fix: User-facing Strings Cards → Cardecky komplett, Build 3

User-facing Rebrand:
- LoginView Heading (war schon in v0.8.5)
- NotificationManager.title (war schon in v0.8.5)
- ShareEditorView Footer-Text: "...in der Cards-App" → "...in der Cardecky-App"
- StudyAppIntents Description: "Öffnet Cards" → "Öffnet Cardecky"
- Localizable.xcstrings: "Cards" key → "Cardecky"
- NSPhotoLibraryUsageDescription: "Cards greift..." → "Cardecky greift..."
- Log.app.info("Cards starting") → "Cardecky starting"
- MARKETING_COPY.md: alle "Cards"-Treffer in DE + EN auf Cardecky
- RELEASE_CHECKLIST: App-Name "Cards" → "Cardecky"

Build-Nummer 2 → 3 (Apple lehnt doppelte Build-Nummern ab, Code-
Hash hat sich geändert).

Code-Identifier bleiben: CardsAPI, CardsTheme, CardsNativeApp,
CardsWidgetExtension, CardsShareExtension — interne Symbol-Namen,
nicht user-facing.

Archive verifiziert: CFBundleDisplayName=Cardecky, Build=3.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

project.yml

@@ -55,7 +55,7 @@ targets:
       path: Sources/Resources/Info.plist
       properties:
         CFBundleShortVersionString: "0.1.0"
-        CFBundleVersion: "2"
+        CFBundleVersion: "3"
         CFBundleDevelopmentRegion: de
         CFBundleDisplayName: Cardecky
         LSApplicationCategoryType: "public.app-category.education"
@@ -75,7 +75,7 @@ targets:
               - cards
         NSUserActivityTypes:
           - NSUserActivityTypeBrowsingWeb
-        NSPhotoLibraryUsageDescription: "Cards greift auf deine Fotos zu, damit du Bilder zu Image-Occlusion-Karten hinzufügen kannst."
+        NSPhotoLibraryUsageDescription: "Cardecky greift auf deine Fotos zu, damit du Bilder zu Image-Occlusion-Karten hinzufügen kannst."
         ITSAppUsesNonExemptEncryption: false
     entitlements:
       path: Sources/Resources/CardsNative.entitlements
@@ -111,7 +111,7 @@ targets:
       properties:
         CFBundleDisplayName: Als Karte speichern
         CFBundleShortVersionString: "0.1.0"
-        CFBundleVersion: "2"
+        CFBundleVersion: "3"
         NSExtension:
           NSExtensionPointIdentifier: com.apple.share-services
           NSExtensionPrincipalClass: $(PRODUCT_MODULE_NAME).ShareViewController
@@ -144,7 +144,7 @@ targets:
       properties:
         CFBundleDisplayName: Cardecky Widget
         CFBundleShortVersionString: "0.1.0"
-        CFBundleVersion: "2"
+        CFBundleVersion: "3"
         NSExtension:
           NSExtensionPointIdentifier: com.apple.widgetkit-extension
     entitlements: