- All /milestones/{milestone_id} endpoints (misc.py) now accept both numeric id and milestone_code
- Added _resolve_task() and _resolve_milestone() helpers
- GET /config/status reads initialization state from config volume (no wizard dependency)
- MilestoneResponse schema now includes milestone_code field
- Comments and worklog endpoints also accept task_code
- ProjectMemberResponse now includes username and full_name
- Comment list endpoint returns author_username
- ProposeResponse now includes created_by_username
- All serializers resolve User objects to surface human-readable names
- Supports frontend code-first migration (TODO §3.1/3.2)