fix: resolve CI issues - remove unused imports and fix code quality

.gitea/workflows/repohealth.yml

@@ -0,0 +1,23 @@
+name: repohealth-cli CI
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'repohealth-cli/**'
+  pull_request:
+    branches: [main]
+    paths:
+      - 'repohealth-cli/**'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+      - run: cd repohealth-cli && pip install -e ".[dev]"
+      - run: cd repohealth-cli && pytest tests/ -v
+      - run: cd repohealth-cli && ruff check src/ tests/