Datei Upload und Download fix

backend/routes/knowledge.js

@@ -12,6 +12,7 @@ const multer = require('multer');
 const { getDb } = require('../database');
 const logger = require('../utils/logger');
 const { validators, stripHtml } = require('../middleware/validation');
+const notificationService = require('../services/notificationService');
 
 // Upload-Konfiguration für Knowledge-Anhänge
 const UPLOAD_DIR = path.join(__dirname, '..', 'uploads', 'knowledge');
@@ -498,6 +499,53 @@ router.post('/entries', (req, res) => {
 
     logger.info(`Knowledge-Eintrag erstellt: ${title}`);
 
+    // Benachrichtigung an alle Nutzer senden
+    const io = req.app.get('io');
+    if (io) {
+      // Alle Nutzer abrufen (außer dem Ersteller)
+      const users = db.prepare(`
+        SELECT id FROM users 
+        WHERE id != ?
+      `).all(req.user.id);
+
+      // Benachrichtigung für jeden Nutzer erstellen
+      users.forEach(user => {
+        notificationService.create(
+          user.id,
+          'knowledge:new_entry',
+          {
+            entryId: entry.id,
+            entryTitle: entry.title,
+            categoryName: category.name,
+            categoryId: category.id,
+            projectId: null,
+            actorId: req.user.id
+          },
+          io,
+          false // nicht persistent
+        );
+      });
+
+      // Socket.io Event für Echtzeit-Update senden
+      io.emit('knowledge:created', {
+        entry: {
+          id: entry.id,
+          categoryId: entry.category_id,
+          categoryName: category.name,
+          categoryColor: category.color,
+          title: entry.title,
+          url: entry.url,
+          notes: entry.notes,
+          position: entry.position,
+          attachmentCount: 0,
+          createdBy: entry.created_by,
+          creatorName: req.user.display_name,
+          createdAt: entry.created_at,
+          updatedAt: entry.updated_at
+        }
+      });
+    }
+
     res.status(201).json({
       id: entry.id,
       categoryId: entry.category_id,