chore: Rebrand auf ev.mana.cardecky

Apple-Developer-Portal-App-ID lautet ev.mana.cardecky (analog zur
Domain cardecky.mana.how). Alle Bundle-IDs, App-Group, Keychain-
Group, OSLog-Subsysteme, URL-Schemes, Widget-Kind, App-Intent-Phrases,
Marketing-Texte und Doku nachgezogen.

Bundle-IDs neu:
- Main: ev.mana.cardecky
- Widget: ev.mana.cardecky.widget
- Share: ev.mana.cardecky.share
- Tests: ev.mana.cardecky.tests / .uitests

App-Group: group.ev.mana.cardecky
Keychain-Access-Group: $(AppIdentifierPrefix)ev.mana.cardecky
OSLog-Subsystem: ev.mana.cardecky

AASA gleichzeitig in cards-Repo angepasst (Commit 21ec535) und
auf mana-server redeployed — Probe liefert appID
"QP3GLU8PH3.ev.mana.cardecky".

Plus: ShareExtension/Resources/Info.plist + entitlements werden
jetzt analog zu Widget-Resources gitignored (sind XcodeGen-generated).

35 Unit-Tests + 1 UI-Test grün, alle drei Targets bauen.

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

Sources/Core/Sync/PendingShareStore.swift

@@ -18,7 +18,7 @@ struct PendingShare: Codable, Identifiable, Hashable, Sendable {
 }
 
 enum PendingShareStore {
-    static let appGroupID = "group.ev.mana.cards"
+    static let appGroupID = "group.ev.mana.cardecky"
     static let filename = "pending-shares.json"
 
     static var url: URL? {

Sources/Core/Sync/WidgetSnapshot.swift

@@ -22,7 +22,7 @@ struct WidgetSnapshot: Codable, Sendable {
 /// Liest und schreibt WidgetSnapshot in den shared App-Group-Container.
 enum WidgetSnapshotStore {
     /// App-Group-ID — muss exakt mit dem Entitlement-Eintrag matchen.
-    static let appGroupID = "group.ev.mana.cards"
+    static let appGroupID = "group.ev.mana.cardecky"
     static let snapshotFilename = "widget-snapshot.json"
 
     static var snapshotURL: URL? {