Add GitHub Actions workflow for PR testing

- Add test.yml workflow that runs on pull requests to main
- Include linting, pytest execution, and coverage reporting
- Use uv for efficient dependency management with Python 3.11
- Remove redundant python-lint.yaml workflow
- Integrate Codecov for test coverage tracking

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: natifridman

.github/workflows/python-lint.yaml

@@ -0,0 +1,59 @@
+name: Tests
+
+on:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  lint:
+    name: Code Linting
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Install uv
+      uses: astral-sh/setup-uv@v3
+      with:
+        version: "latest"
+    
+    - name: Set up Python
+      run: uv python install 3.11
+    
+    - name: Install dependencies
+      run: uv sync --dev
+    
+    - name: Run flake8
+      run: uv run flake8 src/ --max-line-length=120 --ignore=E501,W503
+
+  test:
+    name: Tests & Coverage
+    runs-on: ubuntu-latest
+    needs: lint
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Install uv
+      uses: astral-sh/setup-uv@v3
+      with:
+        version: "latest"
+    
+    - name: Set up Python
+      run: uv python install 3.11
+    
+    - name: Install dependencies
+      run: uv sync --dev
+    
+    - name: Run tests with coverage
+      run: |
+        uv add --dev pytest-cov
+        uv run pytest tests/ --cov=src --cov-report=xml --cov-report=term -v --tb=short
+    
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v4
+      with:
+        file: ./coverage.xml
+        flags: unittests
+        name: codecov-umbrella
+        fail_ci_if_error: false