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+# Dependency Alignment Guide
+
+This document tracks critical dependencies across all projects and their target versions for alignment.
+
+## Critical Dependencies
+
+### High Priority - Version Mismatches
+
+| Package | Target Version | Current Versions | Notes |
+|---------|---------------|------------------|-------|
+| `@supabase/supabase-js` | **2.81.1** | 2.38.4 - 2.81.1 | Significant spread, alignment critical |
+| `typescript` | **5.9.2** | 5.3.3 - 5.9.2 | Update all to latest |
+| `react` | **19.1.0** | 18.3.1 - 19.1.0 | Mixed versions |
+| `expo` | **54.x** | 52.0.39 - 54.0.21 | Manacore needs update |
+| `expo-router` | **6.x** | 4.0.19 - 6.0.14 | Manacore needs update |
+| `astro` | **5.16.0** | 5.3.0 - 5.16.0 | Memoro landing needs update |
+
+### Current Status by Project
+
+#### Supabase Versions
+```
+maerchenzauber:
+  - backend: 2.50.3
+  - mobile: 2.50.3
+
+manacore:
+  - mobile: 2.38.4 ❌ (very outdated)
+  - web: 2.49.2
+
+manadeck:
+  - backend: 2.58.0
+  - mobile: 2.38.4 ❌ (very outdated)
+  - web: 2.81.1 ✅
+
+memoro:
+  - mobile: 2.49.4
+  - web: 2.76.1
+```
+
+#### Expo/React Native Versions
+```
+maerchenzauber:
+  - expo: 54.0.21 ✅
+  - react-native: 0.81.5 ✅
+  - expo-router: 6.0.14 ✅
+
+manacore:
+  - expo: 52.0.39 ❌ (SDK 52, needs update to 54)
+  - react-native: 0.76.7 ❌
+  - expo-router: 4.0.19 ❌
+
+manadeck:
+  - expo: 54.0.13 ✅
+  - react-native: 0.81.4 ✅
+  - expo-router: 6.0.10 ✅
+
+memoro:
+  - expo: 54.0.0 ✅
+  - react-native: 0.81.4 ✅
+  - expo-router: 6.0.8 ✅
+```
+
+#### NestJS Versions (Backends)
+```
+maerchenzauber: NestJS 10.0.0
+manadeck: NestJS 11.0.1
+
+Target: Align to NestJS 11.x
+```
+
+## Migration Priority
+
+### Phase 1: Critical Alignments (Week 1)
+
+1. **Manacore Expo Update** (High Risk)
+   - Upgrade from Expo SDK 52 → 54
+   - Update expo-router 4.x → 6.x
+   - Update react-native 0.76.7 → 0.81.x
+   - This is the most significant update needed
+
+2. **Supabase Alignment**
+   - Update all projects to 2.81.1
+   - Test auth flows after update
+   - Check for breaking changes in RLS
+
+3. **TypeScript Alignment**
+   - Update all to 5.9.2
+   - Run type-check across all projects
+
+### Phase 2: Secondary Alignments (Week 2)
+
+1. **Astro Updates**
+   - Update Memoro landing from 5.3.0 → 5.16.0
+
+2. **SvelteKit/Vite Updates**
+   - Align Vite versions (6.0.7 → 7.1.10)
+   - Align SvelteKit versions
+
+3. **NestJS Alignment**
+   - Update Maerchenzauber backend 10.x → 11.x
+   - Test all API endpoints
+
+## Alignment Commands
+
+### Update Supabase across all projects:
+
+```bash
+# Maerchenzauber
+cd maerchenzauber/apps/backend && pnpm update @supabase/supabase-js@2.81.1
+cd maerchenzauber/apps/mobile && pnpm update @supabase/supabase-js@2.81.1
+
+# Manacore
+cd manacore/apps/mobile && pnpm update @supabase/supabase-js@2.81.1
+cd manacore/apps/web && pnpm update @supabase/supabase-js@2.81.1
+
+# Manadeck
+cd manadeck/backend && pnpm update @supabase/supabase-js@2.81.1
+cd manadeck/apps/mobile && pnpm update @supabase/supabase-js@2.81.1
+
+# Memoro
+cd memoro/apps/mobile && pnpm update @supabase/supabase-js@2.81.1
+cd memoro/apps/web && pnpm update @supabase/supabase-js@2.81.1
+```
+
+### Update TypeScript across all projects:
+
+```bash
+pnpm update typescript@5.9.2 --recursive
+```
+
+## Testing After Alignment
+
+After updating dependencies, verify:
+
+1. **Build succeeds**: `pnpm run build`
+2. **Type checks pass**: `pnpm run type-check`
+3. **Tests pass**: `pnpm run test`
+4. **Auth flows work** (especially after Supabase updates)
+5. **Mobile apps launch** (especially after Expo updates)
+
+## Breaking Changes to Watch
+
+### Supabase 2.38 → 2.81
+- Auth session handling may have changed
+- Check `onAuthStateChange` listeners
+- Verify RLS policies still work
+
+### Expo SDK 52 → 54
+- Check expo-router migration guide
+- New navigation patterns in 6.x
+- Screen options changes
+- Layout changes
+
+### NestJS 10 → 11
+- Decorator changes
+- Module resolution changes
+- Check middleware compatibility
+
+## Recommended Tools
+
+- **Renovate/Dependabot**: Auto-update dependencies
+- **pnpm outdated**: Check for outdated packages
+- **turbo prune**: Create minimal installs for specific projects
+
+## Tracking Updates
+
+Mark completed updates:
+
+- [ ] Supabase alignment (all projects)
+- [ ] TypeScript alignment (all projects)
+- [ ] Manacore Expo SDK update
+- [ ] Astro alignment
+- [ ] NestJS alignment
+- [ ] SvelteKit/Vite alignment