Run types and lint checks directly in CI

Author: Copilot

.github/workflows/ci.yml

@@ -59,14 +59,9 @@ jobs:
           JSDBG_TEST_VERSION: insiders
           DISPLAY: ':99.0'
 
-      - name: npm test
-        run: npm test
-        timeout-minutes: 12
-        env:
-          JSDBG_TEST_VERSION: insiders
-          JSDBG_USE_NODE_VERSION: ${{ matrix.node_version }}
-          DISPLAY: ':99.0'
+      - name: npm run test:types
+        run: npm run test:types
 
       - name: gulp lint
         if: ${{ !matrix.only_minspec }}
-        run: npx gulp lint
+        run: npm run test:lint