fix: resolve item repair logic and clear mongo damage flags

- Fixed incorrect form field key (`action_type` -> `action`) in admin route.
- Switched to MongoDB `$unset` to completely remove damage fields (`HasDamage`, `DamageText`, etc.) from the items collection instead of just setting them to false.
- Added cleanup logic to `$unset` damage flags from related active loans in the `borrowings` collection.
- Ensures repaired/replaced items correctly disappear from the damaged items UI.

Web/app.py

@@ -9145,10 +9145,12 @@ def admin_resolve_repair(item_id):
 
     return redirect(url_for('library_loans_admin'))
 
+
 def resolve_repaired_item_funct(item_id, action, new_code_4="", current_user="admin"):
     """
     Verarbeitet Items aus der Reparatur und aktualisiert die Serien-Counts
     sowie Parent/Child-Abhängigkeiten beim Löschen korrekt.
+    Entfernt Schadens-Flags komplett aus Items und zugehörigen Ausleihen.
     """
     if not ObjectId.is_valid(item_id):
         return False, "Ungültige Item-ID."
@@ -9158,12 +9160,25 @@ def resolve_repaired_item_funct(item_id, action, new_code_4="", current_user="ad
             db = client[cfg.MONGODB_DB]
             items = db['items']
 
+            borrowings = db['borrowings'] if 'borrowings' in db.list_collection_names() else None
+
             item = items.find_one({'_id': ObjectId(item_id)})
             if not item:
                 return False, "Item nicht in der Datenbank gefunden."
 
             series_group_id = item.get('SeriesGroupId')
 
+            damage_unset = {
+                'HasDamage': "",
+                'has_damage': "",
+                'DamageCount': "",
+                'damage_count': "",
+                'DamageText': "",
+                'damage_text': "",
+                'is_damaged': "",
+                'IsDamaged': ""
+            }
+
             # --- OPTION 1: DELETE ---
             if action == 'delete':
                 is_parent = not item.get('IsGroupedSubItem')
@@ -9208,35 +9223,43 @@ def resolve_repaired_item_funct(item_id, action, new_code_4="", current_user="ad
             elif action == 'replace':
                 items.update_one(
                     {'_id': ObjectId(item_id)},
-                    {'$set': {
-                        'Code_4': str(new_code_4).strip(),
-                        'Verfuegbar': True,
-                        'HasDamage': False,
-                        'has_damage': False,
-                        'DamageCount': 0,
-                        'damage_count': 0,
-                        'DamageText': '',
-                        'damage_text': '',
-                        'LastUpdated': datetime.datetime.now()
-                    }}
+                    {
+                        '$set': {
+                            'Code_4': str(new_code_4).strip(),
+                            'Verfuegbar': True,
+                            'LastUpdated': datetime.datetime.now()
+                        },
+                        '$unset': damage_unset
+                    }
                 )
+
+                if borrowings is not None:
+                    borrowings.update_many(
+                        {'$or': [{'item_id': str(item_id)}, {'item_id': ObjectId(item_id)}]},
+                        {'$unset': damage_unset}
+                    )
+
                 return True, f"Item wurde ersetzt. Neuer Code 4 zugewiesen: {new_code_4}."
 
             # --- OPTION 3: JUST REPAIR ---
             elif action == 'repair':
                 items.update_one(
                     {'_id': ObjectId(item_id)},
-                    {'$set': {
-                        'Verfuegbar': True,
-                        'HasDamage': False,
-                        'has_damage': False,
-                        'DamageCount': 0,
-                        'damage_count': 0,
-                        'DamageText': '',
-                        'damage_text': '',
-                        'LastUpdated': datetime.datetime.now()
-                    }}
+                    {
+                        '$set': {
+                            'Verfuegbar': True,
+                            'LastUpdated': datetime.datetime.now()
+                        },
+                        '$unset': damage_unset
+                    }
                 )
+
+                if borrowings is not None:
+                    borrowings.update_many(
+                        {'$or': [{'item_id': str(item_id)}, {'item_id': ObjectId(item_id)}]},
+                        {'$unset': damage_unset}
+                    )
+
                 return True, "Item wurde repariert und ist wieder regulär verfügbar."
 
             else: