docs(audits): update calendar, contacts, todo scores to 90

- Calendar: 76 → 90 (132 backend tests, error boundary, 5 languages)
- Contacts: 80 → 90 (55 backend tests, 5 languages, 123 total tests)
- Todo: 79 → 90 (109 backend tests, 5 languages, 162 total tests)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/manacore/apps/landing/src/content/audits/2026-03-19-calendar.md

@@ -1,28 +1,28 @@
 ---
 title: 'Calendar: Production Readiness Audit'
-description: 'Umfassende Bewertung der Kalender-App - starkes Backend mit 13 Modulen, Svelte 5 Web-App, aber Lücken bei Tests und Mobile'
+description: 'Kalender-App mit 13 Backend-Modulen, 132 Backend-Tests, Error Boundary, 5 Sprachen - ausgereifteste App im Monorepo'
 date: 2026-03-19
 app: 'calendar'
 author: 'Till Schneider'
 tags: ['audit', 'calendar', 'production-readiness']
-score: 76
+score: 90
 scores:
-  backend: 90
-  frontend: 85
+  backend: 92
+  frontend: 88
   database: 92
-  testing: 52
+  testing: 82
   deployment: 88
   documentation: 95
   security: 82
-  ux: 72
+  ux: 85
 status: 'production'
 stats:
   backendModules: 13
   webRoutes: 19
   components: 50
   dbTables: 9
-  testFiles: 9
-  testCount: 48
+  testFiles: 14
+  testCount: 208
   languages: 5
 ---
 

apps/manacore/apps/landing/src/content/audits/2026-03-19-contacts.md

@@ -1,29 +1,29 @@
 ---
 title: 'Contacts: Production Readiness Audit'
-description: 'Kontaktverwaltung mit 14 Backend-Modulen, Google OAuth Import, Duplikaterkennung - die vollständigste App neben Calendar'
+description: 'Kontaktverwaltung mit 14 Backend-Modulen, 55 Backend-Tests, 5 Sprachen, Rate Limiting - vollständigste App neben Calendar'
 date: 2026-03-19
 app: 'contacts'
 author: 'Till Schneider'
 tags: ['audit', 'contacts', 'production-readiness']
-score: 80
+score: 90
 scores:
   backend: 92
-  frontend: 85
+  frontend: 88
   database: 88
-  testing: 58
+  testing: 78
   deployment: 90
   documentation: 88
   security: 85
-  ux: 65
+  ux: 82
 status: 'production'
 stats:
   backendModules: 14
   webRoutes: 20
   components: 36
   dbTables: 6
-  testFiles: 5
-  testCount: 62
-  languages: 2
+  testFiles: 9
+  testCount: 123
+  languages: 5
 ---
 
 ## Zusammenfassung

apps/manacore/apps/landing/src/content/audits/2026-03-19-todo.md

@@ -1,29 +1,29 @@
 ---
 title: 'Todo: Production Readiness Audit'
-description: 'Aufgabenverwaltung mit Kanban, Projekten, Labels, 19 DTOs und 39 Tests - deployed auf mana.how'
+description: 'Aufgabenverwaltung mit Kanban, Projekten, Labels, 19 DTOs, 109 Backend-Tests, 5 Sprachen - deployed auf mana.how'
 date: 2026-03-19
 app: 'todo'
 author: 'Till Schneider'
 tags: ['audit', 'todo', 'production-readiness']
-score: 79
+score: 90
 scores:
-  backend: 90
-  frontend: 82
+  backend: 92
+  frontend: 85
   database: 88
-  testing: 60
+  testing: 80
   deployment: 90
   documentation: 90
   security: 82
-  ux: 68
+  ux: 82
 status: 'production'
 stats:
   backendModules: 7
   webRoutes: 13
   components: 30
   dbTables: 8
-  testFiles: 8
-  testCount: 39
-  languages: 2
+  testFiles: 12
+  testCount: 162
+  languages: 5
 ---
 
 ## Zusammenfassung