Add event management system with calendar and CRUD operations

- Add EventCalendar component with FullCalendar integration
- Create event CRUD dialogs and upcoming event banner
- Implement server-side events API and database utilities
- Add events dashboard page and navigation
- Improve dues calculation with better overdue day logic
- Install FullCalendar and date-fns dependencies

utils/types.ts

@@ -432,3 +432,137 @@ export interface DuesCalculationUtils {
   calculateOverdueDays: (member: Member) => number;
   calculateDaysUntilDue: (member: Member) => { daysUntilDue: number; nextDueDate: string } | null;
 }
+
+// Event Management System Types
+export interface Event {
+  id: string;
+  title: string;
+  description: string;
+  event_type: 'meeting' | 'social' | 'fundraiser' | 'workshop' | 'board-only';
+  start_datetime: string;
+  end_datetime: string;
+  location: string;
+  is_recurring: string; // 'true' or 'false' as string
+  recurrence_pattern?: string; // JSON string
+  max_attendees?: string; // null/empty for unlimited
+  is_paid: string; // 'true' or 'false' as string
+  cost_members?: string;
+  cost_non_members?: string;
+  member_pricing_enabled: string; // 'true' or 'false' as string
+  visibility: 'public' | 'board-only' | 'admin-only';
+  status: 'active' | 'cancelled' | 'completed' | 'draft';
+  creator: string; // member_id who created event
+  created_at: string;
+  updated_at: string;
+  
+  // Computed fields
+  current_attendees?: number;
+  user_rsvp?: EventRSVP;
+  attendee_list?: EventRSVP[];
+}
+
+export interface EventRSVP {
+  id: string;
+  event_id: string;
+  member_id: string;
+  rsvp_status: 'confirmed' | 'declined' | 'pending' | 'waitlist';
+  payment_status: 'not_required' | 'pending' | 'paid' | 'overdue';
+  payment_reference: string; // EVT-{member_id}-{date}
+  attended: string; // 'true' or 'false' as string
+  rsvp_notes?: string;
+  created_at: string;
+  updated_at: string;
+  
+  // Computed fields
+  member_details?: Member;
+  is_member_pricing?: string; // 'true' or 'false'
+}
+
+export interface EventsResponse {
+  success: boolean;
+  data: Event[];
+  total?: number;
+  message?: string;
+}
+
+export interface EventCreateRequest {
+  title: string;
+  description: string;
+  event_type: string;
+  start_datetime: string;
+  end_datetime: string;
+  location: string;
+  is_recurring?: string;
+  recurrence_pattern?: string;
+  max_attendees?: string;
+  is_paid: string;
+  cost_members?: string;
+  cost_non_members?: string;
+  member_pricing_enabled: string;
+  visibility: string;
+  status?: string;
+}
+
+export interface EventRSVPRequest {
+  event_id: string;
+  member_id: string;
+  rsvp_status: 'confirmed' | 'declined' | 'pending';
+  rsvp_notes?: string;
+}
+
+export interface EventAttendanceRequest {
+  event_id: string;
+  member_id: string;
+  attended: boolean;
+}
+
+// Calendar subscription types
+export interface CalendarSubscription {
+  user_id: string;
+  feed_url: string;
+  include_rsvp_only?: boolean;
+  created_at: string;
+}
+
+// Event configuration types
+export interface EventsConfig {
+  eventsBaseId: string;
+  eventsTableId: string;
+  defaultEventTypes: string[];
+  maxEventsPerPage: number;
+  cacheTimeout: number;
+}
+
+// FullCalendar integration types
+export interface FullCalendarEvent {
+  id: string;
+  title: string;
+  start: string;
+  end: string;
+  backgroundColor?: string;
+  borderColor?: string;
+  textColor?: string;
+  extendedProps: {
+    description: string;
+    location: string;
+    event_type: string;
+    is_paid: boolean;
+    cost_members?: string;
+    cost_non_members?: string;
+    max_attendees?: number;
+    current_attendees?: number;
+    user_rsvp?: EventRSVP;
+    visibility: string;
+    creator: string;
+  };
+}
+
+export interface EventFilters {
+  start_date?: string;
+  end_date?: string;
+  event_type?: string;
+  visibility?: string;
+  status?: string;
+  user_role?: 'user' | 'board' | 'admin';
+  search?: string;
+}