"feat: Update Raspberry Pi installation scripts and templates for calendar

backend/app/install_raspberry_pi.sh

@@ -144,16 +144,40 @@ sudo -u "$APP_USER" ./venv/bin/pip install --upgrade pip
 # Installiere Python-Abhängigkeiten
 log "Installiere Python-Abhängigkeiten..."
 if [ -f "requirements.txt" ]; then
-    sudo -u "$APP_USER" ./venv/bin/pip install -r requirements.txt
+    # Erstelle korrigierte requirements.txt ohne Verweis auf andere Datei
+    cat > "$APP_DIR/requirements_fixed.txt" << 'EOF'
+# MYP Platform - Python Dependencies
+Flask==3.0.0
+Flask-Login==0.6.3
+Flask-WTF==1.2.1
+Flask-Limiter==3.5.0
+SQLAlchemy==2.0.41
+PyP100
+Werkzeug==3.0.1
+bcrypt==4.1.2
+redis==5.0.1
+cryptography==42.0.8
+pytest==7.4.3
+pytest-cov==4.1.0
+gunicorn==21.2.0
+psutil==5.9.6
+requests==2.31.0
+Jinja2==3.1.2
+MarkupSafe==2.1.3
+itsdangerous==2.1.2
+EOF
+    
+    sudo -u "$APP_USER" ./venv/bin/pip install -r requirements_fixed.txt
 else
     # Fallback: Installiere grundlegende Pakete
     sudo -u "$APP_USER" ./venv/bin/pip install \
         flask \
         flask-login \
-        flask-sqlalchemy \
+        flask-wtf \
+        flask-limiter \
+        sqlalchemy \
         werkzeug \
         requests \
-        python-dotenv \
         gunicorn
 fi
 
@@ -162,17 +186,25 @@ if [ -f "package.json" ]; then
     log "Installiere Node.js Abhängigkeiten..."
     sudo -u "$APP_USER" npm install
     
-    # Baue Frontend-Assets
+    # Baue Frontend-Assets falls Tailwind vorhanden
     if [ -f "tailwind.config.js" ]; then
-        log "Baue Frontend-Assets..."
-        sudo -u "$APP_USER" npm run build || true
+        log "Baue Frontend-Assets mit Tailwind CSS..."
+        sudo -u "$APP_USER" npm run build:css || true
     fi
 fi
 
 # Datenbank initialisieren
 log "Initialisiere Datenbank..."
-if [ -f "init_db.py" ]; then
-    sudo -u "$APP_USER" ./venv/bin/python init_db.py
+if [ -f "models.py" ]; then
+    # Erstelle einfaches DB-Init-Skript
+    cat > "$APP_DIR/init_simple_db.py" << 'EOF'
+from app import app, db
+with app.app_context():
+    db.create_all()
+    print("Datenbank wurde initialisiert")
+EOF
+    sudo -u "$APP_USER" ./venv/bin/python init_simple_db.py || true
+    rm -f "$APP_DIR/init_simple_db.py"
 else
     sudo -u "$APP_USER" touch database.db
 fi