ci: add debug output for typecheck failures

Author: Raylan LIN

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: oven-sh/setup-bun@v2
       - run: bun install
-      - run: bun run typecheck
+      - run: bun run typecheck 2>&1 || (npx tsc --noEmit 2>&1; echo "EXIT: $?"; exit 1)
       - run: bun test
       - name: Smoke test
         run: |