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-content/content/getting-started/de/welcome.md

@@ -0,0 +1,29 @@
+---
+id: guide-welcome
+title: Erste Schritte
+description: Lerne die Grundlagen und starte schnell durch
+difficulty: beginner
+estimatedTime: 5 Minuten
+order: 1
+language: de
+---
+
+## Konto erstellen
+
+Beginne mit der Erstellung deines kostenlosen Kontos. Du kannst dich mit deiner E-Mail-Adresse registrieren oder Google/Apple für eine schnellere Anmeldung nutzen.
+
+## Dashboard erkunden
+
+Nach dem Einloggen siehst du dein Dashboard. Dies ist deine Zentrale, von der aus du auf alle Funktionen zugreifen und wichtige Informationen auf einen Blick sehen kannst.
+
+## Einstellungen anpassen
+
+Besuche die Einstellungen, um dein Erlebnis zu personalisieren. Du kannst anpassen:
+
+- **Design**: Wähle zwischen hell, dunkel oder Systemmodus
+- **Sprache**: Wähle deine bevorzugte Sprache
+- **Benachrichtigungen**: Konfiguriere, wie du benachrichtigt werden möchtest
+
+## Hilfe jederzeit verfügbar
+
+Wenn du Hilfe brauchst, klicke auf das Hilfe-Symbol oder besuche den Hilfe-Bereich. Du kannst auch unser Support-Team kontaktieren, wenn du Fragen hast.

packages/shared-help-content/content/getting-started/en/welcome.md

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+---
+id: guide-welcome
+title: Getting Started
+description: Learn the basics and get up and running quickly
+difficulty: beginner
+estimatedTime: 5 minutes
+order: 1
+language: en
+---
+
+## Create Your Account
+
+Start by creating your free account. You can sign up with your email address or use Google/Apple sign-in for a faster setup.
+
+## Explore the Dashboard
+
+After logging in, you'll see your dashboard. This is your home base where you can access all features and see important information at a glance.
+
+## Customize Your Settings
+
+Visit the Settings page to personalize your experience. You can adjust:
+
+- **Theme**: Choose between light, dark, or system mode
+- **Language**: Select your preferred language
+- **Notifications**: Configure how you want to be notified
+
+## Get Help Anytime
+
+If you need assistance, click the help icon or visit the Help section. You can also reach out to our support team if you have questions.