refactor: rename ManaDeck to Cards across entire monorepo

Rename the flashcard/deck management app from ManaDeck to Cards:
- Directory: apps/manadeck → apps/cards, packages/manadeck-database → packages/cards-database
- Packages: @manadeck/* → @cards/*, @manacore/manadeck-database → @manacore/cards-database
- Domain: manadeck.mana.how → cards.mana.how
- Storage: manadeck-storage → cards-storage
- Database: manadeck → cards
- All shared packages, infra configs, services, i18n, and docs updated
- 244 files changed, zero remaining manadeck references

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

packages/shared-storage/src/factory.ts

@@ -103,7 +103,7 @@ export function createStorage(bucketKey: keyof typeof BUCKETS, publicUrl?: strin
 export const createManaCoreStorage = (publicUrl?: string) => createStorage('MANACORE', publicUrl);
 export const createPictureStorage = (publicUrl?: string) => createStorage('PICTURE', publicUrl);
 export const createChatStorage = () => createStorage('CHAT');
-export const createManaDeckStorage = () => createStorage('MANADECK');
+export const createCardsStorage = () => createStorage('CARDS');
 export const createPresiStorage = () => createStorage('PRESI');
 export const createCalendarStorage = () => createStorage('CALENDAR');
 export const createContactsStorage = () => createStorage('CONTACTS');

packages/shared-storage/src/index.ts

@@ -9,7 +9,7 @@ export {
 	createManaCoreStorage,
 	createPictureStorage,
 	createChatStorage,
-	createManaDeckStorage,
+	createCardsStorage,
 	createPresiStorage,
 	createCalendarStorage,
 	createContactsStorage,

packages/shared-storage/src/types.ts

@@ -129,7 +129,7 @@ export const BUCKETS = {
 	MANACORE: 'manacore-storage',
 	PICTURE: 'picture-storage',
 	CHAT: 'chat-storage',
-	MANADECK: 'manadeck-storage',
+	CARDS: 'cards-storage',
 	PRESI: 'presi-storage',
 	CALENDAR: 'calendar-storage',
 	CONTACTS: 'contacts-storage',