fix: correct test assertions and add dependency caching

- Fix logout test to expect {ok: true} instead of {message: ...}
- Fix logout without auth test (endpoint doesn't require auth)
- Fix password change tests to use current_password instead of old_password
- Fix password change error code expectation (400 instead of 401)
- Add Python venv caching to speed up backend tests
- Add Node modules caching to speed up frontend tests
- Cache is keyed by requirements/package-lock file hashes

.gitea/workflows/test.yml

@@ -25,14 +25,37 @@ jobs:
           python3 --version
           pip3 --version
 
+      - name: Cache Python dependencies
+        id: cache-python
+        run: |
+          CACHE_KEY="python-$(md5sum dashboard/backend/requirements.txt dashboard/backend/requirements-dev.txt | md5sum | cut -d' ' -f1)"
+          CACHE_DIR="/tmp/pytest-cache/$CACHE_KEY"
+          echo "CACHE_DIR=$CACHE_DIR" >> $GITHUB_ENV
+          if [ -d "$CACHE_DIR" ]; then
+            echo "Cache hit for $CACHE_KEY"
+            echo "cache-hit=true" >> $GITHUB_OUTPUT
+          else
+            echo "Cache miss for $CACHE_KEY"
+            echo "cache-hit=false" >> $GITHUB_OUTPUT
+            mkdir -p "$CACHE_DIR"
+          fi
+
       - name: Install dependencies
         run: |
           cd dashboard/backend
-          python3 -m venv venv
-          . venv/bin/activate
-          pip install -r requirements.txt
-          pip install -r requirements-dev.txt
-          pip install pytest-timeout
+          if [ "${{ steps.cache-python.outputs.cache-hit }}" = "true" ]; then
+            echo "Restoring from cache..."
+            cp -r $CACHE_DIR/venv .
+          else
+            echo "Installing fresh dependencies..."
+            python3 -m venv venv
+            . venv/bin/activate
+            pip install -r requirements.txt
+            pip install -r requirements-dev.txt
+            pip install pytest-timeout
+            # Save to cache
+            cp -r venv $CACHE_DIR/
+          fi
 
       - name: Run unit tests
         run: |
@@ -62,12 +85,35 @@ jobs:
           node --version
           npm --version
 
+      - name: Cache Node dependencies
+        id: cache-node
+        run: |
+          CACHE_KEY="node-$(md5sum dashboard/frontend/package-lock.json | cut -d' ' -f1)"
+          CACHE_DIR="/tmp/npm-cache/$CACHE_KEY"
+          echo "CACHE_DIR=$CACHE_DIR" >> $GITHUB_ENV
+          if [ -d "$CACHE_DIR" ]; then
+            echo "Cache hit for $CACHE_KEY"
+            echo "cache-hit=true" >> $GITHUB_OUTPUT
+          else
+            echo "Cache miss for $CACHE_KEY"
+            echo "cache-hit=false" >> $GITHUB_OUTPUT
+            mkdir -p "$CACHE_DIR"
+          fi
+
       - name: Install dependencies
         env:
           NODE_OPTIONS: "--max-old-space-size=2048"
         run: |
           cd dashboard/frontend
-          npm ci
+          if [ "${{ steps.cache-node.outputs.cache-hit }}" = "true" ]; then
+            echo "Restoring from cache..."
+            cp -r $CACHE_DIR/node_modules .
+          else
+            echo "Installing fresh dependencies..."
+            npm ci
+            # Save to cache
+            cp -r node_modules $CACHE_DIR/
+          fi
 
       - name: Run tests
         env: