updated view and database

config/database_config.py

@@ -42,11 +42,41 @@ class DatabaseConfig:
         """Create all database tables"""
         try:
             Base.metadata.create_all(self.engine)
+            self.ensure_schema()
             logging.info("Database tables created successfully")
             return True
         except Exception as e:
             logging.error(f"Error creating database tables: {e}")
             return False
+
+    def ensure_schema(self):
+        """Idempotently add columns that were introduced after the table was first
+        created. SQLAlchemy's create_all() never ALTERs existing tables, so new
+        columns on an existing SQLite database must be added manually.
+        """
+        from sqlalchemy import text
+        # Columns added over time: (table, column, SQL type definition)
+        required_columns = [
+            ('devices', 'wmt_last_seen', 'DATETIME'),
+            ('devices', 'config_synced_at', 'DATETIME'),
+            ('devices', 'custom_chrome_url', 'VARCHAR(500)'),
+        ]
+        try:
+            with self.engine.connect() as conn:
+                for table, column, col_type in required_columns:
+                    exists = conn.execute(
+                        text("SELECT name FROM sqlite_master WHERE type='table' AND name=:t"),
+                        {'t': table},
+                    ).fetchone()
+                    if not exists:
+                        continue
+                    cols = [row[1] for row in conn.execute(text(f"PRAGMA table_info({table})")).fetchall()]
+                    if column not in cols:
+                        conn.execute(text(f"ALTER TABLE {table} ADD COLUMN {column} {col_type}"))
+                        conn.commit()
+                        logging.info(f"Schema: added column {table}.{column}")
+        except Exception as e:
+            logging.error(f"Error ensuring schema columns: {e}")
             
     def drop_tables(self):
         """Drop all database tables (use with caution!)"""