Add full time-off lifecycle: create/edit/delete with shift conflict
detection, auto-removal from conflicting shifts with admin notification,
shift restoration on admin delete, and hard block on assigning volunteers
with approved time off to shifts.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Propagate context.Context through all exported store/service methods
that perform I/O; use QueryContext/ExecContext/QueryRowContext throughout
- Add package-level sentinel errors (ErrNotFound, ErrAlreadyCheckedIn,
ErrNotCheckedIn) and replace nil,nil returns with explicit errors
- Update handlers to use errors.Is() instead of nil checks, with correct
HTTP status codes per error type
- Fix SQLite datetime('now') → MySQL NOW() in volunteer, schedule,
timeoff, and checkin stores
- Refactor db.Migrate to execute schema statements individually (MySQL
driver does not support multi-statement Exec)
- Fix import grouping in handler files (stdlib, external, internal)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Go backend with domain-based packages (volunteer, schedule, timeoff,
checkin, notification), SQLite storage, JWT auth, and chi router.
React TypeScript frontend with routing, auth context, and pages for
all core features. Multi-stage Dockerfile and docker-compose included.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
