Add Community Calendar with recurring entries and admin management

[karolswdev]

Summary

• Community Calendar page (/calendar) with FullCalendar month/week/agenda views, category filter chips, and item detail popovers — aggregates events, polls, announcements, and recurring calendar entries into one unified view
• Dashboard calendar widget showing the current + next week at a glance with color-coded dots, clickable to navigate to the full calendar
• Admin Calendar Entry management (/admin/calendar) with full CRUD, flexible recurrence configuration (daily/weekly/biweekly/monthly/quarterly/yearly), seasonal bounds, and exception management (skip or move individual occurrences to different dates)
• Server-side recurrence expansion that generates individual occurrences for any requested date range, respecting exceptions and seasonal bounds
• 27 passing E2E tests covering dashboard widget, member calendar page, and admin CRUD flows
• Updated user guides (Member, Admin, and main User Guide) documenting all new functionality

What's included

Backend (14 new files)

• 3 migrations (calendar_entries, calendar_entry_exceptions, override_date addition)
• 2 Sequelize models with associations
• 2 services (calendar entry CRUD + recurrence engine, aggregate calendar service)
• 2 controllers, 2 route files, 1 validator
• Routes mounted in app.js

Frontend (5 new files, 5 modified)

• CalendarPage.tsx — FullCalendar with category filters and detail popover
• AdminCalendarPage.tsx — AdminDataTable with recurrence config dialog and exception management
• CalendarWidget.tsx — compact 2-week dashboard widget
• Types, API methods, navigation, and routing additions

Documentation

• Member guide: Community Calendar section + dashboard widget docs
• Admin guide: Calendar Entry Management section with recurrence examples, exception (skip/move) workflows, and best practices
• Main user guide: Both member and admin calendar sections

Test plan

• E2E: 27 tests passing (dashboard widget, calendar page views/filters/navigation, admin CRUD/recurrence/exceptions, auth guards)
• Manual: Create recurring entries (trash weekly, meetings monthly), verify they expand correctly on the calendar
• Manual: Add exceptions — skip a date, move a date — verify calendar reflects changes
• Manual: Verify existing events, polls, and announcements appear on the calendar alongside calendar entries
• Manual: Verify dashboard widget shows items and navigates to /calendar

🤖 Generated with Claude Code