feat: add husky pre-commit hooks and reusable CI lint workflow

- Add husky with lint-staged for pre-commit checks (eslint --fix, prettier --write)
- Add reusable lint.yml workflow (eslint, prettier, tsc)
- Gate docker, release, and CI pipelines behind lint job via needs: lint

.github/workflows/docker.yml

@@ -13,7 +13,11 @@ env:
   IMAGE_NAME: ${{ github.repository }}
 
 jobs:
+  lint:
+    uses: ./.github/workflows/lint.yml
+
   build-and-push:
+    needs: lint
     runs-on: ubuntu-latest
     permissions:
       contents: read