ci: add mrt-utilities to CI workflow (#369)

MRT utilities was missing from CI — lint, typecheck, and test errors
were not caught. Add it to both Linux and Windows CI jobs, fix an
existing lint error (unused catch variable), and add the test:ci script.

Author: clavery

.github/workflows/ci.yml

@@ -76,9 +76,15 @@ jobs:
         working-directory: packages/b2c-cli
         run: pnpm run pretest && pnpm run test:ci && pnpm run lint
 
+      - name: Run MRT Utilities tests
+        id: mrt-test
+        if: always() && steps.cli-test.conclusion != 'cancelled'
+        working-directory: packages/mrt-utilities
+        run: pnpm run pretest && pnpm run test:ci && pnpm run lint
+
       - name: Run VS Extension checks
         id: vs-extension-test
-        if: always() && steps.cli-test.conclusion != 'cancelled'
+        if: always() && steps.mrt-test.conclusion != 'cancelled'
         working-directory: packages/b2c-vs-extension
         run: pnpm run typecheck:agent && pnpm run lint
 
@@ -167,8 +173,13 @@ jobs:
         # the Linux-calibrated 70% threshold even though the tests pass.
         # Coverage is still generated and uploaded for inspection.
         run: pnpm run pretest && pnpm run test:ci:win && pnpm run lint
-      - name: Run VS Extension checks
+      - name: Run MRT Utilities tests
+        id: mrt-test
         if: always() && steps.cli-test.conclusion != 'cancelled'
+        working-directory: packages/mrt-utilities
+        run: pnpm run pretest && pnpm run test:ci && pnpm run lint
+      - name: Run VS Extension checks
+        if: always() && steps.mrt-test.conclusion != 'cancelled'
         working-directory: packages/b2c-vs-extension
         run: pnpm run typecheck:agent && pnpm run lint
       - name: Print Windows test failures

packages/mrt-utilities/package.json

@@ -100,6 +100,7 @@
     "format:check": "prettier --check .",
     "pretest": "tsc --noEmit -p test",
     "test": "c8 mocha --forbid-only \"test/**/*.test.ts\"",
+    "test:ci": "c8 mocha --forbid-only --reporter json --reporter-option output=test-results.json \"test/**/*.test.ts\"",
     "test:agent": "mocha --forbid-only --reporter min \"test/**/*.test.ts\"",
     "test:watch": "mocha --watch \"test/**/*.test.ts\""
   },