feat(db): add rent_payment_destinations column and multi-schema support

- Add migration 0020 for rent_payment_destinations jsonb column
- Add DB_SCHEMA env var support for multi-schema deployments
- Create custom migrate.ts script with proper search_path handling
- Update drizzle.config.ts and client.ts to use DB_SCHEMA
- Add db_schema variable to Terraform with dev=test/prod=public defaults
- Update CD workflow to set DB_SCHEMA based on branch

packages/db/src/migrate.ts

@@ -0,0 +1,35 @@
+import postgres from 'postgres'
+import { drizzle } from 'drizzle-orm/postgres-js'
+import { migrate } from 'drizzle-orm/postgres-js/migrator'
+import path from 'path'
+
+const databaseUrl = process.env.DATABASE_URL
+if (!databaseUrl) {
+  throw new Error('DATABASE_URL is not set')
+}
+
+const dbSchema = process.env.DB_SCHEMA || 'public'
+
+console.log(`Running migrations for schema: ${dbSchema}...`)
+
+const migrationClient = postgres(databaseUrl, {
+  max: 1,
+  onnotice: () => {}
+})
+
+// Explicitly set search_path to the target schema
+// This ensures that 'CREATE TABLE "x"' goes into the right schema
+await migrationClient.unsafe(`SET search_path TO ${dbSchema}`)
+
+const db = drizzle(migrationClient)
+
+// This runs migrations from the 'drizzle' folder
+await migrate(db, {
+  migrationsFolder: path.resolve(__dirname, '../drizzle'),
+  migrationsSchema: dbSchema,
+  migrationsTable: '__drizzle_migrations'
+})
+
+console.log('Migrations applied successfully!')
+await migrationClient.end()
+process.exit(0)