Fix CI build: Add missing test dependencies and fix test isolation

- Added @types/jest, jest, ts-jest, typescript to devDependencies
- Fixed disconnect test to use separate driver instance to avoid breaking subsequent tests
- Ensures proper test isolation and cleanup

Co-authored-by: huangyiirene <7665279+huangyiirene@users.noreply.github.com>

Author: Copilot

packages/drivers/sql/package.json

@@ -27,6 +27,10 @@
     "knex": "^3.1.0"
   },
   "devDependencies": {
+    "@types/jest": "^29.0.0",
+    "jest": "^29.0.0",
+    "ts-jest": "^29.4.6",
+    "typescript": "^5.0.0",
     "sqlite3": "^5.1.7"
   }
 }

packages/drivers/sql/test/queryast.test.ts

@@ -74,9 +74,18 @@ describe('SqlDriver (QueryAST Format)', () => {
         });
 
         it('should support disconnect method', async () => {
-            await expect(driver.disconnect()).resolves.toBeUndefined();
+            // Create a separate driver instance for this test
+            const testDriver = new SqlDriver({
+                client: 'sqlite3',
+                connection: {
+                    filename: ':memory:'
+                },
+                useNullAsDefault: true
+            });
+            
+            await expect(testDriver.disconnect()).resolves.toBeUndefined();
             // After disconnect, health check should fail
-            const healthy = await driver.checkHealth();
+            const healthy = await testDriver.checkHealth();
             expect(healthy).toBe(false);
         });
     });