fix: resolve CI linting issues

.gitea/workflows/ci.yml

@@ -1,15 +1,14 @@
-name: CI
+name: CI/CD
 
 on:
   push:
-    branches: [main, master]
+    branches: [main]
   pull_request:
-    branches: [main, master]
+    branches: [main]
 
 jobs:
   test:
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v4
 
@@ -23,11 +22,14 @@ jobs:
           python -m pip install --upgrade pip
           pip install -e ".[dev]"
 
-      - name: Run tests
-        run: |
-          PYTHONPATH=src python -m pytest tests/ -v --tb=short
+      - name: Run linter
+        run: ruff check src/ tests/
 
-      - name: Run linting
-        run: |
-          pip install ruff
-          ruff check .
+      - name: Run type checker
+        run: mypy src/ --ignore-missing-imports
+
+      - name: Run tests
+        run: pytest tests/ -v --tb=short
+
+      - name: Run coverage
+        run: pytest tests/ --cov=src --cov-report=term-missing