feat: unify UI components, AppSlider, and login screens across apps

SUMMARY:
Consolidate shared UI components into @manacore/shared-ui and add
AppSlider to all login screens for a consistent Mana ecosystem experience.

CHANGES:

1. UI Components Migration:
   - Added Card.svelte to @manacore/shared-ui with variants (elevated, outlined, ghost)
   - Migrated Manacore (7 files) and Manadeck (7 files) to use shared-ui
   - Removed local ui/ directories from both apps (8 components total)

2. AppSlider Unification:
   - Created shared AppSlider in @manacore/shared-ui with configurable props
   - Props: apps[], title, isDark, statusLabels, comingSoonLabel, openAppLabel, onAppClick
   - Supports both i18n and static text configurations
   - Updated Memoro AppSlider to use shared component with svelte-i18n
   - Updated Manacore AppSlider to use shared component
   - Created new AppSlider for ManaDeck and Märchenzauber

3. Login Page Enhancements:
   - Extended LoginPage in @manacore/shared-auth-ui with new snippets:
     - appSlider: Renders AppSlider at bottom (initial mode only)
     - headerControls: Renders controls (theme toggle, etc.) top-right
   - Updated all app login pages to include AppSlider:
     - ManaCore: indigo theme (#6366f1)
     - ManaDeck: violet theme (#8b5cf6)
     - Märchenzauber: pink theme (#FF6B9D)

4. Subscription Page Consolidation:
   - Created SubscriptionPage component in @manacore/shared-subscription-ui
   - Moved subscription data (plans, packages, costs) to shared package
   - Reduced subscription page code from ~100 to ~18 lines per app

FILES CHANGED:
- packages/shared-ui: Added Card, AppSlider, updated exports
- packages/shared-auth-ui: Extended LoginPage with snippets
- packages/shared-subscription-ui: Added SubscriptionPage, data files
- manacore/web: Migrated 7 files to shared-ui, updated login
- manadeck/web: Migrated 7 files to shared-ui, added AppSlider, updated login
- maerchenzauber/web: Added AppSlider, updated login
- memoro/web: Updated AppSlider to use shared component

DELETED (moved to shared packages):
- manacore/web/src/lib/components/ui/* (3 files)
- manadeck/web/src/lib/components/ui/* (5 files)
- memoro/web/src/lib/data/*.json (3 files)
- Various pnpm-lock.yaml and pnpm-workspace.yaml files

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

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

docs/DEVELOPMENT_SCRIPTS.md

@@ -0,0 +1,109 @@
+# Development Scripts
+
+Diese Dokumentation beschreibt die verfügbaren Entwicklungsbefehle im Manacore Monorepo.
+
+## Übersicht
+
+Das Monorepo nutzt [Turborepo](https://turbo.build/) für parallele Builds und intelligentes Caching. Alle Befehle werden über `pnpm` ausgeführt.
+
+## Globale Befehle
+
+| Befehl | Beschreibung |
+|--------|--------------|
+| `pnpm dev` | Startet alle Apps (Web, Mobile, Landing, Backend) |
+| `pnpm build` | Baut alle Packages und Apps |
+| `pnpm test` | Führt alle Tests aus |
+| `pnpm lint` | Führt Linting für alle Packages aus |
+| `pnpm type-check` | TypeScript-Typprüfung für alle Packages |
+| `pnpm clean` | Bereinigt Build-Artefakte |
+| `pnpm format` | Formatiert alle Dateien mit Prettier |
+| `pnpm format:check` | Prüft Formatierung ohne Änderungen |
+
+## App-Typ Befehle
+
+Diese Befehle starten alle Apps eines bestimmten Typs gleichzeitig:
+
+| Befehl | Beschreibung | Apps |
+|--------|--------------|------|
+| `pnpm dev:web` | Startet alle Web-Apps | maerchenzauber, manacore, manadeck, memoro |
+| `pnpm dev:landing` | Startet alle Landing Pages | maerchenzauber, manacore, manadeck, memoro |
+| `pnpm dev:mobile` | Startet alle Mobile-Apps | maerchenzauber, manacore, manadeck, memoro |
+
+### Beispiel
+
+```bash
+# Alle Web-Apps starten (SvelteKit)
+pnpm dev:web
+
+# Alle Landing Pages starten (Astro)
+pnpm dev:landing
+
+# Alle Mobile-Apps starten (Expo)
+pnpm dev:mobile
+```
+
+## Projekt-spezifische Befehle
+
+Diese Befehle starten ein komplettes Projekt mit allen zugehörigen Apps und Dependencies:
+
+| Befehl | Beschreibung |
+|--------|--------------|
+| `pnpm maerchenzauber:dev` | Startet Maerchenzauber (Backend, Web, Mobile, Landing) |
+| `pnpm manacore:dev` | Startet Manacore (Web, Mobile, Landing) |
+| `pnpm manadeck:dev` | Startet Manadeck (Web, Mobile, Landing) |
+| `pnpm memoro:dev` | Startet Memoro (Web, Mobile, Landing) |
+
+## Turbo Filter
+
+Für erweiterte Kontrolle kannst du Turbo-Filter direkt verwenden:
+
+```bash
+# Einzelne App starten
+pnpm turbo run dev --filter=@storyteller/web
+
+# Mehrere Apps kombinieren
+pnpm turbo run dev --filter=manacore-web --filter=memoro-web
+```
+
+### Package-Namen Referenz
+
+Da die Package-Namen im Monorepo unterschiedlich sind, hier eine Übersicht:
+
+| Projekt | Web | Landing | Mobile | Backend |
+|---------|-----|---------|--------|---------|
+| maerchenzauber | `@storyteller/web` | `@storyteller/landing` | `@storyteller/mobile` | `@storyteller/backend` |
+| manacore | `manacore-web` | `manacore-landing` | `manacore` | - |
+| manadeck | `web` | `landing` | `manadeck` | - |
+| memoro | `memoro-web` | `memoro-landing` | `memoro` | - |
+
+### Filter-Syntax
+
+| Pattern | Beschreibung |
+|---------|--------------|
+| `--filter=name` | Exakte Package-Übereinstimmung |
+| `--filter=name...` | Package und alle Dependencies |
+| `--filter='@scope/*'` | Alle Packages im Scope |
+
+## Port-Zuweisungen
+
+Wenn mehrere Apps gleichzeitig laufen, verwenden sie unterschiedliche Ports:
+
+| App-Typ | Projekt | Standard-Port |
+|---------|---------|---------------|
+| Web | maerchenzauber | 5173 |
+| Web | manacore | 5174 |
+| Web | manadeck | 5175 |
+| Web | memoro | 5176 |
+| Landing | maerchenzauber | 4321 |
+| Landing | manacore | 4322 |
+| Landing | manadeck | 4323 |
+| Landing | memoro | 4324 |
+| Backend | maerchenzauber | 3000 |
+
+*Hinweis: Die tatsächlichen Ports können je nach Konfiguration variieren.*
+
+## Tipps
+
+1. **Schnelleres Starten**: Nutze `dev:web` statt `dev` wenn du nur an Web-Apps arbeitest
+2. **Parallele Entwicklung**: Turbo führt alle Tasks parallel aus und nutzt Caching
+3. **Selektives Bauen**: Nutze Filter um nur relevante Packages zu bauen