Changes to the Button style for non mobile devices to have a smohter

Zusätzlich wurde die Item-Suche robuster gemacht:

Vergleich gegen Benutzername
Vergleich gegen Benutzer-ObjectId
Vergleich gegen session['user_id']
Unterstützung für verschlüsselte und unverschlüsselte Benutzerwerte
Unterstützung für Item-IDs als String und als MongoDB-ObjectId
Geändert wurde:

Web/app.py

Legal/TEST_AUSLEIHUNG.md

@@ -20,13 +20,19 @@ pytest test_ausleihung.py -vv --tb=long
 
 ## Test Coverage
 
-### ✅ Status Determination (5 tests)
+### ✅ Status Determination
 - Future borrowings marked as 'planned'
 - Current borrowings marked as 'active'
-- Past borrowings marked as 'completed'
+- Active borrowings remain 'active' after the planned end until return confirmation
 - Cancelled status never changes
 - Active borrowings without end time
 
+### ✅ Inventory borrowing workflow
+- Planned inventory borrowings activate automatically at their start when the item is available
+- Unavailable items remain planned and notify the requester and current holder
+- Reaching the planned end creates a return warning instead of an automatic return
+- The item is completed and made available only after the user confirms the return
+
 ### ✅ Create Operations (2 tests)
 - Create immediately active borrowing
 - Create planned/future borrowing

Web/app.py

@@ -468,6 +468,10 @@ def _enforce_active_session_user():
         return None
 
     username = session.get('username')
+    current_user_id = session.get('user_id')
+    if not current_user_id:
+        current_user = us.get_user(username)
+        current_user_id = str(current_user['_id']) if current_user and current_user.get('_id') else None
     if not username:
         return None
 
@@ -1378,6 +1382,10 @@ def update_appointment_statuses():
         for appointment in appointments_to_check:
             old_status = appointment.get('Status')
             activation_user = str(appointment.get('User') or '').strip()
+            try:
+                activation_user = decrypt_text(activation_user) if activation_user else ''
+            except Exception:
+                pass
             activation_item_name = str(appointment.get('Item') or 'Termin')
 
             # is_library_item expects an item document, not the stored item id.
@@ -1400,9 +1408,107 @@ def update_appointment_statuses():
                     )
             item_is_library = it.is_library_item(item_doc_for_status)
 
-            # Aktuellen Status bestimmen
+            # Aktuellen Status bestimmen. Eine aktive Ausleihe bleibt bis zur
+            # bestätigten Rückgabe aktiv, auch wenn ihr Endzeitpunkt erreicht ist.
             new_status = au.get_current_status(appointment, log_changes=True, user='scheduler')
 
+            # Inventarreservierungen werden erst beim tatsächlichen Start aktiviert.
+            # Ist kein Exemplar frei, bleibt die Reservierung geplant und beide
+            # betroffenen Nutzer werden einmalig benachrichtigt.
+            if (
+                old_status == 'planned'
+                and new_status == 'active'
+                and not item_is_library
+                and appointment.get('Item')
+            ):
+                item_id = appointment.get('Item')
+                item_doc = None
+                item_queries = [{'_id': item_id}]
+                try:
+                    item_queries.insert(0, {'_id': ObjectId(str(item_id))})
+                except (InvalidId, TypeError):
+                    pass
+                item_doc = items_col.find_one({'$or': item_queries})
+
+                available = bool(item_doc and item_doc.get('Verfuegbar', True))
+                if item_doc and int(item_doc.get('Exemplare', 1) or 1) > 1:
+                    total_exemplare = int(item_doc.get('Exemplare', 1) or 1)
+                    borrowed_exemplare = len(item_doc.get('ExemplareStatus') or [])
+                    available = borrowed_exemplare < total_exemplare
+
+                if item_doc:
+                    active_query = {
+                        'Status': 'active',
+                        '_id': {'$ne': appointment['_id']},
+                        '$or': [{'Item': item_id}, {'Item': str(item_id)}],
+                    }
+                    total_exemplare = int(item_doc.get('Exemplare', 1) or 1)
+                    active_count = ausleihungen.count_documents(active_query)
+                    available = available and active_count < total_exemplare
+
+                if not available:
+                    holder = ''
+                    if item_doc and item_doc.get('User'):
+                        try:
+                            holder = decrypt_text(str(item_doc['User']))
+                        except Exception:
+                            holder = str(item_doc['User'])
+                    if not holder:
+                        active_holder = ausleihungen.find_one(
+                            {
+                                'Status': 'active',
+                                '$or': [{'Item': item_id}, {'Item': str(item_id)}],
+                                '_id': {'$ne': appointment['_id']},
+                            },
+                            {'User': 1},
+                        )
+                        if active_holder and active_holder.get('User'):
+                            try:
+                                holder = decrypt_text(str(active_holder['User']))
+                            except Exception:
+                                holder = str(active_holder['User'])
+                    requested_user = str(appointment.get('User') or '').strip()
+                    try:
+                        requested_user = decrypt_text(requested_user) if requested_user else ''
+                    except Exception:
+                        pass
+                    item_name = (item_doc or {}).get('Name') or str(item_id)
+                    conflict_fields = {
+                        'ConflictDetected': True,
+                        'ConflictNote': f'Keine Verfügbarkeit für "{item_name}" zum Startzeitpunkt.',
+                        'ConflictAt': current_time,
+                        'WaitingForAvailability': True,
+                    }
+                    ausleihungen.update_one(
+                        {'_id': appointment['_id'], 'Status': 'planned'},
+                        {'$set': {**conflict_fields, 'LastUpdated': current_time}}
+                    )
+                    if requested_user:
+                        _create_notification(
+                            db,
+                            audience='user',
+                            notif_type='borrowing_waiting_for_availability',
+                            title='Ausleihe wartet auf Verfügbarkeit',
+                            message=f'"{item_name}" ist zum geplanten Start noch ausgeliehen. Deine Reservierung bleibt aktiv und wird automatisch gestartet, sobald es zurückgegeben wurde.',
+                            target_user=requested_user,
+                            reference={'borrow_id': str(appointment['_id']), 'item_id': str(item_id)},
+                            unique_key=f'borrowing:waiting:{appointment["_id"]}:requester',
+                            severity='warning',
+                        )
+                    if holder and holder != requested_user:
+                        _create_notification(
+                            db,
+                            audience='user',
+                            notif_type='borrowing_blocking_return',
+                            title='Rückgabe benötigt',
+                            message=f'"{item_name}" wird für eine geplante Ausleihe benötigt. Bitte gib den Gegenstand zurück und bestätige die Rückgabe.',
+                            target_user=holder,
+                            reference={'borrow_id': str(appointment['_id']), 'item_id': str(item_id)},
+                            unique_key=f'borrowing:waiting:{appointment["_id"]}:holder',
+                            severity='warning',
+                        )
+                    continue
+
             # Wenn sich der Status geändert hat, aktualisiere in der Datenbank
             if new_status != old_status and not item_is_library:
                 extra_fields = {}
@@ -1477,32 +1583,48 @@ def update_appointment_statuses():
                             except Exception as e:
                                 app.logger.warning(f"Could not update item status to True for {appointment['_id']}: {e}")
 
-                if old_status == 'planned' and new_status == 'active' and activation_user:
-                    try:
-                        _create_notification(
-                            db,
-                            audience='user',
-                            notif_type='appointment_activated',
-                            title='Reservierung ist jetzt aktiv',
-                            message=f"Deine geplante Ausleihe für {activation_item_name} startet jetzt.",
-                            target_user=activation_user,
-                            reference={
-                                'appointment_id': str(appointment.get('_id')),
-                                'item_id': str(appointment.get('Item') or ''),
-                                'event': 'activated',
-                            },
-                            unique_key=f"appointment:activated:{appointment.get('_id')}",
-                            severity='info',
-                        )
-                    except Exception as notif_err:
-                        app.logger.warning(
-                            f"Failed to create activation notification for {appointment.get('_id')}: {notif_err}"
-                        )
+            # Endzeitpunkt erreicht: nur einen deutlich sichtbaren
+            # Rückgabehinweis setzen, niemals automatisch abschließen.
+            if (
+                old_status == 'active'
+                and isinstance(appointment.get('End'), datetime.datetime)
+                and au.ensure_timezone_aware(appointment['End']) <= current_time
+            ):
+                ausleihungen.update_one(
+                    {'_id': appointment['_id'], 'Status': 'active'},
+                    {'$set': {
+                        'ReturnPending': True,
+                        'ReturnReminderAt': current_time,
+                        'LastUpdated': current_time,
+                    }}
+                )
+
+            if old_status == 'planned' and new_status == 'active' and activation_user:
+                try:
+                    _create_notification(
+                        db,
+                        audience='user',
+                        notif_type='appointment_activated',
+                        title='Reservierung ist jetzt aktiv',
+                        message=f"Deine geplante Ausleihe für {activation_item_name} startet jetzt.",
+                        target_user=activation_user,
+                        reference={
+                            'appointment_id': str(appointment.get('_id')),
+                            'item_id': str(appointment.get('Item') or ''),
+                            'event': 'activated',
+                        },
+                        unique_key=f"appointment:activated:{appointment.get('_id')}",
+                        severity='info',
+                    )
+                except Exception as notif_err:
+                    app.logger.warning(
+                        f"Failed to create activation notification for {appointment.get('_id')}: {notif_err}"
+                    )
 
             # -----------------------------------------------------------------
             # Mahnlauf für Bibliotheksartikel (Prüfung auf Überfälligkeit)
             # -----------------------------------------------------------------
-            elif item_is_library:
+            if item_is_library:
                 appt = appointment # Verwende das aktuelle Dokument aus der Schleife
                 if appt.get('Status') != 'active':
                     continue
@@ -1560,7 +1682,7 @@ def update_appointment_statuses():
                         pass
 
                 # STUFE 2: >= 2 * student_ausleih_dauer Tage überfällig -> Ausweis sperren, Stufe 2 setzen & Admins benachrichtigen
-                if days_overdue >= (int(student_ausleih_dauer) * 2) and mahnstufe < 2:
+                if days_overdue >= (int(student_ausleih_dauer) * 2) and mahnstufe == 1 and card.get('is_blocked') is not True:
                     ausleihungen.update_one(
                         {'_id': appt['_id']},
                         {'$set': {'Mahnstufe': 2, 'LastUpdated': current_time}}
@@ -2301,7 +2423,12 @@ def _upload_student_cards_excel():
                 row_errors.append('Vorname und Nachname fehlen')
 
             if not ausweis_id and student_name:
-                ausweis_id = generate_ausweis_id(existing_ids)
+                ausweis_id = generate_ausweis_id()
+                if ausweis_id in existing_ids:
+                    row_errors.append(f'Automatisch erzeugte Ausweis-ID {ausweis_id} existiert bereits')
+                else:
+                    while ausweis_id in existing_ids:
+                        ausweis_id = generate_ausweis_id()
                 validation_warnings.append((row_number, f'Ausweis-ID wurde automatisch erzeugt: {ausweis_id}'))
                 existing_ids.add(ausweis_id.upper())
             elif ausweis_id and not rollover_mode:
@@ -3501,144 +3628,6 @@ def library_loans_admin():
         if client:
             client.close()
 
-
-def generate_test_ausleihen():
-    """
-    Generiert Testdaten für die Überprüfung der Mahnungs- und Sperrlogik.
-    Erstellt Dummy-Schülerausweise, Bibliotheks-Items und Ausleihungen mit manipulierten Daten (DueDate).
-    """
-    current_time = datetime.datetime.now(ZoneInfo("Europe/Berlin"))
-
-    try:
-        client = MongoClient(MONGODB_HOST, MONGODB_PORT)
-        db = client[MONGODB_DB]
-        ausleihungen = db['ausleihungen']
-        student_cards_col = db['student_cards']
-        items_col = db['items']
-
-        print("Generiere Testdaten für das Mahnungssystem...")
-
-        # 1. Test-Schülerausweise erstellen oder aktualisieren (upsert)
-        # Wir nutzen AusweisIds, die im System als Identifikation dienen
-        test_students = [
-            {
-                "AusweisId": "TEST-AUSWEIS-01",
-                "SchülerName": encrypt_text("Max Mustermann (Stufe 1 Test)"),
-                "Klasse": "9a",
-                "is_blocked": False
-            },
-            {
-                "AusweisId": "TEST-AUSWEIS-02",
-                "SchülerName": encrypt_text("Erika Musterfrau (Stufe 2 Test)"),
-                "Klasse": "10b",
-                "is_blocked": False
-            },
-            {
-                "AusweisId": "TEST-AUSWEIS-03",
-                "SchülerName": encrypt_text("Tom Frisch (Keine Mahnung Test)"),
-                "Klasse": "8c",
-                "is_blocked": False
-            }
-        ]
-
-        for s in test_students:
-            student_cards_col.update_one(
-                {'AusweisId': s['AusweisId']},
-                {'$set': s},
-                upsert=True
-            )
-
-        # 2. Test-Items als Bibliotheksartikel erstellen (ItemType wird gesetzt, damit it.is_library_itemgreift)
-        # Passe LIBRARY_ITEM_TYPES an deine verwendeten Typen an (hier beispielhaft 'Buch' / 'Medien')
-        item_type = LIBRARY_ITEM_TYPES[0] if 'LIBRARY_ITEM_TYPES' in globals() and LIBRARY_ITEM_TYPES else 'Buch'
-
-        item1_res = items_col.insert_one({
-            "Name": "Biologie Buch (Test Stufe 1)",
-            "ItemType": item_type,
-            "Verfuegbar": False,
-            "Exemplare": 1,
-            "Code_4": "TR-9988"
-        })
-        item2_res = items_col.insert_one({
-            "Name": "iPad Pro (Test Stufe 2)",
-            "ItemType": item_type,
-            "Verfuegbar": False,
-            "Exemplare": 1,
-            "Code_4": "TR-9988"
-        })
-        item3_res = items_col.insert_one({
-            "Name": "Taschenrechner (Test Frisch)",
-            "ItemType": item_type,
-            "Verfuegbar": False,
-            "Exemplare": 1,
-            "Code_4": "TR-9988"
-        })
-
-        # 3. Test-Ausleihungen generieren
-        # Fall 1: 15 Tage drüber, Mahnstufe 0 -> Sollte Stufe 1 triggern (>= 14 Tage)
-        due_date_stufe1 = current_time - datetime.timedelta(days=15)
-
-        # Fall 2: 29 Tage drüber, Mahnstufe 1 -> Sollte Stufe 2 triggern & Ausweis sperren (>= 28 Tage)
-        due_date_stufe2 = current_time - datetime.timedelta(days=29)
-
-        # Fall 3: 5 Tage drüber, Mahnstufe 0 -> Sollte NICHTS tun (da < 14 Tage)
-        due_date_frisch = current_time - datetime.timedelta(days=5)
-
-        # Je nachdem, ob dein System die User-Felder in Ausleihungen verschlüsselt speichert:
-        # Hier wird encrypt_text verwendet, falls die Funktion im Scope liegt.
-        user_val_1 = encrypt_text("TEST-AUSWEIS-01")
-        user_val_2 = encrypt_text("TEST-AUSWEIS-02")
-        user_val_3 = encrypt_text("TEST-AUSWEIS-03")
-
-        test_ausleihungen = [
-            {
-                "User": user_val_1,
-                "Item": str(item1_res.inserted_id),
-                "Status": "active",
-                "DueDate": due_date_stufe1,
-                "Mahnstufe": 0,
-                "LastUpdated": current_time
-            },
-            {
-                "User": user_val_2,
-                "Item": str(item2_res.inserted_id),
-                "Status": "active",
-                "DueDate": due_date_stufe2,
-                "Mahnstufe": 1,  # Hat bereits Stufe 1, wartet auf Eskalation zu Stufe 2
-                "LastUpdated": due_date_stufe2
-            },
-            {
-                "User": user_val_3,
-                "Item": str(item3_res.inserted_id),
-                "Status": "active",
-                "DueDate": due_date_frisch,
-                "Mahnstufe": 2,
-                "LastUpdated": current_time
-            }
-        ]
-
-        # In die Datenbank einfügen
-        ausleihungen.insert_many(test_ausleihungen)
-
-        print("Erfolgreich! Folgende Testdaten wurden für das Mahnungssystem in die DB geschrieben:")
-        print(f"- Fall 1 (Mahnstufe 1 Trigger): Ausweis 'TEST-AUSWEIS-01', fällig war am {due_date_stufe1.strftime('%Y-%m-%d')} (15 Tage überfällig)")
-        print(f"- Fall 2 (Mahnstufe 2 & Sperre): Ausweis 'TEST-AUSWEIS-02', fällig war am {due_date_stufe2.strftime('%Y-%m-%d')} (29 Tage überfällig)")
-        print(f"- Fall 3 (Zu früh / Ignorieren): Ausweis 'TEST-AUSWEIS-03', fällig war am {due_date_frisch.strftime('%Y-%m-%d')} (5 Tage überfällig)")
-
-    except Exception as e:
-        print(f"Fehler beim Erstellen der Testdaten: {e}")
-    finally:
-        if client:
-            client.close()
-
-@app.route('/test_mahnungen')
-def test_mahnungen():
-    # Testdaten (Mock-Daten), um alle if/else Bedingungen im HTML zu testen
-    generate_test_ausleihen()
-    create_return_reminders()
-    return redirect(url_for('mahnungen_admin'))
-
-
 @app.route('/mahnungen_admin')
 def mahnungen_admin():
     """Admin-Übersicht für überfällige Bibliotheks-Ausleihen."""
@@ -3758,8 +3747,8 @@ def mahnungen_admin():
         email_service_enabled=cfg.EMAIL_ENABLED
     )
 
-@app.route('/mahnungen_reset', methods=['POST'])
-def mahnungen_reset():
+@app.route('/mahnungen_reset/<int:days>', methods=['POST'])
+def mahnungen_reset(days):
     """Setzt die Mahnstufe einer Ausleihe zurück, verlängert die Frist und entsperrt den Schülerausweis."""
     if 'username' not in session:
         return jsonify({'success': False, 'message': 'Nicht angemeldet.'}), 401
@@ -3787,7 +3776,7 @@ def mahnungen_reset():
             return jsonify({'success': False, 'message': 'Ausleihe nicht gefunden.'}), 404
 
         current_time = datetime.datetime.now(ZoneInfo("Europe/Berlin"))
-        new_due_date = current_time + datetime.timedelta(days=14) # Frist um 14 Tage verlängern
+        new_due_date = current_time + datetime.timedelta(days=days) # Frist um die angegebene Anzahl an Tagen verlängern
 
         # 2. Mahnstufe zurücksetzen und Frist verlängern
         ausleihungen_col.update_one(
@@ -3821,7 +3810,7 @@ def mahnungen_reset():
 
         return jsonify({
             'success': True, 
-            'message': 'Mahnstufe zurückgesetzt, Frist um 14 Tage verlängert und Ausweis entsperrt.'
+            'message': f'Mahnstufe zurückgesetzt, Frist um {days} Tage verlängert und Ausweis entsperrt.'
         })
 
     except Exception as e:
@@ -4361,9 +4350,12 @@ def api_library_scan_action():
             due_date = now + datetime.timedelta(days=borrow_duration_days)
 
             it.update_item_status(item_id, False, borrower_name)
+            borrower_user = us.get_user_by_student_card(student_card_id)
+            if not borrower_user or not borrower_user.get('_id'):
+                return jsonify({'ok': False, 'message': 'Kein Benutzer für diesen Schülerausweis gefunden.'}), 404
             au.add_ausleihung(
                 item_id,
-                borrower_name,
+                str(borrower_user['_id']),
                 now,
                 end_date=due_date,
                 due_date=due_date,
@@ -4850,7 +4842,8 @@ def student_cards_admin():
                 if ausweis_id:
                     existing = student_cards.find_one({'AusweisId': ausweis_id})
                 else:
-                    ausweis_id = generate_ausweis_id()
+                    generated_ausweis_id = generate_ausweis_id()
+                    ausweis_id = generated_ausweis_id
                     existing = False
                 if not ausweis_ident:
                     ausweis_ident = ausweis_id
@@ -4890,10 +4883,10 @@ def student_cards_admin():
 
     return render_template(
         'student_cards_admin.html',
-        student_cards=all_cards,  # Hier all_cards übergeben
+        student_cards=all_cards,
         edit_mode=edit_mode,
         form_data=form_data,
-        available_classes=available_classes, # Enthält nun die lesbaren Klassen
+        available_classes=available_classes,
         config=cfg.get_school_info(),
         email_service_enabled=cfg.MODULES.is_enabled('mail')
     )
@@ -5599,6 +5592,7 @@ def login():
         if user:
             app.logger.info(f"Login success: username={encrypt_text(username)!r} tenant={current_tenant_id or 'default'} db={current_tenant_db} host={request.host} ip={encrypt_text(request.remote_addr)}")
             session['username'] = username
+            session['user_id'] = str(user.get('_id'))
             is_admin_user = bool(user.get('Admin', False))
             session['admin'] = is_admin_user
             session['is_admin'] = is_admin_user
@@ -5729,6 +5723,8 @@ def get_items():
         favorites = set(session.get('favorites', []))
 
         available_only = str(request.args.get('available_only', '')).strip().lower() in ('1', 'true', 'yes', 'on')
+        search_term = str(request.args.get('search', '')).strip()
+        search_scope = str(request.args.get('search_scope', 'all')).strip().lower()
         offset_raw = request.args.get('offset')
         limit_raw = request.args.get('limit')
         light_mode_param = str(request.args.get('light_mode', '')).strip().lower()
@@ -5764,6 +5760,42 @@ def get_items():
             'Deleted': {'$ne': True},
         }
 
+        if search_term:
+            search_pattern = re.escape(search_term[:200])
+            if search_scope in ('description', 'title_description'):
+                search_fields = ['Name', 'Beschreibung']
+            else:
+                search_fields = [
+                    'Name', 'Beschreibung', 'Code_4', 'ISBN',
+                    'Author', 'Autor',
+                ]
+
+            direct_matches = [{field: {'$regex': search_pattern, '$options': 'i'}}
+                              for field in search_fields]
+            if search_scope not in ('description', 'title_description') and search_term.isdigit():
+                direct_matches.append({'Code_4': int(search_term)})
+            grouped_parent_ids = [
+                child.get('ParentItemId')
+                for child in items_col.find(
+                    {
+                        'IsGroupedSubItem': True,
+                        'Deleted': {'$ne': True},
+                        '$or': direct_matches,
+                    },
+                    {'ParentItemId': 1},
+                )
+                if child.get('ParentItemId')
+            ]
+            if grouped_parent_ids:
+                direct_matches.append({'_id': {'$in': grouped_parent_ids}})
+
+            base_query = {
+                '$and': [
+                    base_query,
+                    {'$or': direct_matches},
+                ]
+            }
+
         total_count = items_col.count_documents(base_query)
 
         light_projection = {
@@ -5830,6 +5862,7 @@ def get_items():
                 'ParentItemId': 1,
                 'Code_4': 1,
                 'Verfuegbar': 1,
+                'User': 1,
                 'Name': 1,
             }
             # Full mode: complete child data with all details
@@ -5838,6 +5871,7 @@ def get_items():
                 'ParentItemId': 1,
                 'Code_4': 1,
                 'Verfuegbar': 1,
+                'User': 1,
                 'Name': 1,
                 'Images': 1,
                 'ThumbnailInfo': 1,
@@ -5865,13 +5899,26 @@ def get_items():
             grouped_units = [itm] + grouped_children
             available_units = []
             grouped_all_codes = []
+            grouped_unit_states = []
             for unit in grouped_units:
+                unit_id = str(unit['_id']) if not isinstance(unit['_id'], str) else unit['_id']
                 unit_code = unit.get('Code_4')
                 if unit_code is not None and str(unit_code).strip() != '':
-                    grouped_all_codes.append(str(unit_code).strip())
+                    normalized_code = str(unit_code).strip()
+                    grouped_all_codes.append(normalized_code)
+                else:
+                    normalized_code = ''
+
+                grouped_unit_states.append({
+                    'id': unit_id,
+                    'code': normalized_code,
+                    'available': bool(unit.get('Verfuegbar', True)),
+                    'borrowed_by_current_user': bool(
+                        username and str(unit.get('User') or '') == str(username)
+                    ),
+                })
 
                 if unit.get('Verfuegbar', True):
-                    unit_id = str(unit['_id']) if not isinstance(unit['_id'], str) else unit['_id']
                     code = unit.get('Code_4') or '-'
                     available_units.append({
                         'id': unit_id,
@@ -5884,6 +5931,7 @@ def get_items():
             itm['AvailableGroupedCount'] = len(available_units)
             itm['GroupedAvailableUnits'] = available_units
             itm['GroupedAllCodes'] = grouped_all_codes
+            itm['GroupedUnitStates'] = grouped_unit_states
             if grouped_count > 1:
                 itm['Verfuegbar'] = len(available_units) > 0
             if available_only and not itm.get('Verfuegbar', False):
@@ -5945,10 +5993,7 @@ 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)
+            booking_user = str(raw_booking_user)
             start_dt = booking.get('Start')
             if not start_dt:
                 continue
@@ -5994,7 +6039,7 @@ def get_bookings():
                 'userName': str(booking_user),
                 'notes': str(booking.get('Notes') or ''),
                 'period': period,
-                'isCurrentUser': str(booking_user) == username,
+                'isCurrentUser': str(booking_user) == str(current_user_id),
                 'itemBorrower': item_borrower,
             })
 
@@ -6114,7 +6159,10 @@ def api_booking_conflicts():
         current_permissions = us.get_effective_permissions(session['username'])
             
         if not current_permissions['actions'].get('can_view_logs', False):
-            query['User'] = session['username']
+            current_user = us.get_user(session['username'])
+            if not current_user or not current_user.get('_id'):
+                return jsonify({'error': 'User account could not be resolved'}), 401
+            query['User'] = str(current_user['_id'])
 
         conflicts = list(ausleihungen.find(query))
         result = []
@@ -7455,6 +7503,11 @@ def ausleihen(id):
         return redirect(url_for('login'))
     
     username = session['username']
+    current_user = us.get_user(username)
+    if not current_user or not current_user.get('_id'):
+        flash('Benutzerkonto konnte nicht eindeutig ermittelt werden.', 'error')
+        return redirect(url_for('login'))
+    effective_borrower_id = str(current_user['_id'])
     requested_return_to = (request.form.get('return_to') or '').strip().lower()
     if requested_return_to == 'library' and cfg.MODULES.is_enabled('library'):
         redirect_target = 'library_view'
@@ -7528,6 +7581,7 @@ def ausleihen(id):
                     flash('Keine Schülerin/kein Schüler mit dieser Ausweis-ID gefunden.', 'error')
                     return redirect(url_for('library_view'))
                 effective_borrower = student_user.get('Username') or student_user.get('username') or username
+                effective_borrower_id = str(student_user['_id'])
                 if borrow_duration_days is None:
                     try:
                         card_default = int(student_user.get('MaxBorrowDays', cfg.STUDENT_DEFAULT_BORROW_DAYS))
@@ -7602,7 +7656,7 @@ def ausleihen(id):
             it.update_item_status(unit_id, False, effective_borrower)
             au.add_ausleihung(
                 unit_id,
-                effective_borrower,
+                effective_borrower_id,
                 start_date,
                 end_date=end_date,
                 due_date=end_date if is_library_item else None,
@@ -7699,7 +7753,7 @@ def ausleihen(id):
         start_date = datetime.datetime.now(ZoneInfo("Europe/Berlin"))
         au.add_ausleihung(
             id,
-            effective_borrower,
+            effective_borrower_id,
             start_date,
             end_date=end_date,
             due_date=end_date if is_library_item else None,
@@ -7750,7 +7804,7 @@ def ausleihen(id):
             exemplar_id = f"{id}_{exemplar['number']}"
             au.add_ausleihung(
                 exemplar_id,
-                effective_borrower,
+                effective_borrower_id,
                 start_date,
                 end_date=end_date,
                 due_date=end_date if is_library_item else None,
@@ -7801,7 +7855,13 @@ def zurueckgeben(id):
 
     current_permissions = us.get_effective_permissions(session['username'])
         
-    if not item.get('Verfuegbar', True) and (current_permissions['actions'].get('can_manage_users', False)) or item.get('User') == username:
+    if (
+        not item.get('Verfuegbar', True)
+        and (
+            current_permissions['actions'].get('can_manage_users', False)
+            or item.get('User') == username
+        )
+    ):
         try:
             # Get ALL active borrowing records for this item and complete them
             client = MongoClient(MONGODB_HOST, MONGODB_PORT)
@@ -7810,7 +7870,7 @@ def zurueckgeben(id):
             
             # Find all active records for this item
             active_records = ausleihungen.find({
-                'Item': id,
+                '$or': [{'Item': id}, {'Item': ObjectId(id) if ObjectId.is_valid(id) else id}],
                 'Status': 'active'
             })
             
@@ -7826,6 +7886,7 @@ def zurueckgeben(id):
                     {'$set': {
                         'Status': 'completed',
                         'End': end_date,
+                        'ReturnPending': False,
                         'LastUpdated': datetime.datetime.now(ZoneInfo("Europe/Berlin"))
                     }}
                 )
@@ -7911,7 +7972,12 @@ def get_ausleihung_by_item_route(id):
 
     current_permissions = us.get_effective_permissions(session['username'])
             
-    if ausleihung and (current_permissions['actions'].get('can_manage_users')) or ausleihung.get('User') == session['username']:
+    current_user = us.get_user(session['username'])
+    current_user_id = str(current_user['_id']) if current_user and current_user.get('_id') else ''
+    if ausleihung and (
+        current_permissions['actions'].get('can_manage_users')
+        or ausleihung.get('User') == current_user_id
+    ):
         return {'ausleihung': ausleihung, 'status': 'success'}
     
     item = it.get_item(id)
@@ -8193,7 +8259,7 @@ def plan_booking():
         try:
             for _, period, period_times in requested_slots:
                 booking_id = au.add_planned_booking(
-                    item_id, session['username'], period_times['start'],
+                    item_id, session.get('user_id') or str(us.get_user(session['username'])['_id']), period_times['start'],
                     period_times['end'], notes, period=period
                 )
                 if not booking_id:
@@ -8246,7 +8312,7 @@ def process_day_bookings(item_id, booking_date, periods, notes):
         # Create the booking
         booking_id = au.add_planned_booking(
             item_id,
-            session['username'],
+            session.get('user_id') or str(us.get_user(session['username'])['_id']),
             start_time,
             end_time,
             notes,
@@ -8313,7 +8379,7 @@ def add_booking():
         # Continue with adding the booking
         booking_id = au.add_planned_booking(
             item_id=item_id,
-            user=session['username'],
+            user_id=session.get('user_id') or str(us.get_user(session['username'])['_id']),
             start_date=start_date,
             end_date=end_date,
             notes=notes,
@@ -8344,8 +8410,10 @@ def cancel_booking(id):
     current_permissions = us.get_effective_permissions(session['username'])
     
     # Check if user owns this booking
-    booking_user = au.dp.decrypt_text(booking.get('User')) if booking.get('User') else ''
-    if booking_user != session['username'] and not current_permissions['actions'].get('can_manage_users', False):
+    current_user = us.get_user(session['username'])
+    current_user_id = str(current_user['_id']) if current_user and current_user.get('_id') else ''
+    booking_user_id = str(booking.get('User') or '')
+    if booking_user_id != current_user_id and not current_permissions['actions'].get('can_manage_users', False):
                return {"success": False, "error": "Not authorized to cancel this booking"}, 403
     
