refactor(db): consolidate ~20+ databases into 2 (mana_platform + mana_sync)

Mirrors the frontend unification (single IndexedDB) on the backend.
All services now use pgSchema() for isolation within one shared database,
enabling cross-schema JOINs, simplified ops, and zero DB setup for new apps.

- Migrate 7 services from pgTable() to pgSchema(): mana-user (usr),
  mana-media (media), todo, traces, presi, uload, cards
- Update all DATABASE_URLs in .env.development, docker-compose, configs
- Rewrite init-db scripts for 2 databases + 12 schemas
- Rewrite setup-databases.sh for consolidated architecture
- Update shared-drizzle-config default to mana_platform
- Update CLAUDE.md with new database architecture docs

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

packages/cards-database/src/schema/aiGenerations.ts

@@ -1,6 +1,7 @@
-import { pgTable, uuid, text, varchar, timestamp, jsonb, index, pgEnum } from 'drizzle-orm/pg-core';
+import { uuid, text, varchar, timestamp, jsonb, index, pgEnum } from 'drizzle-orm/pg-core';
 import { relations } from 'drizzle-orm';
-import { decks } from './decks.js';
+import { cardsSchema } from './schema';
+import { decks } from './decks';
 
 // AI generation status enum
 export const aiGenerationStatusEnum = pgEnum('ai_generation_status', [
@@ -21,7 +22,7 @@ export interface AIGenerationMetadata {
 	[key: string]: unknown;
 }
 
-export const aiGenerations = pgTable(
+export const aiGenerations = cardsSchema.table(
 	'ai_generations',
 	{
 		id: uuid('id').primaryKey().defaultRandom(),

packages/cards-database/src/schema/cardProgress.ts

@@ -1,5 +1,4 @@
 import {
-	pgTable,
 	uuid,
 	text,
 	integer,
@@ -10,7 +9,8 @@ import {
 	unique,
 } from 'drizzle-orm/pg-core';
 import { relations } from 'drizzle-orm';
-import { cards } from './cards.js';
+import { cardsSchema } from './schema';
+import { cards } from './cards';
 
 // Progress status enum (SM-2 algorithm states)
 export const progressStatusEnum = pgEnum('progress_status', [
@@ -20,7 +20,7 @@ export const progressStatusEnum = pgEnum('progress_status', [
 	'relearning',
 ]);
 
-export const cardProgress = pgTable(
+export const cardProgress = cardsSchema.table(
 	'card_progress',
 	{
 		id: uuid('id').primaryKey().defaultRandom(),

packages/cards-database/src/schema/cards.ts

@@ -1,5 +1,4 @@
 import {
-	pgTable,
 	uuid,
 	varchar,
 	text,
@@ -11,8 +10,9 @@ import {
 	pgEnum,
 } from 'drizzle-orm/pg-core';
 import { relations } from 'drizzle-orm';
-import { decks } from './decks.js';
-import { cardProgress } from './cardProgress.js';
+import { cardsSchema } from './schema';
+import { decks } from './decks';
+import { cardProgress } from './cardProgress';
 
 // Card type enum
 export const cardTypeEnum = pgEnum('card_type', ['text', 'flashcard', 'quiz', 'mixed']);
@@ -46,7 +46,7 @@ export interface MixedContent {
 
 export type CardContent = TextContent | FlashcardContent | QuizContent | MixedContent;
 
-export const cards = pgTable(
+export const cards = cardsSchema.table(
 	'cards',
 	{
 		id: uuid('id').primaryKey().defaultRandom(),

packages/cards-database/src/schema/dailyProgress.ts

@@ -1,16 +1,7 @@
-import {
-	pgTable,
-	uuid,
-	text,
-	date,
-	integer,
-	decimal,
-	timestamp,
-	index,
-	unique,
-} from 'drizzle-orm/pg-core';
+import { uuid, text, date, integer, decimal, timestamp, index, unique } from 'drizzle-orm/pg-core';
+import { cardsSchema } from './schema';
 
