Enhance deployment scripts and frontend components for improved functionality and styling

- Added dependency installation step in deploy-frontend.sh and update-frontend.sh to ensure all required packages are available before building the frontend.
- Updated AppNavigation.vue to change background color for better visual appeal.
- Refactored FamilyView.vue to include 3D character models for both the user and their relationships, enhancing the visual representation of family dynamics.
- Modified OverviewView.vue to switch from 3D character rendering to a 2D avatar display, improving loading performance and user experience.

update-frontend.sh

@@ -45,6 +45,18 @@ echo "VITE_API_BASE_URL=$VITE_API_BASE_URL"
 echo "VITE_DAEMON_SOCKET=$VITE_DAEMON_SOCKET"
 echo "VITE_CHAT_WS_URL=$VITE_CHAT_WS_URL"
 
+# 5a. Dependencies installieren
+echo "Installiere Dependencies..."
+npm install
+
+if [ $? -ne 0 ]; then
+    echo "❌ npm install fehlgeschlagen!"
+    # Temporäre .env-Datei aufräumen
+    rm -f "$TEMP_ENV"
+    exit 1
+fi
+
+# 5b. Frontend neu bauen
 npm run build
 
 if [ $? -ne 0 ]; then