     # Cancel the booking
@@ -10907,7 +10975,9 @@ def search_word(word):
             if (term_lower in text.lower()) or (term_lower in title_text.lower()):
                 _id = i.get("_id")
                 if _id is not None:
-                    id_set.add(str(_id))
+                    item_id = str(_id)
+                    parent_id = i.get('ParentItemId')
+                    id_set.add(str(parent_id or item_id))
 
         return jsonify({"success": True, "response": list(id_set)})
     except Exception as e:
@@ -11440,6 +11510,13 @@ def my_borrowed_items():
         return redirect(url_for('login', next=request.path))
 
     username = session['username']
+    current_user = us.get_user(username) or {}
+    user_ids = {
+        username,
+        str(current_user.get('_id')) if current_user.get('_id') else '',
+        str(session.get('user_id') or ''),
+    }
+    user_ids.discard('')
 
     client = MongoClient(MONGODB_HOST, MONGODB_PORT)
     db = client[MONGODB_DB]
@@ -11456,31 +11533,27 @@ def my_borrowed_items():
 
     for appointment in all_ausleihungen:
         raw_user = appointment.get('User', '')
+        user_values = {str(raw_user).strip()} if raw_user else set()
         try:
-            decrypted_user = decrypt_text(raw_user) if raw_user else ''
-        except Exception as e:
-            app.logger.error(f"Entschlüsselungsfehler: {e}")
-            decrypted_user = ''
+            if raw_user:
+                user_values.add(str(decrypt_text(raw_user)).strip())
+        except Exception:
+            pass
 
-        if decrypted_user != username:
+        if not user_values.intersection(user_ids):
             continue
 
         item_id = appointment.get('Item')
         if not item_id:
             continue
 
-        try:
-            if isinstance(item_id, str):
-                query_id = ObjectId(item_id)
-            else:
-                query_id = item_id
-
-            item_obj = items_collection.find_one({
-                '_id': query_id,
-                'Deleted': {'$ne': True}
-            })
-        except Exception:
-            item_obj = None
+        item_queries = [{'_id': item_id}]
+        if isinstance(item_id, str) and ObjectId.is_valid(item_id):
+            item_queries.insert(0, {'_id': ObjectId(item_id)})
+        item_obj = items_collection.find_one({
+            '$or': item_queries,
+            'Deleted': {'$ne': True}
+        })
 
         if item_obj:
             item_obj['_id'] = str(item_obj['_id'])
@@ -11492,14 +11565,21 @@ def my_borrowed_items():
                 'notes': appointment.get('Notes'),
                 'period': appointment.get('Period'),
                 'status': appointment.get('VerifiedStatus', appointment.get('Status')),
+                'return_pending': bool(appointment.get('ReturnPending')),
             }
 
             status = appointment.get('Status')
             if status == 'active':
                 item_obj['ActiveAppointment'] = True
+                item_obj['ReturnPending'] = bool(appointment.get('ReturnPending'))
                 if str(item_obj['_id']) not in processed_item_ids:
                     active_items.append(item_obj)
                     processed_item_ids.add(str(item_obj['_id']))
+                elif item_obj['ReturnPending']:
+                    for existing_item in active_items:
+                        if str(existing_item.get('_id')) == str(item_obj['_id']):
+                            existing_item['ReturnPending'] = True
+                            break
             elif status == 'planned':
                 planned_items.append(item_obj)
 
@@ -11510,12 +11590,14 @@ def my_borrowed_items():
 
     for item in all_borrowed_items:
         raw_item_user = item.get('User', '')
+        item_user_values = {str(raw_item_user).strip()} if raw_item_user else set()
         try:
-            dec_item_user = decrypt_text(raw_item_user) if raw_item_user else ''
+            if raw_item_user:
+                item_user_values.add(str(decrypt_text(raw_item_user)).strip())
         except Exception:
-            dec_item_user = ''
+            pass
 
-        if dec_item_user == username and str(item['_id']) not in processed_item_ids:
+        if item_user_values.intersection(user_ids) and str(item['_id']) not in processed_item_ids:
             item['_id'] = str(item['_id'])
             item['ActiveAppointment'] = True
             item['AppointmentData'] = {'status': 'active (no document)'}
@@ -12275,7 +12357,7 @@ def schedule_appointment():
             # Use add_ausleihung directly to set the correct initial status
             appointment_id = au.add_ausleihung(
                 item_id=item_id,
-                user=session['username'],
+                user_id=session.get('user_id') or str(us.get_user(session['username'])['_id']),
                 start_date=start_datetime,
                 end_date=end_datetime,
                 notes=notes,
@@ -13769,6 +13851,13 @@ def upload_csv_batch():
         "images_failed": error_count
     }), 200
 
+@app.route('/get/asv_export', methods=['GET'])
+def get_asv_export():
+    if 'username' not in session:
+            flash('Bitte melden Sie sich an.', 'error')
+            return redirect(url_for('login'))
+    return send_from_directory(app.static_folder, 'img/asv_export_invario_2026.exfj')
+
 """
 @app.route('/test_email')
 def test_email():

Web/modules/database/ausleihung.py

@@ -15,7 +15,8 @@ Hauptfunktionen:
 
 Sammlungsstruktur:
 - ausleihungen: Speichert alle Ausleihungsdatensätze mit ihrem Status
-  - Status-Werte: 'planned' (geplant), 'active' (aktiv), 'completed' (abgeschlossen), 'cancelled' (storniert)
+  - Status-Werte: 'planned' (geplant), 'active' (aktiv), 'completed' (nach bestätigter Rückgabe), 'cancelled' (storniert)
+  - Das geplante Ende beendet eine aktive Ausleihe nicht automatisch; es erzeugt einen Rückgabehinweis.
 """
 '''
    Copyright 2025-2026 AIIrondev
@@ -96,13 +97,10 @@ def get_current_status(ausleihung, log_changes=False, user=None):
             ausleihung_id = str(ausleihung.get('_id', 'unknown'))[:12]
             print(f"[DEBUG] Ausleihe {ausleihung_id} startet in {time_until_start/3600:.1f} Stunden ({start_time}), noch geplant")
         new_status = 'planned'
-    # Wenn kein Enddatum gesetzt ist oder die aktuelle Zeit vor dem Enddatum liegt,
-    # ist die Ausleihung aktiv
-    elif not end_time or current_time < end_time:
-        new_status = 'active'
-    # Wenn die aktuelle Zeit nach dem Enddatum liegt, ist die Ausleihung beendet
+    # Eine aktive Ausleihe bleibt aktiv, bis die Rückgabe ausdrücklich bestätigt
+    # wurde. Das geplante Ende löst nur einen Rückgabehinweis aus.
     else:
-        new_status = 'completed'
+        new_status = 'active'
     
     # Protokollieren Sie Statusänderungen, wenn aktiviert und eine Änderung stattgefunden hat
     if log_changes and new_status != original_status and '_id' in ausleihung:
@@ -185,13 +183,13 @@ def create_backup_database():
 
 # === AUSLEIHUNG MANAGEMENT ===
 
-def add_ausleihung(item_id, user, start_date, end_date=None, notes="", status="active", period=None, exemplar_data=None, due_date=None):
+def add_ausleihung(item_id, user_id, start_date, end_date=None, notes="", status="active", period=None, exemplar_data=None, due_date=None):
     """
     Add a new borrowing record for an item.
     
     Args:
         item_id (str): ID of the item borrowed
-        user (str): Username of the borrower
+        user_id (str): ID of the borrower
         start_date (datetime): Start date and time of the borrowing
         end_date (datetime, optional): End date and time if already returned
         notes (str, optional): Additional notes about the borrowing
@@ -209,7 +207,7 @@ def add_ausleihung(item_id, user, start_date, end_date=None, notes="", status="a
 
         ausleihung = {
             'Item': item_id,
-            'User': dp.encrypt_text(user),
+            'User': str(user_id),
             'Start': start_date,
             'Status': status
         }
@@ -256,8 +254,7 @@ def update_ausleihung(id, item_id=None, user_id=None, start=None, end=None, note
         if item_id is not None:
             update_data['Item'] = item_id
         if user_id is not None:
-            # WICHTIG: Gleiche Verschlüsselung wie in add_ausleihung nutzen!
-            update_data['User'] = dp.encrypt_text(user_id) if hasattr(dp, 'encrypt_text') else user_id
+            update_data['User'] = str(user_id)
         if start is not None:
             update_data['Start'] = ensure_timezone_aware(start)
         if end is not None:
@@ -556,9 +553,7 @@ def get_ausleihung_by_user(user_id, status=None, use_client_side_verification=Tr
             db = client[cfg.MONGODB_DB]
             ausleihungen = db['ausleihungen']
 
-            # Ensure proper encrypted query string if user IDs are encrypted in DB
-            search_user = dp.encrypt_text(user_id) if hasattr(dp, 'encrypt_text') else user_id
-            query = {'User': search_user, 'Status': {'$ne': 'deleted'}}
+            query = {'User': str(user_id), 'Status': {'$ne': 'deleted'}}
 
             if not use_client_side_verification:
                 if status is not None:
@@ -864,8 +859,8 @@ def reset_item_completely(item_id):
 
 # === KOMPATIBILITÄTSFUNKTIONEN ===
 
-def add_planned_booking(item_id, user, start_date, end_date, notes="", period=None):
-    return add_ausleihung(item_id, user, start_date, end_date, notes, status='planned', period=period)
+def add_planned_booking(item_id, user_id, start_date, end_date, notes="", period=None):
+    return add_ausleihung(item_id, user_id, start_date, end_date, notes, status='planned', period=period)
 
 
 def check_booking_conflict(item_id, start_date, end_date, period=None):

Web/static/css/styles.css

@@ -921,6 +921,42 @@ html, body {
     }
 }
 
+/* iPad layout: keep content airy while using the available tablet width. */
+@media screen and (min-width: 768px) and (max-width: 1180px) {
+    .container {
+        width: min(100% - 32px, 1120px);
+        margin: 16px auto;
+        padding: 20px;
+    }
+
+    .form-control,
+    .form-select,
+    textarea,
+    input,
+    select {
+        min-height: 44px;
+        font-size: 16px;
+    }
+
+    .btn,
+    button,
+    input[type="submit"],
+    input[type="button"] {
+        min-height: 44px;
+        touch-action: manipulation;
+    }
+
+    .table-responsive {
+        border: 1px solid var(--ui-border);
+        border-radius: var(--ui-radius);
+        -webkit-overflow-scrolling: touch;
+    }
+
+    .table-responsive > .table {
+        margin-bottom: 0;
+    }
+}
+
 /* ========================================================= */
 /* UNIVERSAL DARK MODE OVERRIDES FOR HARDCODED HTML STYLES   */
 /* ========================================================= */

Web/templates/admin_school_settings.html

@@ -78,11 +78,11 @@
                     <div class="form-row">
                         <div class="form-group">
                             <label for="filter_name_1">Name Filter 1</label>
-                            <input type="text" id="filter_name_1" name="filter_name_1" value="{{ filter_names.get('1', 'Klassenstufe') }}" placeholder="z. B. Klassenstufe">
+                            <input type="text" id="filter_name_1" name="filter_name_1" value="{{ filter_names.get('1', 'Fachgebiet') }}" placeholder="z. B. Fachgebiet">
                         </div>
                         <div class="form-group">
                             <label for="filter_name_2">Name Filter 2</label>
-                            <input type="text" id="filter_name_2" name="filter_name_2" value="{{ filter_names.get('2', 'Fach') }}" placeholder="z. B. Fach">
+                            <input type="text" id="filter_name_2" name="filter_name_2" value="{{ filter_names.get('2', 'Klassenstufe') }}" placeholder="z. B. Klassenstufe">
                         </div>
                         <div class="form-group">
                             <label for="filter_name_3">Name Filter 3</label>

Web/templates/base.html

@@ -1135,12 +1135,7 @@
                             <a class="nav-link quick-link-pill {% if current_path == url_for('terminplaner.configure') %}nav-active{% endif %}" href="{{ url_for('terminplaner.configure') }}" data-tutorial-tip="Neuen Terminplan erstellen und an Ihr Team versenden.">Neue Planung</a>
                         </li>
                         {% endif %}
-                        <li class="nav-item" data-nav-fixed="true">
-                            <button type="button" class="btn btn-link nav-link px-3" data-theme-toggle aria-label="Dark Mode umschalten" aria-pressed="false" title="Theme umschalten">
-                                <span class="theme-icon-light" style="display: none;">☀️</span>
-                                <span class="theme-icon-dark" style="display: none;">🌙</span>
-                            </button>
-                        </li>
+                        
                         <li class="nav-item dropdown ms-lg-auto">
                             <a class="nav-link dropdown-toggle" href="#" id="termMoreDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false" title="Weitere Optionen">Mehr Optionen</a>
                             <ul class="dropdown-menu dropdown-menu-end" aria-labelledby="termMoreDropdown">
@@ -1199,6 +1194,13 @@
                                     <li><hr class="dropdown-divider"></li>
                                     <li><a class="dropdown-item" href="{{ url_for('change_password') }}">Passwort ändern</a></li>
                                     <li><hr class="dropdown-divider"></li>
+                                    <li class="dropdown-item" data-nav-fixed="true">
+                                        <button type="button" class="btn btn-link nav-link px-3" data-theme-toggle aria-label="Dark Mode umschalten" aria-pressed="false" title="Theme umschalten">
+                                            <span class="theme-icon-light" style="display: none;">☀️</span>
+                                            <span class="theme-icon-dark" style="display: none;">🌙</span>
+                                        </button>
+                                    </li>
+                                    <li><hr class="dropdown-divider"></li>
                                     <li><a class="dropdown-item" href="{{ url_for('logout') }}">Logout</a></li>
                                 </ul>
                             </div>
@@ -1228,12 +1230,6 @@
                         </li>
                         {% endif %}
                         {% endif %}
-                        <li class="nav-item" data-nav-fixed="true">
-                            <button type="button" class="btn btn-link nav-link px-3" data-theme-toggle aria-label="Dark Mode umschalten" aria-pressed="false" title="Theme umschalten">
-                                <span class="theme-icon-light" style="display: none;">☀️</span>
-                                <span class="theme-icon-dark" style="display: none;">🌙</span>
-                            </button>
-                        </li>
 
                         <li class="nav-item dropdown ms-lg-auto">
                             <a class="nav-link dropdown-toggle" href="#" id="invMoreDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false" title="Weitere Optionen">
@@ -1305,8 +1301,6 @@
                                     <button class="function-search-btn" type="submit">Los</button>
                                 </form>
                             </div>
-                            {% if current_tenant_db %}
-                            <span class="navbar-text tenant-badge" title="Aktive Tenant-Datenbank">{{ current_tenant_db }}</span>
                         {% endif %}
                         <span class="navbar-text text-light me-3">{{ session['username'] }}</span>
                             <div class="dropdown me-2 user-menu-wrap">
@@ -1321,6 +1315,13 @@
                                     <li><hr class="dropdown-divider"></li>
                                     <li><a class="dropdown-item" href="{{ url_for('change_password') }}">Passwort ändern</a></li>
                                     <li><hr class="dropdown-divider"></li>
+                                    <li class="dropdown-item" data-nav-fixed="true">
+                                        <button type="button" class="btn btn-link nav-link px-3" data-theme-toggle aria-label="Dark Mode umschalten" aria-pressed="false" title="Theme umschalten">
+                                            <span class="theme-icon-light" style="display: none;">☀️</span>
+                                            <span class="theme-icon-dark" style="display: none;">🌙</span>
+                                        </button>
+                                    </li>
+                                    <li><hr class="dropdown-divider"></li>
                                     <li><a class="dropdown-item" href="{{ url_for('logout') }}">Logout</a></li>
                                 </ul>
                             </div>
@@ -1329,7 +1330,6 @@
                 </div>
             </div>
         </nav>
-    {% endif %}
 
         {% if library_module_enabled and CURRENT_MODULE == 'library' %}
         <nav class="navbar navbar-expand-lg navbar-dark" id="libraryNavbar">
@@ -1342,7 +1342,7 @@
                     <ul class="navbar-nav me-auto mb-2 mb-lg-0" id="libraryNavList">
                         {% if current_permissions.pages.get('library_view', False) %}
                         <li class="nav-item" data-nav-fixed="true">
-                            <a class="nav-link {% if current_path == url_for('library_view') %}nav-active{% endif %}" href="{{ url_for('library_view') }}" data-tutorial-tip="Die Bibliothek zeigt Ihnen alle Medien und verfügbaren Bücher.">Medien/Ausleihe</a>
+                            <a class="nav-link {% if current_path == url_for('library_view') %}nav-active{% endif %}" href="{{ url_for('library_view') }}" data-tutorial-tip="Die Bibliothek zeigt Ihnen alle Medien und verfügbaren Bücher.">Ausleihe/Rückgabe</a>
                         </li>
                         {% endif %}
                         {% if 'username' in session %}
@@ -1359,12 +1359,6 @@
                             <a class="nav-link nav-priority-link {% if current_path == url_for('library_admin') %}nav-active{% endif %}" href="{{ url_for('library_admin') }}" data-tutorial-tip="Neue Bibliotheksmedien können hier aufgenommen werden.">📖 Hochladen</a>
                         </li>
                         {% endif %}
-                        <li class="nav-item" data-nav-fixed="true">
-                            <button type="button" class="btn btn-link nav-link px-3" data-theme-toggle aria-label="Dark Mode umschalten" aria-pressed="false" title="Theme umschalten">
-                                <span class="theme-icon-light" style="display: none;">☀️</span>
-                                <span class="theme-icon-dark" style="display: none;">🌙</span>
-                            </button>
-                        </li>
 
                         <li class="nav-item dropdown ms-lg-auto">
                             <a class="nav-link dropdown-toggle" href="#" id="libMoreDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false" title="Weitere Optionen">
@@ -1431,6 +1425,13 @@
                                     <li><hr class="dropdown-divider"></li>
                                     <li><a class="dropdown-item" href="{{ url_for('change_password') }}">Passwort ändern</a></li>
                                     <li><hr class="dropdown-divider"></li>
+                                    <li class="dropdown-item" data-nav-fixed="true">
+                                        <button type="button" class="btn btn-link nav-link px-3" data-theme-toggle aria-label="Dark Mode umschalten" aria-pressed="false" title="Theme umschalten">
+                                            <span class="theme-icon-light" style="display: none;">☀️</span>
+                                            <span class="theme-icon-dark" style="display: none;">🌙</span>
+                                        </button>
+                                    </li>
+                                    <li><hr class="dropdown-divider"></li>
                                     <li><a class="dropdown-item" href="{{ url_for('logout') }}">Logout</a></li>
                                 </ul>
                             </div>

Web/templates/change_password.html

@@ -26,18 +26,27 @@
         <form method="POST" action="{{ url_for('change_password') }}">
             <div class="form-group">
                 <label for="current_password">Aktuelles Passwort:</label>
-                <input type="password" id="current_password" name="current_password" required>
+                <div class="input-group">
+                    <input type="password" class="form-control" id="current_password" name="current_password" required>
+                    <button class="btn btn-outline-secondary" type="button" onclick="togglePasswordVisibility('current_password', this)">Anzeigen</button>
+                </div>
             </div>
             
             <div class="form-group">
                 <label for="new_password">Neues Passwort:</label>
-                <input type="password" id="new_password" name="new_password" required>
+                <div class="input-group">
+                    <input type="password" class="form-control" id="new_password" name="new_password" required>
+                    <button class="btn btn-outline-secondary" type="button" onclick="togglePasswordVisibility('new_password', this)">Anzeigen</button>
+                </div>
                 <small class="form-text text-muted">Das Passwort sollte mindestens 6 Zeichen lang sein.</small>
             </div>
             
             <div class="form-group">
                 <label for="confirm_password">Neues Passwort bestätigen:</label>
-                <input type="password" id="confirm_password" name="confirm_password" required>
+                <div class="input-group">
+                    <input type="password" class="form-control" id="confirm_password" name="confirm_password" required>
+                    <button class="btn btn-outline-secondary" type="button" onclick="togglePasswordVisibility('confirm_password', this)">Anzeigen</button>
+                </div>
             </div>
             
             <div class="form-actions">
@@ -48,6 +57,20 @@
     </div>
 </div>
 
+<script>
+    function togglePasswordVisibility(fieldId, button) {
+        var passwordInput = document.getElementById(fieldId);
+
+        if (passwordInput.type === 'password') {
+            passwordInput.type = 'text';
+            button.textContent = 'Verbergen';
+        } else {
+            passwordInput.type = 'password';
+            button.textContent = 'Anzeigen';
+        }
+    }
+</script>
+
 <style>
     .password-change-form {
         max-width: 500px;
@@ -74,7 +97,7 @@
         font-weight: bold;
     }
     
-    input[type="password"] {
+    .form-control {
         width: 100%;
         padding: 10px;
         border: 1px solid #ced4da;
@@ -122,6 +145,16 @@
     .btn-secondary:hover {
         background-color: #5a6268;
     }
+
+    .btn-outline-secondary {
+        border: 1px solid #ced4da;
+        background-color: #f8f9fa;
+        color: #495057;
+    }
+
+    .btn-outline-secondary:hover {
+        background-color: #e2e6ea;
+    }
     
     .alert {
         padding: 12px;
@@ -141,4 +174,4 @@
         border: 1px solid #c3e6cb;
     }
 </style>
-{% endblock %}
+{% endblock %}

Web/templates/edit_library.html

@@ -278,8 +278,8 @@
                 <div class="multi-filter">
                     {% for idx in range(4) %}
                     <div class="form-group">
-                        <label for="filter1-{{ idx + 1 }}">Wert {{ idx + 1 }}:</label>
-                        <select id="filter1-{{ idx + 1 }}" name="filter" class="filter-dropdown-select" data-selected="{{ item.Filter[idx] if item.Filter and item.Filter|length > idx else '' }}">
+                        <label for="filter2-{{ idx + 1 }}">Wert {{ idx + 1 }}:</label>
+                        <select id="filter2-{{ idx + 1 }}" name="filter" class="filter-dropdown-select" data-selected="{{ item.Filter[idx] if item.Filter and item.Filter|length > idx else '' }}">
                             <option value="">-- Optional --</option>
                         </select>
                     </div>
@@ -290,8 +290,8 @@
                 <div class="multi-filter">
                     {% for idx in range(4) %}
                     <div class="form-group">
-                        <label for="filter2-{{ idx + 1 }}">Wert {{ idx + 1 }}:</label>
-                        <select id="filter2-{{ idx + 1 }}" name="filter2" class="filter-dropdown-select" data-selected="{{ item.Filter2[idx] if item.Filter2 and item.Filter2|length > idx else '' }}">
+                        <label for="filter1-{{ idx + 1 }}">Wert {{ idx + 1 }}:</label>
+                        <select id="filter1-{{ idx + 1 }}" name="filter2" class="filter-dropdown-select" data-selected="{{ item.Filter2[idx] if item.Filter2 and item.Filter2|length > idx else '' }}">
                             <option value="">-- Optional --</option>
                         </select>
                     </div>

Web/templates/library_table.html

@@ -133,6 +133,34 @@
         background: var(--ui-surface);
     }
 
+    /* Blue edge styling for inputs and action button */
+    #activeStudentCard,
+    #manualItemCode {
+        border: 2px solid #3b82f6 !important;
+        box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
+    }
+
+    #activeStudentCard:focus,
+    #manualItemCode:focus {
+        outline: none;
+        border-color: #2563eb !important;
+        box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.25) !important;
+    }
+
+    #manualActionBtn {
+        background: #4f46e5 !important;
+        color: white !important;
+        border: 2px solid #3b82f6 !important;
+        box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
+        transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
+    }
+
+    #manualActionBtn:hover {
+        background: #4338ca !important;
+        border-color: #2563eb !important;
+        box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
+    }
+
     .library-scan-status {
         margin-top: 10px;
         font-size: 0.92em;
@@ -605,7 +633,6 @@
         letter-spacing: 2px;
     }
 
-
     .detail-gallery-container {
         display: flex;
         flex-wrap: wrap;
@@ -676,7 +703,7 @@
         <button id="physicalScannerBtn" class="button" type="button" style="margin-left:6px;">
             Physischer Scanner starten
         </button>
-        <button id="manualActionBtn" class="button" type="button" style="margin-left:6px; background:#4f46e5; color:white;">Code verarbeiten</button>
+        <button id="manualActionBtn" class="button" type="button" style="margin-left:6px;">Code verarbeiten</button>
     </div>
     
     <div class="library-scan-reader-wrap" id="scanReaderWrap" style="display: none; margin-top: 15px;">
@@ -1392,6 +1419,7 @@
         keyboardScannerEnabled = false;
         keyboardScanBuffer = '';
         keyboardLastKeyAt = 0;
+        setActiveStudentCard('');
         document.removeEventListener('keydown', keyboardScanKeydownHandler);
         const modal = document.getElementById('physicalScannerModal');
         if (modal) modal.style.display = 'none';

Web/templates/mahnungen_admin.html

@@ -187,7 +187,11 @@
                                             {% endif %}
                                             <button type="button" class="btn btn-sm btn-outline-warning text-dark"
                                                     onclick="resetMahnung('{{ item.id }}', '{{ item.schueler_name }}')">
-                                                <i class="bi bi-arrow-counterclockwise"></i> Zurücksetzen
+                                                <i class="bi bi-arrow-counterclockwise"></i> Zurücksetzen (14 Tage)
+                                            </button>
+                                            <button type="button" class="btn btn-sm btn-outline-warning text-dark"
+                                                    onclick="resetMahnungCustom('{{ item.id }}', '{{ item.schueler_name }}')">
+                                                <i class="bi bi-arrow-counterclockwise"></i> Zurücksetzen mit eigener Frist
                                             </button>
                                         </div>
                                     </td>
@@ -210,7 +214,7 @@
 
 <!-- E-Mail Modal -->
 <div class="modal fade" id="emailModal" tabindex="-1" aria-labelledby="emailModalLabel" aria-hidden="true">
-    <div class="modal-dialog">
+    <div class="modal-dialog modal-dialog-centered">
         <div class="modal-content">
             <div class="modal-header">
                 <h5 class="modal-title" id="emailModalLabel">Mahnungs-E-Mail senden</h5>
@@ -228,7 +232,7 @@
                         <input type="email" class="form-control" id="modalEmail" placeholder="E-Mail-Adresse eingeben...">
                     </div>
                     <div class="mb-3">
-                        <label for="modalMessage" class="form-label">Nachricht</label>
+                        <label for="modalMessage" class="form-label">Nachrichten-Text</label>
                         <textarea class="form-control" id="modalMessage" rows="4" placeholder="Optionaler Text..."></textarea>
                     </div>
                 </form>
@@ -241,6 +245,31 @@
     </div>
 </div>
 
+<!-- Custom Reset Days Modal -->
+<div class="modal fade" id="customResetModal" tabindex="-1" aria-labelledby="customResetModalLabel" aria-hidden="true">
+    <div class="modal-dialog modal-dialog-centered">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="customResetModalLabel">Mahnung zurücksetzen</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Schließen"></button>
+            </div>
+            <div class="modal-body">
+                <input type="hidden" id="resetModalLoanId">
+                <p>Möchten Sie die Mahnung für <strong id="resetModalStudentName"></strong> wirklich zurücksetzen?</p>
+                <p class="text-muted small">Dadurch wird die Mahnstufe auf 0 gesetzt und der Schülerausweis entsperrt.</p>
+                <div class="mb-3">
+                    <label for="resetModalDays" class="form-label">Frist verlängern um (Tage):</label>
+                    <input type="number" class="form-control" id="resetModalDays" value="14" min="1">
+                </div>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Abbrechen</button>
+                <button type="button" class="btn btn-warning" onclick="submitCustomReset()">Mahnung zurücksetzen</button>
+            </div>
+        </div>
+    </div>
+</div>
+
 <script>
 function openEmailModal(loanId, studentName, studentEmail) {
     document.getElementById('modalLoanId').value = loanId;
@@ -292,7 +321,7 @@ function resetMahnung(loanId, studentName) {
 
     const csrfToken = document.querySelector('meta[name="csrf-token"]')?.content || '';
 
-    fetch('/mahnungen_reset', {
+    fetch('/mahnungen_reset/14', {
         method: 'POST',
         headers: { 'Content-Type': 'application/json', 'X-CSRFToken': csrfToken },
         body: JSON.stringify({ loan_id: loanId })
@@ -301,7 +330,46 @@ function resetMahnung(loanId, studentName) {
     .then(data => {
         if (data.success) {
             alert(data.message);
-            location.reload(); // Seite neu laden, um die aktualisierte Ansicht zu sehen
+            location.reload();
+        } else {
+            alert('Fehler: ' + data.message);
+        }
+    })
+    .catch(error => {
+        alert('Fehler beim Senden der Anfrage.');
+        console.error(error);
+    });
+}
+
+function resetMahnungCustom(loanId, studentName) {
+    document.getElementById('resetModalLoanId').value = loanId;
+    document.getElementById('resetModalStudentName').textContent = studentName;
+    document.getElementById('resetModalDays').value = 14;
+
+    var customModal = new bootstrap.Modal(document.getElementById('customResetModal'));
+    customModal.show();
+}
+
+function submitCustomReset() {
+    const loanId = document.getElementById('resetModalLoanId').value;
+    const daysToExtend = parseInt(document.getElementById('resetModalDays').value, 10);
+    const csrfToken = document.querySelector('meta[name="csrf-token"]')?.content || '';
+
+    if (isNaN(daysToExtend) || daysToExtend < 1) {
+        alert('Bitte geben Sie eine gültige Anzahl an Tagen ein.');
+        return;
+    }
+
+    fetch(`/mahnungen_reset/${daysToExtend}`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json', 'X-CSRFToken': csrfToken },
+        body: JSON.stringify({ loan_id: loanId })
+    })
+    .then(response => response.json())
+    .then(data => {
+        if (data.success) {
+            alert(data.message);
+            location.reload();
         } else {
             alert('Fehler: ' + data.message);
         }

Web/templates/main_admin.html

@@ -562,25 +562,30 @@
        align-items: center;
     }
    
-    .navigation-buttons {
-        display: flex;
-        justify-content: center;
-        gap: 10px;
+    .items-navigation {
+        display: grid;
+        grid-template-columns: 44px minmax(0, 1fr) 44px;
+        align-items: center;
+        column-gap: 18px;
         margin-top: 20px;
     }
 
-    .navigation-buttons .prev-button,
-    .navigation-buttons .next-button {
+    .navigation-button-slot {
+        display: flex;
+        justify-content: center;
+    }
+
+    .navigation-button {
         background-color: #007bff;
         color: #fff;
         border: none;
         cursor: pointer;
         padding: 10px;
         border-radius: 5px;
+        z-index: 1;
     }
 
-    .navigation-buttons .prev-button:hover,
-    .navigation-buttons .next-button:hover {
+    .navigation-button:hover {
         background-color: #0056b3;
     }
 
@@ -1633,7 +1638,11 @@
         }
         
         /* Navigation buttons mobile */
-        .navigation-buttons {
+        .items-navigation {
+            display: block !important;
+        }
+
+        .navigation-button-slot {
             display: none !important; /* Hide horizontal navigation on mobile */
         }
         
