add migration

ts/database/migrations/migration-010-backup-schedules.ts

@@ -0,0 +1,39 @@
+import { BaseMigration } from './base-migration.ts';
+import type { TQueryFunction } from '../types.ts';
+
+export class Migration010BackupSchedules extends BaseMigration {
+  readonly version = 10;
+  readonly description = 'Backup schedules table';
+
+  up(query: TQueryFunction): void {
+    query(`
+      CREATE TABLE backup_schedules (
+        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        service_id INTEGER NOT NULL,
+        service_name TEXT NOT NULL,
+        cron_expression TEXT NOT NULL,
+        retention_tier TEXT NOT NULL,
+        enabled INTEGER NOT NULL DEFAULT 1,
+        last_run_at REAL,
+        next_run_at REAL,
+        last_status TEXT,
+        last_error TEXT,
+        created_at REAL NOT NULL,
+        updated_at REAL NOT NULL,
+        FOREIGN KEY (service_id) REFERENCES services(id) ON DELETE CASCADE
+      )
+    `);
+
+    query(
+      'CREATE INDEX IF NOT EXISTS idx_backup_schedules_service ON backup_schedules(service_id)',
+    );
+    query(
+      'CREATE INDEX IF NOT EXISTS idx_backup_schedules_enabled ON backup_schedules(enabled)',
+    );
+
+    query('ALTER TABLE backups ADD COLUMN retention_tier TEXT');
+    query(
+      'ALTER TABLE backups ADD COLUMN schedule_id INTEGER REFERENCES backup_schedules(id) ON DELETE SET NULL',
+    );
+  }
+}