feat: major update with network graphs, themes, todo extensions, and more

## New Features

### Network Graph Visualization (Contacts, Calendar, Todo)
- D3.js force simulation for physics-based layout
- Zoom & pan with mouse/touchpad
- Keyboard shortcuts: +/- zoom, 0 reset, Esc deselect, / search, F focus
- Filtering by tags, company/location/project, connection strength
- Shared components in @manacore/shared-ui

### Central Tags API (mana-core-auth)
- CRUD endpoints for tags
- Schema: tags table with userId, name, color, app
- Shared tag components in @manacore/shared-ui

### Custom Themes System
- Theme editor with live preview and color picker
- Community theme gallery
- Theme sharing (public, unlisted, private)
- Backend API in mana-core-auth

### Todo App Extensions
- Glass-pill design for task input and items
- Settings page with 20+ preferences
- Task edit modal with inline editing
- Statistics page with visualizations
- PWA support with offline capabilities
- Multiple kanban boards

### Contacts App Features
- Duplicate detection
- Photo upload
- Batch operations
- Enhanced favorites page with multiple view modes
- Alphabet view improvements
- Search modal

### Help System
- @manacore/shared-help-content
- @manacore/shared-help-ui
- @manacore/shared-help-types

### Other Features
- Themes page for all apps
- Referral system frontend
- CommandBar (global search)
- Skeleton loaders
- Settings page improvements

## Bug Fixes
- Network graph simulation initialization
- Database schema TEXT for user_id columns (Better Auth compatibility)
- Various styling fixes

## Documentation
- Daily report for 2025-12-10
- CI/CD deployment guide

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/calendar/packages/shared/src/types/event.ts

@@ -7,6 +7,18 @@ export interface EventAttendee {
 	status?: 'accepted' | 'declined' | 'tentative' | 'pending';
 }
 
+/**
+ * Event tag with color
+ */
+export interface EventTag {
+	id: string;
+	userId: string;
+	name: string;
+	color: string;
+	createdAt: Date | string;
+	updatedAt: Date | string;
+}
+
 /**
  * How to display all-day events
  */
@@ -92,6 +104,9 @@ export interface CalendarEvent {
 	// Metadata
 	metadata?: EventMetadata | null;
 
+	// Tags (populated when fetched)
+	tags?: EventTag[];
+
 	createdAt: Date | string;
 	updatedAt: Date | string;
 }
@@ -124,6 +139,7 @@ export interface CreateEventInput {
 	color?: string;
 	status?: EventStatus;
 	metadata?: EventMetadata;
+	tagIds?: string[];
 }
 
 /**
@@ -144,6 +160,7 @@ export interface UpdateEventInput {
 	color?: string | null;
 	status?: EventStatus;
 	metadata?: EventMetadata;
+	tagIds?: string[];
 }
 
 /**