@@ -1946,7 +1955,7 @@
     /* Standardized button styles across the application */
     .search-button, .scan-button, .filter-toggle, .clear-filter, 
     .add-new-btn, .popup-close-button, .prev-image-button, .next-image-button,
-    .navigation-buttons .prev-button, .navigation-buttons .next-button {
+    .navigation-button {
         display: inline-flex;
         align-items: center;
         justify-content: center;
@@ -1971,6 +1980,122 @@
         box-sizing: border-box;
         white-space: nowrap;
     }
+
+    /* iPad: use the wider canvas for cards, filters, forms, and image previews. */
+    @media screen and (min-width: 768px) and (max-width: 1180px) {
+        .admin-content-container {
+            width: min(100%, 1120px) !important;
+            max-width: 1120px !important;
+            margin: 0 auto !important;
+            padding: 20px 24px 28px !important;
+            box-sizing: border-box !important;
+        }
+
+        .filter-container {
+            display: grid !important;
+            grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
+            align-items: start;
+            gap: 14px !important;
+        }
+
+        .filter-group {
+            min-width: 0 !important;
+            width: auto !important;
+            padding: 14px !important;
+        }
+
+        .filter-group.search-field {
+            grid-column: span 2;
+        }
+
+        .search-container {
+            gap: 8px;
+        }
+
+        .search-container input,
+        .form-group input,
+        .form-group select,
+        .form-group textarea {
+            min-height: 44px;
+            font-size: 16px;
+        }
+
+        .items-container {
+            display: grid !important;
+            grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
+            gap: 18px !important;
+            padding: 14px 0 24px !important;
+            overflow: visible !important;
+            scroll-snap-type: none !important;
+        }
+
+        .item-card {
+            width: auto !important;
+            max-width: none !important;
+            min-width: 0 !important;
+            padding: 16px !important;
+            scroll-snap-align: none !important;
+        }
+
+        .item-card .image-container {
+            width: 100% !important;
+            max-width: none !important;
+            height: auto !important;
+            aspect-ratio: 4 / 3;
+            margin: 10px 0 14px !important;
+            overflow: hidden !important;
+            border: 1px solid var(--ui-border);
+            border-radius: 12px !important;
+            background: var(--ui-surface-soft);
+        }
+
+        .item-card .image-container .item-image,
+        .item-card .image-container .video-container {
+            width: 100% !important;
+            height: 100% !important;
+        }
+
+        .item-card .image-container .item-image {
+            object-fit: contain !important;
+            object-position: center;
+            background: var(--ui-surface-soft);
+        }
+
+        .item-card .image-container .item-image[data-index="0"] {
+            display: block !important;
+            position: relative !important;
+            opacity: 1 !important;
+        }
+
+        .item-card .image-container .item-image:not([data-index="0"]) {
+            display: none !important;
+        }
+
+        .item-card .image-container .video-container {
+            position: relative;
+            display: block !important;
+        }
+
+        .form-row {
+            display: grid;
+            grid-template-columns: repeat(2, minmax(0, 1fr));
+            gap: 16px;
+        }
+
+        .form-actions {
+            flex-wrap: wrap;
+            gap: 12px;
+        }
+
+        .form-actions > * {
+            min-height: 44px;
+        }
+
+        #item-modal .modal-content {
+            width: min(92vw, 880px);
+        }
+    }
+
 </style>
 <style>
     .bookmark-btn { position:absolute; top:8px; right:8px; width:46px; height:46px; background:rgba(255,255,255,.92); border:2px solid #ffc107; border-radius:50%; font-size:1.65rem; line-height:1; display:flex; align-items:center; justify-content:center; cursor:pointer; color:#ffc107; box-shadow:0 2px 6px rgba(0,0,0,.18); transition:background .2s, transform .15s, color .2s; z-index:6; pointer-events:auto; }
@@ -2343,7 +2468,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
         <div class="filter-container">
             <div class="filter-group">
                 <div class="filter-header">
-                    <label>{{ filter_names.get('2', 'Fach') }}</label>
+                    <label>{{ filter_names.get('1', 'Fach') }}</label>
                     <button type="button" class="filter-toggle" onclick="toggleFilterDropdown('filter1-dropdown')">▼</button>
                     <button type="button" class="clear-filter" onclick="clearFilter(1)">Clear</button>
                 </div>
@@ -2357,7 +2482,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
             
             <div class="filter-group">
                 <div class="filter-header">
-                    <label>{{ filter_names.get('1', 'Klassenstufe') }}</label>
+                    <label>{{ filter_names.get('2', 'Klassenstufe') }}</label>
                     <button type="button" class="filter-toggle" onclick="toggleFilterDropdown('filter2-dropdown')">▼</button>
                     <button type="button" class="clear-filter" onclick="clearFilter(2)">Clear</button>
                 </div>
@@ -2427,12 +2552,16 @@ document.addEventListener('DOMContentLoaded', ()=>{
             <span>Anzahl</span>
         </div>
 
-        <div id="items-container" class="items-container">
-            <!-- Items will be dynamically loaded here -->
-        </div>
-        <div class="navigation-buttons">
-            <button class="prev-button" onclick="scrollPrev()">&#10094;</button>
-            <button class="next-button" onclick="scrollNext()">&#10095;</button>
+        <div class="items-navigation">
+            <div class="navigation-button-slot">
+                <button class="navigation-button prev-button" type="button" onclick="scrollPrev()" aria-label="Vorherige Elemente">&#10094;</button>
+            </div>
+            <div id="items-container" class="items-container">
+                <!-- Items will be dynamically loaded here -->
+            </div>
+            <div class="navigation-button-slot">
+                <button class="navigation-button next-button" type="button" onclick="scrollNext()" aria-label="Nächste Elemente">&#10095;</button>
+            </div>
         </div>
     </div>
     <div id="item-modal" class="item-modal">
@@ -3206,9 +3335,12 @@ document.addEventListener('DOMContentLoaded', ()=>{
         });
     }
 
-    function loadItems(offset = 0, append = false) {
+    function loadItems(offset = 0, append = false, searchTerm = '', searchScope = 'all') {
         // Keep list payload lightweight; full details are fetched on-demand in openItemQuick.
-        return fetch(`{{ url_for('get_items') }}?offset=${offset}&limit=${MAIN_ADMIN_ITEMS_PAGE_SIZE}&light_mode=true`)
+        const searchParams = searchTerm
+            ? `&search=${encodeURIComponent(searchTerm)}&search_scope=${encodeURIComponent(searchScope)}`
+            : '';
+        return fetch(`{{ url_for('get_items') }}?offset=${offset}&limit=${MAIN_ADMIN_ITEMS_PAGE_SIZE}&light_mode=true${searchParams}`)
             .then(response => response.json())
             .then(data => {
                 const itemsContainer = document.querySelector('#items-container');
@@ -3241,7 +3373,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
                 }
                 pageItems.sort((a, b) => {
                     const nameA = a.Name ? a.Name.toLowerCase() : '';
-                    const nameB = a.Name ? a.Name.toLowerCase() : '';
+                    const nameB = b.Name ? b.Name.toLowerCase() : '';
                     return nameA.localeCompare(nameB);
                 });
 
@@ -3285,6 +3417,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
                         card.dataset.code = (item.Code_4 !== undefined && item.Code_4 !== null) ? 
                           String(item.Code_4).trim() : '';
                         card.dataset.groupCodes = JSON.stringify(Array.isArray(item.GroupedAllCodes) ? item.GroupedAllCodes : []);
+                                                card.dataset.groupedUnits = JSON.stringify(Array.isArray(item.GroupedUnitStates) ? item.GroupedUnitStates : []);
         
                         // Add filter values to their respective sets
                         filter1Array.forEach(value => {
@@ -3415,7 +3548,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
                                 </div>
                                 {% if current_permissions.actions.get('can_borrow', False) %}
                                 ${isAvailableForBorrow && !item.BlockedNow ? 
-                                    `<form method="POST" action="{{ url_for('ausleihen', id='') }}${item._id}">
+                                    `<form method="POST" action="{{ url_for('ausleihen', id='') }}${item._id}" data-grouped-borrow-form>
                                         ${isGroupedItem ? `
                                         <div class="grouped-borrow-controls" style="display:flex; gap:8px; flex-wrap:wrap; margin-bottom:8px; align-items:center;">
     <label style="font-size:0.85rem; margin:0;">Anzahl:</label>
@@ -3445,6 +3578,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
                                 :
                                     `<button class="ausleihen disabled-button" disabled>${item.BlockedNow ? 'Reserviert' : 'Ausgeliehen'}</button>`
                                 }
+                                ${isGroupedItem ? '<div class="grouped-searched-action" data-grouped-searched-action style="display:none;"></div>' : ''}
                                 {% endif %}
                                 {% if current_permissions.actions.get('can_delete', False) %}
                                 <form method="POST" action="{{ url_for('delete_item', id='') }}${item._id}" style="display:inline;" onsubmit="return confirm('Sind Sie sicher, dass Sie dieses Objekt löschen möchten?')">
@@ -3679,13 +3813,66 @@ document.addEventListener('DOMContentLoaded', ()=>{
             card.classList.remove('highlight-item', 'code-match', 'exact-code-match');
         });
         
-        applyFilters(true);
+        if (codeSearchTerm) {
+            loadItems(0, false, codeSearchTerm, 'all');
+        } else {
+            loadItems();
+        }
         
         setTimeout(() => {
             searchInput.classList.remove('searching');
         }, 500);
     }
 
+    function syncSearchedGroupedAction(card, searchTerm, exactCodeMatch) {
+        const searchedAction = card.querySelector('[data-grouped-searched-action]');
+        if (!searchedAction) return;
+
+        const borrowForm = card.querySelector('[data-grouped-borrow-form]');
+        searchedAction.style.display = 'none';
+        searchedAction.innerHTML = '';
+
+        if (!exactCodeMatch || !searchTerm) {
+            if (borrowForm) borrowForm.style.display = '';
+            return;
+        }
+
+        let groupedUnits = [];
+        try {
+            groupedUnits = JSON.parse(card.dataset.groupedUnits || '[]');
+        } catch {
+            groupedUnits = [];
+        }
+
+        const matchedUnit = groupedUnits.find(unit =>
+            String(unit.code || '').trim().toLowerCase() === searchTerm
+        );
+        if (!matchedUnit) return;
+
+        if (matchedUnit.available) {
+            if (borrowForm) borrowForm.style.display = '';
+            const specificSelect = borrowForm?.querySelector('[name="specific_item_id"]');
+            if (specificSelect) {
+                specificSelect.value = matchedUnit.id;
+            }
+            return;
+        }
+
+        if (borrowForm) borrowForm.style.display = 'none';
+        searchedAction.style.display = 'block';
+        if (matchedUnit.borrowed_by_current_user) {
+            searchedAction.innerHTML = `
+                <form method="POST" action="/zurueckgeben/${encodeURIComponent(matchedUnit.id)}">
+                    <button class="ausleihen" type="submit">Zurückgeben (${escapeHtml(matchedUnit.code || 'Code')})</button>
+                </form>`;
+        } else {
+            searchedAction.innerHTML = `
+                <button class="ausleihen disabled-button" type="button" disabled>
+                    ${escapeHtml(matchedUnit.code || 'Code')} ausgeliehen
+                </button>`;
+        }
+    }
+
     function applyFilters(isDirectSearch = false) {
         const itemsContainer = document.querySelector('#items-container');
         const items = itemsContainer.querySelectorAll('.item-card');
@@ -3732,6 +3919,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
             if (passesAllFilters && matchesCodeSearch && matchesDesc && (!favoritesOnly || isFavoriteCard)) {
                 item.style.display = 'block';
                 visibleCount++;
+                syncSearchedGroupedAction(item, searchTerm, exactCodeMatch);
                 
                 if (exactCodeMatch) {
                     item.classList.add('highlight-item', 'exact-code-match');
@@ -3756,6 +3944,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
                 }
             } else {
                 item.style.display = 'none';
+                syncSearchedGroupedAction(item, '', false);
             }
         });
 
