🔧 (.github/workflows): add virtual environment setup step in CI workflows for better isolation

Author: tumf

.github/workflows/publish.yml

@@ -27,6 +27,7 @@ jobs:
 
       - name: Install dependencies
         run: |
+          uv venv
           uv pip install -e ".[dev,test]"
 
       - name: Run tests and checks

.github/workflows/test.yml

@@ -28,6 +28,7 @@ jobs:
 
       - name: Install dependencies
         run: |
+          uv venv
           uv pip install -e ".[dev,test]"
 
       - name: Run format checks and typecheck