-export const dailyProgress = pgTable(
+export const dailyProgress = cardsSchema.table(
 	'daily_progress',
 	{
 		id: uuid('id').primaryKey().defaultRandom(),

packages/cards-database/src/schema/deckTemplates.ts

@@ -1,5 +1,4 @@
 import {
-	pgTable,
 	uuid,
 	varchar,
 	text,
@@ -9,6 +8,7 @@ import {
 	jsonb,
 	index,
 } from 'drizzle-orm/pg-core';
+import { cardsSchema } from './schema';
 
 // Template data structure
 export interface DeckTemplateData {
@@ -21,7 +21,7 @@ export interface DeckTemplateData {
 	tags?: string[];
 }
 
-export const deckTemplates = pgTable(
+export const deckTemplates = cardsSchema.table(
 	'deck_templates',
 	{
 		id: uuid('id').primaryKey().defaultRandom(),

packages/cards-database/src/schema/decks.ts

@@ -1,19 +1,11 @@
-import {
-	pgTable,
-	uuid,
-	text,
-	varchar,
-	boolean,
-	timestamp,
-	jsonb,
-	index,
-} from 'drizzle-orm/pg-core';
+import { uuid, text, varchar, boolean, timestamp, jsonb, index } from 'drizzle-orm/pg-core';
 import { relations } from 'drizzle-orm';
-import { cards } from './cards.js';
-import { studySessions } from './studySessions.js';
-import { aiGenerations } from './aiGenerations.js';
+import { cardsSchema } from './schema';
+import { cards } from './cards';
+import { studySessions } from './studySessions';
+import { aiGenerations } from './aiGenerations';
 
-export const decks = pgTable(
+export const decks = cardsSchema.table(
 	'decks',
 	{
 		id: uuid('id').primaryKey().defaultRandom(),

packages/cards-database/src/schema/index.ts

@@ -1,16 +1,19 @@
+// Export schema definition
+export * from './schema';
+
 // Export all schemas
-export * from './decks.js';
-export * from './cards.js';
-export * from './studySessions.js';
-export * from './cardProgress.js';
-export * from './deckTemplates.js';
-export * from './aiGenerations.js';
-export * from './userStats.js';
-export * from './dailyProgress.js';
+export * from './decks';
+export * from './cards';
+export * from './studySessions';
+export * from './cardProgress';
+export * from './deckTemplates';
+export * from './aiGenerations';
+export * from './userStats';
+export * from './dailyProgress';
 
 // Re-export relations for use with Drizzle query builder
-export { decksRelations } from './decks.js';
-export { cardsRelations } from './cards.js';
-export { studySessionsRelations } from './studySessions.js';
-export { cardProgressRelations } from './cardProgress.js';
-export { aiGenerationsRelations } from './aiGenerations.js';
+export { decksRelations } from './decks';
+export { cardsRelations } from './cards';
+export { studySessionsRelations } from './studySessions';
+export { cardProgressRelations } from './cardProgress';
+export { aiGenerationsRelations } from './aiGenerations';

packages/cards-database/src/schema/schema.ts

@@ -0,0 +1,3 @@
+import { pgSchema } from 'drizzle-orm/pg-core';
+
+export const cardsSchema = pgSchema('cards');

packages/cards-database/src/schema/studySessions.ts

@@ -1,11 +1,12 @@
-import { pgTable, uuid, text, integer, timestamp, index, pgEnum } from 'drizzle-orm/pg-core';
+import { uuid, text, integer, timestamp, index, pgEnum } from 'drizzle-orm/pg-core';
 import { relations } from 'drizzle-orm';
-import { decks } from './decks.js';
+import { cardsSchema } from './schema';
+import { decks } from './decks';
 
 // Study mode enum
 export const studyModeEnum = pgEnum('study_mode', ['all', 'new', 'review', 'favorites', 'random']);
 
-export const studySessions = pgTable(
+export const studySessions = cardsSchema.table(
 	'study_sessions',
 	{
 		id: uuid('id').primaryKey().defaultRandom(),

packages/cards-database/src/schema/userStats.ts

@@ -1,6 +1,7 @@
-import { pgTable, text, integer, decimal, date, timestamp, index } from 'drizzle-orm/pg-core';
+import { text, integer, decimal, date, timestamp, index } from 'drizzle-orm/pg-core';
+import { cardsSchema } from './schema';
 
-export const userStats = pgTable(
+export const userStats = cardsSchema.table(
 	'user_stats',
 	{
 		userId: text('user_id').primaryKey(),