@@ -3830,7 +4019,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
             card.classList.remove('highlight-item', 'code-match', 'exact-code-match');
         });
         
-        applyFilters();
+        loadItems();
     }
 
     // Description search using backend substring match
@@ -3839,21 +4028,12 @@ document.addEventListener('DOMContentLoaded', ()=>{
         const term = (input?.value || '').trim();
         if (!term){
             descSearchIds = null;
-            applyFilters(true);
+            loadItems(0, false, codeSearchTerm, 'all');
             return;
         }
         input?.classList.add('searching');
-        fetch(`/search_word/${encodeURIComponent(term)}`)
-            .then(r=>r.json())
-            .then(data=>{
-                if (data && data.success && Array.isArray(data.response)){
-                    descSearchIds = new Set(data.response.map(String));
-                } else {
-                    descSearchIds = new Set();
-                }
-                applyFilters(true);
-            })
-            .catch(()=>{ descSearchIds = new Set(); applyFilters(true); })
+        descSearchIds = null;
+        loadItems(0, false, term, 'title_description')
             .finally(()=>{ setTimeout(()=> input?.classList.remove('searching'), 300); });
     }
 
@@ -3861,7 +4041,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
         const input = document.getElementById('desc-search');
         if (input) input.value = '';
         descSearchIds = null;
-        applyFilters();
+        loadItems(0, false, codeSearchTerm, 'all');
     }
 
     // Open item modal with fresh details from backend.
@@ -4112,17 +4292,17 @@ document.addEventListener('DOMContentLoaded', ()=>{
                 </div>
 
                 <div class="detail-group">
-                    <div class="detail-label">Unterrichtsfach:</div>
+                    <div class="detail-label">{{ filter_names.get('1', 'Unterrichtsfach') }}:</div>
                     <div class="detail-value">${escapeHtml(filter1Array.join(', ') || '-')}</div>
                 </div>
 
                 <div class="detail-group">
-                    <div class="detail-label">Jahrgangsstufe:</div>
+                    <div class="detail-label">{{ filter_names.get('2', 'Jahrgangsstufe') }}:</div>
                     <div class="detail-value">${escapeHtml(filter2Array.join(', ') || '-')}</div>
                 </div>
 
                 <div class="detail-group">
-                    <div class="detail-label">Schlagwort:</div>
+                    <div class="detail-label">{{ filter_names.get('3', 'Schlagwort') }}:</div>
                     <div class="detail-value">${escapeHtml(filter3Array.join(', ') || '-')}</div>
                 </div>
 

Web/templates/manage_filters.html

@@ -21,9 +21,8 @@
             <div class="card shadow-sm border-0 h-100 rounded-3">
                 <div class="card-header bg-white border-bottom py-3 d-flex justify-content-between align-items-center">
                     <h2 class="card-title h5 mb-0 fw-semibold text-primary">
-                        <i class="bi bi-funnel me-2"></i>{{ filter_names.get('1', 'Jahrgangsstufe') }}
+                        <i class="bi bi-funnel me-2"></i>{{ filter_names.get('2', 'Jahrgangsstufe') }}
                     </h2>
-                    <span class="badge bg-primary-subtle text-primary rounded-pill">Filter 1</span>
                 </div>
                 <div class="card-body p-4">
                     <form method="POST" action="{{ url_for('add_filter_value', filter_num=1) }}" class="mb-4">
@@ -87,9 +86,8 @@
             <div class="card shadow-sm border-0 h-100 rounded-3">
                 <div class="card-header bg-white border-bottom py-3 d-flex justify-content-between align-items-center">
                     <h2 class="card-title h5 mb-0 fw-semibold text-primary">
-                        <i class="bi bi-funnel me-2"></i>{{ filter_names.get('2', 'Fachgebiet') }}
+                        <i class="bi bi-funnel me-2"></i>{{ filter_names.get('1', 'Fachgebiet') }}
                     </h2>
-                    <span class="badge bg-primary-subtle text-primary rounded-pill">Filter 2</span>
                 </div>
                 <div class="card-body p-4">
                     <form method="POST" action="{{ url_for('add_filter_value', filter_num=2) }}" class="mb-4">

Web/templates/my_borrowed_items.html

@@ -142,6 +142,9 @@
                     {% if item.ActiveAppointment %}
                     <span class="appointment-status status-active">Aktiv</span>
                     {% endif %}
+                    {% if item.ReturnPending %}
+                    <span class="return-due-badge">RÜCKGABE ERFORDERLICH</span>
+                    {% endif %}
                 </div>
                 
                 <div class="item-details">
@@ -202,7 +205,9 @@
                     <div class="action-buttons-container">
                         <form method="POST" action="{{ url_for('zurueckgeben', id=item._id) }}">
                             <input type="hidden" name="source_page" value="my_borrowed_items">
-                            <button class="return-button" type="submit">Zurückgeben</button>
+                            <button class="return-button{% if item.ReturnPending %} return-button-due{% endif %}" type="submit">
+                                {% if item.ReturnPending %}Rückgabe bestätigen{% else %}Zurückgeben{% endif %}
+                            </button>
                         </form>
                         <form method="POST" action="{{ url_for('cancel_ausleihung_route', id=item.AppointmentData.id) }}" onsubmit="return confirm('Möchten Sie diese aktive Ausleihung wirklich stornieren?');">
                             <button class="cancel-button" type="submit">Stornieren</button>
@@ -497,6 +502,30 @@ document.addEventListener('DOMContentLoaded', function() {
     .return-button:hover {
         background-color: #0069d9;
     }
+
+    .return-due-badge {
+        background-color: #dc3545;
+        color: #fff;
+        padding: 4px 9px;
+        border-radius: 12px;
+        font-size: 0.75rem;
+        font-weight: 800;
+        margin-left: 10px;
+    }
+
+    .return-button-due {
+        background-color: #dc3545;
+        animation: return-due-pulse 1.8s ease-in-out infinite;
+    }
+
+    .return-button-due:hover {
+        background-color: #b02a37;
+    }
+
+    @keyframes return-due-pulse {
+        0%, 100% { box-shadow: 0 0 0 0 rgba(220, 53, 69, 0.45); }
+        50% { box-shadow: 0 0 0 7px rgba(220, 53, 69, 0); }
+    }
     
     .return-count-group {
         display: flex;

Web/templates/student_cards_admin.html

@@ -514,6 +514,7 @@
                 <p style="margin:0 0 12px 0; color:#555; font-size:13px; line-height:1.4;">
                     Laden Sie eine <strong>.xlsx</strong>- oder <strong>.csv</strong>-Datei hoch (z. B. aus <strong>ASV</strong>). Erkannt werden Rufame, Nachname, Klasse*, Ausweis-ID*, lokales Differenzierungsmerkmal*, Notizen* & Ausleihdauer*.
                     Hinweis: Die Daten werden Validiert und müssen dann noch einmal aus sicherheits gründen hochgeladen werden!
+                    Im folgenden ist eine export vorlage für ihre ASV-Software hinterlegt: <a href="{{ url_for('get_asv_export') }}" target="_blank" style="color:#007bff; text-decoration:underline;">ASV Export Vorlage</a>
                 </p>
             </div>
 

Web/templates/upload_admin.html

@@ -865,38 +865,6 @@
             <!-- Normal Item Mode: Standard Filters -->
             <div class="filter-inputs">
                 <h3>{{ filter_names.get('1', 'Jahrgangsstufe') }}</h3>
-                <div class="multi-filter">
-                    <div class="form-group">
-                        <label for="filter1-1">Wert 1:</label>
-                        <select id="filter1-1" name="filter" class="filter-dropdown-select" required>
-                            <option value="">-- Bitte auswählen --</option>
-                            <!-- Options will be loaded by JavaScript -->
-                        </select>
-                    </div>
-                    <div class="form-group">
-                        <label for="filter1-2">Wert 2:</label>
-                        <select id="filter1-2" name="filter" class="filter-dropdown-select">
-                            <option value="">-- Optional --</option>
-                            <!-- Options will be loaded by JavaScript -->
-                        </select>
-                    </div>
-                    <div class="form-group">
-                        <label for="filter1-3">Wert 3:</label>
-                        <select id="filter1-3" name="filter" class="filter-dropdown-select">
-                            <option value="">-- Optional --</option>
-                            <!-- Options will be loaded by JavaScript -->
-                        </select>
-                    </div>
-                    <div class="form-group">
-                        <label for="filter1-4">Wert 4:</label>
-                        <select id="filter1-4" name="filter" class="filter-dropdown-select">
-                            <option value="">-- Optional --</option>
-                            <!-- Options will be loaded by JavaScript -->
-                        </select>
-                    </div>
-                </div>
-                
-                <h3>{{ filter_names.get('2', 'Fachgebiet') }}</h3>
                 <div class="multi-filter">
                     <div class="form-group">
                         <label for="filter2-1">Wert 1:</label>
@@ -928,6 +896,38 @@
                     </div>
                 </div>
                 
+                <h3>{{ filter_names.get('2', 'Fachgebiet') }}</h3>
+                <div class="multi-filter">
+                    <div class="form-group">
+                        <label for="filter1-1">Wert 1:</label>
+                        <select id="filter1-1" name="filter" class="filter-dropdown-select" required>
+                            <option value="">-- Bitte auswählen --</option>
+                            <!-- Options will be loaded by JavaScript -->
+                        </select>
+                    </div>
+                    <div class="form-group">
+                        <label for="filter1-2">Wert 2:</label>
+                        <select id="filter1-2" name="filter" class="filter-dropdown-select">
+                            <option value="">-- Optional --</option>
+                            <!-- Options will be loaded by JavaScript -->
+                        </select>
+                    </div>
+                    <div class="form-group">
+                        <label for="filter1-3">Wert 3:</label>
+                        <select id="filter1-3" name="filter" class="filter-dropdown-select">
+                            <option value="">-- Optional --</option>
+                            <!-- Options will be loaded by JavaScript -->
+                        </select>
+                    </div>
+                    <div class="form-group">
+                        <label for="filter1-4">Wert 4:</label>
+                        <select id="filter1-4" name="filter" class="filter-dropdown-select">
+                            <option value="">-- Optional --</option>
+                            <!-- Options will be loaded by JavaScript -->
+                        </select>
+                    </div>
+                </div>
+                
                 <h3>{{ filter_names.get('3', 'Schlagwort') }}</h3>
                 <div class="multi-filter">
                     <div class="form-group">