refactor(big-bang): cards → wordeck im gesamten Code-Layer

Phase 2 des cards→wordeck Big-Bang-Rebrand:

- 4 package.json: @cards/* → @wordeck/*
- packages/cards-domain/ → packages/wordeck-domain/
- 41+12 Files: from '@cards/domain' → '@wordeck/domain'
- pgSchema('cards') → pgSchema('wordeck') (Drizzle-Schema)
- 17 Files: process.env.CARDS_* → process.env.WORDECK_*
- docker-compose Service-Names: cards-* → wordeck-*
- docker-compose Volume: /Volumes/ManaData/cards → wordeck
- env-vars in compose: CARDS_DB_PASSWORD/_API_VERSION/_DSGVO_SERVICE_KEY etc. → WORDECK_*
- Log-Prefixes + Error-Strings + manifest-id 'cards' → 'wordeck'
- CORS-Origin cardecky.mana.how → wordeck.com
- .env.production.example umbenannt + S3-Key entfernt (kein MinIO mehr)

Type-Check 0 Errors in api+domain+web, 51/51 Domain-Tests grün.

DB-Rename + Container/Volume-Rename auf mana-server folgen in nächstem
Commit nach Verzeichnis-Rename.

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

apps/api/src/lib/marketplace/version-hash.ts

@@ -1,6 +1,6 @@
 /**
  * Per-Version-Content-Hash. Pro Karte wird `cardContentHash` aus
- * `@cards/domain` benutzt (gemeinsame Source-of-Truth zwischen privatem
+ * `@wordeck/domain` benutzt (gemeinsame Source-of-Truth zwischen privatem
  * Lern-Stack und Marketplace) — pro Version hashen wir die geordnete
  * Liste von Karten-Hashes plus deren Ordinal-Position.
  *
@@ -17,7 +17,7 @@
  * privaten `cards.cards.content_hash` matchen können soll.
  */
 
-import { cardContentHash } from '@cards/domain';
+import { cardContentHash } from '@wordeck/domain';
 
 export interface OrderedCardForHash {
 	type: string;

apps/api/src/lib/reviews.ts

@@ -1,4 +1,4 @@
-import { newReview } from '@cards/domain';
+import { newReview } from '@wordeck/domain';
 
 export function makeInitialReviewRows(params: {
 	userId: string;

apps/api/src/lib/search.ts

@@ -3,7 +3,7 @@ import { and, eq, sql } from 'drizzle-orm';
 import type { CardsDb } from '../db/connection.ts';
 import { cards, decks } from '../db/schema/index.ts';
 
-const APP_BASE_URL = process.env.CARDS_PUBLIC_URL ?? 'https://cardecky.mana.how';
+const APP_BASE_URL = process.env.WORDECK_PUBLIC_URL ?? 'https://cardecky.mana.how';
 
 export type SearchHit = {
 	id: string;