modifies backend test coverage and installation

Author: Khauneesh-AI

.github/workflows/python-app.yml

@@ -14,19 +14,23 @@ jobs:
         python-version: ["3.10"]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
-
-    - name: Install dependencies
+    # ---------- install uv -------------------------------------------------
+    - name: Install uv (fast dependency resolver)
       run: |
-        python -m pip install --upgrade pip
-        pip install pytest pytest-asyncio pytest-cov requests-mock boto3 moto
-        pip install -r requirements.txt
+        python -m pip install --upgrade pip uv
 
+    # ---------- reproduce locked env --------------------------------------
+    - name: Sync project dependencies from uv.lock
+      run: |
+        uv pip install --system -r uv.lock
+    
+  # ---------- run test suite -----------------------------------
     - name: Run tests and generate coverage report
       run: |
         pytest tests/ --cov=app --cov-report=xml