add migration

ts/database/migrations/migration-009-backup-system.ts

@@ -0,0 +1,29 @@
+import { BaseMigration } from './base-migration.ts';
+import type { TQueryFunction } from '../types.ts';
+
+export class Migration009BackupSystem extends BaseMigration {
+  readonly version = 9;
+  readonly description = 'Backup system tables';
+
+  up(query: TQueryFunction): void {
+    query(`ALTER TABLE services ADD COLUMN include_image_in_backup INTEGER DEFAULT 1`);
+
+    query(`
+      CREATE TABLE backups (
+        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        service_id INTEGER NOT NULL,
+        service_name TEXT NOT NULL,
+        filename TEXT NOT NULL,
+        size_bytes INTEGER NOT NULL,
+        created_at REAL NOT NULL,
+        includes_image INTEGER NOT NULL,
+        platform_resources TEXT NOT NULL DEFAULT '[]',
+        checksum TEXT NOT NULL,
+        FOREIGN KEY (service_id) REFERENCES services(id) ON DELETE CASCADE
+      )
+    `);
+
+    query('CREATE INDEX IF NOT EXISTS idx_backups_service ON backups(service_id)');
+    query('CREATE INDEX IF NOT EXISTS idx_backups_created ON backups(created_at DESC)');
+  }
+}