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>

Tests/UnitTests/CardsNativeTests.swift

@@ -13,8 +13,8 @@ struct AppConfigTests {
         #expect(AppConfig.manaAppConfig.authBaseURL.absoluteString == "https://auth.mana.how")
     }
 
-    @Test("Keychain-Service ist ev.mana.cards")
+    @Test("Keychain-Service ist ev.mana.cardecky")
     func keychainServiceIsAppSpecific() {
-        #expect(AppConfig.manaAppConfig.keychainService == "ev.mana.cards")
+        #expect(AppConfig.manaAppConfig.keychainService == "ev.mana.cardecky")
     }
 }