ci: Add linter, minor lint fixes

.github/workflows/lint.yml

@@ -0,0 +1,26 @@
+name: Lint
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+          python-version: "3.14"
+
+      - name: Run Ruff Check
+        run: uv run ruff check .
+
+      - name: Run Ruff Format Check
+        run: uv run ruff format --check .