fix: re-enable test workflow with reliable triggers and production gate

- Re-enable test.yml to run on PRs to main (not every push)
- Add cache validation with fallback to fresh install for both Python/Node
- Add PyPI fallback when mirror fails
- Increase pytest timeout from 30s to 60s
- Add backend+frontend test gate to production deploy workflow

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/test.yml

@@ -1,17 +1,12 @@
 name: Run Tests
 
 on:
+  pull_request:
+    branches: [main]
+    paths:
+      - 'dashboard/**'
+      - '.gitea/workflows/test.yml'
   workflow_dispatch:
-  # push:
-  #   branches: [main]
-  #   paths:
-  #     - 'dashboard/**'
-  #     - '.gitea/workflows/test.yml'
-  # pull_request:
-  #   branches: [main]
-  #   paths:
-  #     - 'dashboard/**'
-  #     - '.gitea/workflows/test.yml'
 
 jobs:
   backend-tests:
@@ -55,23 +50,33 @@ jobs:
           cd dashboard/backend
           if [ "${{ steps.cache-python.outputs.cache-hit }}" = "true" ]; then
             echo "Restoring venv from cache $CACHE_KEY..."
-            cp -a $CACHE_DIR/venv .
+            if cp -a $CACHE_DIR/venv . && [ -f venv/bin/activate ]; then
+              echo "Cache restored successfully"
+            else
+              echo "Cache corrupted, installing fresh..."
+              rm -rf venv
+              python3 -m venv venv
+              . venv/bin/activate
+              pip install --cache-dir=$PIP_CACHE_DIR -r requirements.txt || pip install -r requirements.txt
+              pip install --cache-dir=$PIP_CACHE_DIR -r requirements-dev.txt || pip install -r requirements-dev.txt
+              pip install --cache-dir=$PIP_CACHE_DIR pytest-timeout pytest-cov || pip install pytest-timeout pytest-cov
+            fi
           else
             echo "Installing fresh dependencies..."
             python3 -m venv venv
             . venv/bin/activate
-            pip install --cache-dir=$PIP_CACHE_DIR -r requirements.txt
-            pip install --cache-dir=$PIP_CACHE_DIR -r requirements-dev.txt
-            pip install --cache-dir=$PIP_CACHE_DIR pytest-timeout pytest-cov
+            pip install --cache-dir=$PIP_CACHE_DIR -r requirements.txt || pip install -r requirements.txt
+            pip install --cache-dir=$PIP_CACHE_DIR -r requirements-dev.txt || pip install -r requirements-dev.txt
+            pip install --cache-dir=$PIP_CACHE_DIR pytest-timeout pytest-cov || pip install pytest-timeout pytest-cov
             echo "Saving venv to cache $CACHE_KEY..."
-            cp -a venv $CACHE_DIR/
+            cp -a venv $CACHE_DIR/ || echo "Warning: cache save failed"
           fi
 
       - name: Run tests with coverage
         run: |
           cd dashboard/backend
           . venv/bin/activate
-          pytest tests/ -v --timeout=30 \
+          pytest tests/ -v --timeout=60 \
             --cov=. --cov-report=xml --cov-report=term \
             --junit-xml=test-results.xml \
             --cov-fail-under=49
@@ -138,12 +143,18 @@ jobs:
           cd dashboard/frontend
           if [ "${{ steps.cache-node.outputs.cache-hit }}" = "true" ]; then
             echo "Restoring from cache $CACHE_KEY..."
-            cp -a $CACHE_DIR/node_modules .
+            if cp -a $CACHE_DIR/node_modules . && [ -d node_modules ]; then
+              echo "Cache restored successfully"
+            else
+              echo "Cache corrupted, installing fresh..."
+              rm -rf node_modules
+              npm ci
+            fi
           else
             echo "Installing fresh dependencies..."
             npm ci
             echo "Saving to cache $CACHE_KEY..."
-            cp -a node_modules $CACHE_DIR/
+            cp -a node_modules $CACHE_DIR/ || echo "Warning: cache save failed"
           fi
 
       - name: Run tests