refactor: improve CI workflows with test dependencies and path filters

- Add path filters to test.yml to only run on code changes
- Make deploy workflows depend on tests passing first
- Standardize all workflows to use actions/checkout@v4
- Add health checks and better error messages to deployments
- Add build cache support for faster builds
- Document all improvements in IMPROVEMENTS.md

This prevents broken code from being deployed and reduces unnecessary CI runs.

.gitea/workflows/test.yml

@@ -3,8 +3,14 @@ name: Run Tests
 on:
   push:
     branches: [main, dev]
+    paths:
+      - 'dashboard/**'
+      - '.gitea/workflows/test.yml'
   pull_request:
     branches: [main]
+    paths:
+      - 'dashboard/**'
+      - '.gitea/workflows/test.yml'
 
 jobs:
   backend-tests:
@@ -15,10 +21,9 @@ jobs:
 
     steps:
       - name: Checkout repository
-        run: |
-          git clone --depth 1 http://gitea:3000/jimmy/nas-tools.git .
-          git fetch --depth 1 origin ${{ github.sha }}
-          git checkout ${{ github.sha }}
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
 
       - name: Setup Python
         run: |
@@ -54,11 +59,9 @@ jobs:
             echo "Installing fresh dependencies..."
             python3 -m venv venv
             . venv/bin/activate
-            # Use Tsinghua PyPI mirror for faster downloads in China
             pip install --cache-dir=$PIP_CACHE_DIR -i https://pypi.tuna.tsinghua.edu.cn/simple -r requirements.txt
             pip install --cache-dir=$PIP_CACHE_DIR -i https://pypi.tuna.tsinghua.edu.cn/simple -r requirements-dev.txt
             pip install --cache-dir=$PIP_CACHE_DIR -i https://pypi.tuna.tsinghua.edu.cn/simple pytest-timeout pytest-cov
-            # Save to cache
             echo "Saving venv to cache $CACHE_KEY..."
             cp -a venv $CACHE_DIR/
           fi
@@ -72,7 +75,6 @@ jobs:
             --junit-xml=test-results.xml \
             --cov-fail-under=49
 
-          # Explicitly check exit code
           if [ $? -ne 0 ]; then
             echo "❌ Backend tests failed!"
             exit 1
@@ -103,10 +105,9 @@ jobs:
 
     steps:
       - name: Checkout repository
-        run: |
-          git clone --depth 1 http://gitea:3000/jimmy/nas-tools.git .
-          git fetch --depth 1 origin ${{ github.sha }}
-          git checkout ${{ github.sha }}
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
 
       - name: Setup Node.js
         run: |
@@ -140,7 +141,6 @@ jobs:
           else
             echo "Installing fresh dependencies..."
             npm ci
-            # Save to cache
             echo "Saving to cache $CACHE_KEY..."
             cp -a node_modules $CACHE_DIR/
           fi
@@ -152,7 +152,6 @@ jobs:
           cd dashboard/frontend
           npm run test:coverage -- --reporter=verbose --run --pool=forks --poolOptions.forks.maxForks=2
 
-          # Explicitly check exit code
           if [ $? -ne 0 ]; then
             echo "❌ Frontend tests failed!"
             exit 1