Demo-Modus entfernt

isDemoMode war nie aktiv: appwrite.js hat immer eine Projekt-ID als
Fallback. Weg sind die Demo-Zweige in Anmeldung und Hooks sowie die
Beispieldaten aus der alten IT-Welt (Serverausfall, Drucker, Kunde A–E).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/hooks/useWebsiteProjects.js

@@ -1,5 +1,5 @@
 import { useState, useCallback } from 'react'
-import { databases, DATABASE_ID, COLLECTIONS, Query, isDemoMode } from '../lib/appwrite'
+import { databases, DATABASE_ID, COLLECTIONS, Query } from '../lib/appwrite'
 
 export function useWebsiteProjects() {
   const [projects, setProjects] = useState([])
@@ -7,7 +7,6 @@ export function useWebsiteProjects() {
   const [error, setError] = useState(null)
 
   const fetchAllProjects = useCallback(async () => {
-    if (isDemoMode) return []
     setLoading(true)
     setError(null)
     try {
@@ -26,7 +25,7 @@ export function useWebsiteProjects() {
   }, [])
 
   const fetchByTicketId = useCallback(async (ticketId) => {
-    if (!ticketId || isDemoMode) return []
+    if (!ticketId) return []
     try {
       const response = await databases.listDocuments(
         DATABASE_ID, COLLECTIONS.WEBSITE_PROJECTS,