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>

packages/shared-theme/src/index.ts

@@ -28,11 +28,29 @@ export type {
 	StartPageConfig,
 	WeekStartDay,
 	GeneralSettings,
+	// Custom & Community Themes Types
+	ThemeColorsInput,
+	CustomTheme,
+	CreateCustomThemeInput,
+	UpdateCustomThemeInput,
+	CommunityTheme,
+	CommunityThemeQuery,
+	PaginatedCommunityThemes,
+	PublishThemeInput,
+	ThemeEditorState,
+	CustomThemesStore,
+	CustomThemesStoreConfig,
 } from './types';
 
 // User Settings Constants
 export { DEFAULT_GLOBAL_SETTINGS, DEFAULT_GENERAL_SETTINGS } from './types';
 
+// Theme Variant Categories
+export { DEFAULT_THEME_VARIANTS, EXTENDED_THEME_VARIANTS } from './types';
+
+// Custom Theme Constants
+export { MAIN_THEME_COLORS, EXTENDED_THEME_COLORS, THEME_COLOR_LABELS } from './types';
+
 // Constants
 export {
 	THEME_VARIANTS,
@@ -63,6 +81,9 @@ export { createA11yStore } from './a11y-store.svelte';
 // User Settings Store
 export { createUserSettingsStore } from './user-settings-store.svelte';
 
+// Custom Themes Store
+export { createCustomThemesStore } from './custom-themes-store.svelte';
+
 // Utils
 export {
 	isBrowser,