feat: Add last_verified timestamp to groups table

src/db.ts

@@ -33,7 +33,8 @@ export function initializeDatabase() {
     CREATE TABLE IF NOT EXISTS groups (
       id TEXT PRIMARY KEY,
       community_id TEXT NOT NULL,
-      name TEXT
+      name TEXT,
+      last_verified TIMESTAMP DEFAULT CURRENT_TIMESTAMP
     );
   `);
 }

tests/unit/db.test.ts

@@ -31,6 +31,13 @@ describe('Database', () => {
     expect(tasksColumns).toContain('description');
     expect(tasksColumns).toContain('due_date');
 
+    // Verify groups table has last_verified column
+    const groupsColumns = db
+      .query("PRAGMA table_info(groups)")
+      .all()
+      .map((c: any) => c.name);
+    expect(groupsColumns).toContain('last_verified');
+
     // Verify foreign key constraint
     const fkInfo = db
       .query("PRAGMA foreign_key_list(task_assignments)")