fix: harden DingTalk student synchronization

apps/server/src/database/database-migrations.service.ts

@@ -10,6 +10,7 @@ export class DatabaseMigrationsService implements OnApplicationBootstrap {
 
   async onApplicationBootstrap(): Promise<void> {
     await this.ensureAiConfigTable();
+    await this.ensureSyncStateLeaseColumns();
     await this.ensureCourseAttendanceSchema();
     await this.ensureAttendanceDevicesSchema();
     await this.ensureStudentWalletSchema();
@@ -23,6 +24,24 @@ export class DatabaseMigrationsService implements OnApplicationBootstrap {
     await this.normalizeClassroomStatuses();
   }
 
+  private async ensureSyncStateLeaseColumns(): Promise<void> {
+    const runner = this.dataSource.createQueryRunner();
+    await runner.connect();
+    try {
+      const table = await runner.getTable('sync_state');
+      if (!table) return;
+      const columns = new Set(table.columns.map((column) => column.name));
+      if (!columns.has('run_id')) {
+        await runner.query('ALTER TABLE sync_state ADD COLUMN run_id VARCHAR(64)');
+      }
+      if (!columns.has('running_since')) {
+        await runner.query('ALTER TABLE sync_state ADD COLUMN running_since DATETIME');
+      }
+    } finally {
+      await runner.release();
+    }
+  }
+
   private async ensureAttendanceDevicesSchema(): Promise<void> {
     const runner = this.dataSource.createQueryRunner();
     await runner.connect();

apps/server/src/database/database-migrations.spec.ts

@@ -49,6 +49,7 @@ function createDataSource(runner: MockRunner, dbType: string = 'better-sqlite3')
 // Type to reach private migration methods for testing
 interface MigrationsPrivate {
   ensureAiConfigTable(): Promise<void>;
+  ensureSyncStateLeaseColumns(): Promise<void>;
   backfillOrganizations(): Promise<void>;
   normalizeClassDates(): Promise<void>;
   ensureCourseAttendanceSchema(): Promise<void>;