Enhance booking user decryption and improve item modal styling

Web/app.py

@@ -5918,6 +5918,11 @@ def get_bookings():
 
         result = []
         for booking in bookings:
+            raw_booking_user = booking.get('User') or ''
+            try:
+                booking_user = decrypt_text(raw_booking_user) if raw_booking_user else ''
+            except Exception:
+                booking_user = str(raw_booking_user)
             start_dt = booking.get('Start')
             if not start_dt:
                 continue
@@ -5960,10 +5965,10 @@ def get_bookings():
                 'end': end_dt.isoformat() if isinstance(end_dt, datetime.datetime) else str(end_dt),
                 'status': status,
                 'itemId': item_id,
-                'userName': str(booking.get('User') or ''),
+                'userName': str(booking_user),
                 'notes': str(booking.get('Notes') or ''),
                 'period': period,
-                'isCurrentUser': str(booking.get('User') or '') == username,
+                'isCurrentUser': str(booking_user) == username,
                 'itemBorrower': item_borrower,
             })
 
@@ -7911,9 +7916,14 @@ def get_planned_bookings(item_id):
         cursor = ausleihungen.find({'Item': item_id, 'Status': 'planned'}).sort('Start', 1)
         bookings = []
         for r in cursor:
+            raw_user = r.get('User') or ''
+            try:
+                booking_user = decrypt_text(raw_user) if raw_user else ''
+            except Exception:
+                booking_user = str(raw_user)
             bookings.append({
                 'id': str(r.get('_id')),
-                'user': r.get('User', ''),
+                'user': booking_user,
                 'period': r.get('Period'),
                 'start': r.get('Start').isoformat() if r.get('Start') else None,
                 'end': r.get('End').isoformat() if r.get('End') else None,
@@ -7940,7 +7950,13 @@ def get_planned_bookings_public(item_id):
         cursor = ausleihungen.find({'Item': item_id, 'Status': 'planned'}).sort('Start', 1)
         bookings = []
         for r in cursor:
+            raw_user = r.get('User') or ''
+            try:
+                booking_user = decrypt_text(raw_user) if raw_user else ''
+            except Exception:
+                booking_user = str(raw_user)
             bookings.append({
+                'user': booking_user,
                 'period': r.get('Period'),
                 'start': r.get('Start').isoformat() if r.get('Start') else None,
                 'end': r.get('End').isoformat() if r.get('End') else None
@@ -12311,7 +12327,11 @@ def cancel_ausleihung_route(id):
             
         # Log ausleihung details for debugging
         ausleihung_status = ausleihung.get('Status', 'unknown')
-        ausleihung_user = ausleihung.get('User', 'unknown')
+        raw_ausleihung_user = ausleihung.get('User', '')
+        try:
+            ausleihung_user = decrypt_text(raw_ausleihung_user) if raw_ausleihung_user else ''
+        except Exception:
+            ausleihung_user = str(raw_ausleihung_user or '')
         print(f"Found ausleihung: ID={id}, Status={ausleihung_status}")
 
         current_permissions = us.get_effective_permissions(session['username'])