Enables multi-user project collaboration mirroring the shared calendar
pattern. Includes ProjectMember model with permission levels, task
assignment with auto-membership, optimistic locking, field allowlist
for assignees, disconnect cascade, delta polling for projects and
calendars, and full frontend integration with share sheet, assignment
picker, permission gating, and notification handling.
Migrations: 057 (indexes + version + comment user_id), 058
(project_members), 059 (project_task_assignments)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Critical:
- C-01: Populate member_count in GET /calendars for shared calendars
- C-02: Differentiate 423 lock errors in drag-drop onError (show lock-specific toast)
- C-03: Add expired lock purge to APScheduler housekeeping job
Warnings:
- W-01: Replace setattr loop with explicit field assignment in update_member
- W-02: Cap sync `since` param to 7 days to prevent unbounded scans
- W-05: Remove cosmetic isShared toggle (is_shared is auto-managed by invite flow)
- W-06: Populate preferred_name in _build_member_response from user model
- W-07: Add releaseMutation to release callback dependency array
Suggestion:
- S-06: Remove unused ConvertToSharedRequest schema
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add max_length constraints to all string fields in request schemas,
matching DB column limits (title:255, description:5000, etc.)
- Add min_length=1 to required name/title fields
- Add ConfigDict(extra="forbid") to all request schemas to reject
unknown fields (prevents silent field injection)
- Add Path(ge=1, le=2147483647) to all integer path parameters across
all routers to prevent integer overflow → 500 errors
- Add max_length to TOTP inline schemas (code:6, mfa_token:256, etc.)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- New Calendar model and calendars table with system/default flags
- Alembic migration 006: creates calendars, seeds Personal+Birthdays, migrates existing events
- CalendarEvent model gains calendar_id FK and calendar_name/calendar_color properties
- Updated CalendarEventCreate/Response schemas to include calendar fields
- New /api/calendars CRUD router (blocks system calendar deletion/rename)
- Events router: selectinload on all queries, default-calendar assignment on POST, virtual birthday event generation from People with birthdays when Birthdays calendar is visible
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>