fix: resolve CI build failures

- Fix ruff configuration in pyproject.toml (moved settings to correct sections)
- Use python -m ruff for lint check to resolve PATH issues
- Added proper pip upgrade before installing dependencies

.gitea/workflows/ci.yml

@@ -37,11 +37,13 @@ jobs:
           python-version: '3.11'
           cache: 'pip'
 
-      - name: Install ruff
+      - name: Install dependencies
-        run: pip install ruff
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install ruff
 
       - name: Run ruff check
-        run: ruff check git_commit_ai/ || true
+        run: python -m ruff check git_commit_ai/ || true
 
   build:
     runs-on: ubuntu-latest