Fix virtual environment setup in CI/CD and README

- Update GitHub Actions workflow to properly setup virtual environment
- Update README with correct venv activation instructions

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

Co-Authored-By: Claude <noreply@anthropic.com>

Author: arnesund

.github/workflows/test.yml

@@ -27,6 +27,8 @@ jobs:
         
     - name: Install dependencies
       run: |
+        uv venv
+        . .venv/bin/activate
         uv pip install -e .
         uv pip install pytest pytest-cov pytest-asyncio pytest-mock
         
@@ -38,6 +40,7 @@ jobs:
         
     - name: Run tests
       run: |
+        . .venv/bin/activate
         pytest --cov=. --cov-report=xml
         
     - name: Upload coverage report

README.md

@@ -57,7 +57,9 @@ uv run chainlit run chainlit_app.py --host 0.0.0.0
 The project uses pytest for testing. To run the tests:
 
 ```
-# Install test dependencies
+# Create virtual environment and install test dependencies
+uv venv
+. .venv/bin/activate
 uv pip install -e .
 uv pip install pytest pytest-cov pytest-asyncio pytest-mock