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-help-mobile/src/hooks/useHelpContent.ts

@@ -0,0 +1,51 @@
+/**
+ * Hook for loading and managing help content in mobile apps
+ */
+
+import { useState, useMemo } from 'react';
+import type { HelpContent } from '@manacore/shared-help-types';
+import { mergeContent, createEmptyContent, createSearcher } from '@manacore/shared-help-content';
+import type { UseHelpContentOptions, UseHelpContentResult } from '../types';
+
+export function useHelpContent(options: UseHelpContentOptions): UseHelpContentResult {
+	const { appId, locale, centralContent, appContent } = options;
+	const [loading] = useState(false);
+	const [error, setError] = useState<Error | null>(null);
+
+	// Merge central and app-specific content
+	const content = useMemo(() => {
+		try {
+			const base = centralContent ?? createEmptyContent();
+			if (appContent) {
+				return mergeContent(base, appContent, {
+					appId,
+					locale,
+				});
+			}
+			return base;
+		} catch (err) {
+			setError(err instanceof Error ? err : new Error('Failed to merge content'));
+			return createEmptyContent();
+		}
+	}, [centralContent, appContent, appId, locale]);
+
+	return {
+		content,
+		loading,
+		error,
+	};
+}
+
+/**
+ * Hook for searching help content
+ */
+export function useHelpSearch(content: HelpContent) {
+	const searcher = useMemo(() => createSearcher(content), [content]);
+
+	return {
+		search: (query: string, limit?: number) => {
+			if (!query.trim()) return [];
+			return searcher(query, { limit: limit ?? 10 });
+		},
+	};
+}