feat(ci): add lint and typecheck steps to CI

This commit adds two new steps to the GitHub Actions CI workflow:
- `bun run lint` for linting the code
- `bun run typecheck` for type checking

These steps will help ensure code quality and correctness.

.github/workflows/ci.yaml

@@ -10,9 +10,14 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
       - uses: oven-sh/setup-bun@v2
         with:
           bun-version: latest
       - run: bun i --frozen-lockfile
       - run: bun run prepare
+      - run: bun run lint
+      - run: bun run typecheck
       - run: bun run test