db: Drizzle schemas on domain Postgres schemas, baseline migration, reorg SQL

- pgSchema tables for auth, money, house, ref, games, cs, animaldex, site, meta
  (lists excluded via schemaFilter; runtime list tables are managed by meta.*)
- drizzle/ baseline matches the reorged DB exactly (catalog diff = 0 on rehearsal)
- db/reorg: one-time SQL that moves the flat public schema (rehearsed on a prod copy)
- scripts/db-migrate.ts: migrator with --init to record the baseline and a guard
  against running the baseline on a non-empty, unrecorded database

src/lib/server/db/schema/progress.ts

@@ -1,7 +1,8 @@
-import { integer, pgTable, text, unique } from 'drizzle-orm/pg-core';
+import { integer, text, unique } from 'drizzle-orm/pg-core';
+import { siteSchema } from './schemas';
 import { id, timestamps } from './helpers';
 
-export const tasks = pgTable('tasks', {
+export const tasks = siteSchema.table('tasks', {
 	id: id(),
 	name: text('name').notNull(),
 	currentPoints: integer('current_points').notNull().default(0),
@@ -10,15 +11,15 @@ export const tasks = pgTable('tasks', {
 	...timestamps
 });
 
-export const topics = pgTable('topics', {
+export const topics = siteSchema.table('topics', {
 	id: id(),
 	name: text('name').notNull(),
 	emoji: text('emoji'),
 	...timestamps
 });
 
-export const tasksToTopics = pgTable(
-	'tasks_to_topics',
+export const tasksToTopics = siteSchema.table(
+	'task_topics',
 	{
 		id: id(),
 		taskId: integer('task_id')