Fix ruff lint violations

src/ccma/ui/member_tab.py

@@ -8,17 +8,16 @@ from tkinter import messagebox, ttk
 
 from ccma.domain.contributions import CLAIM_STATUS_LABELS, claim_status, claim_total, money_text
 from ccma.domain.dates import age_label, date_input_hint, format_date_for_display
-from ccma.domain.models import ASSET_STATUS_LABELS, MEMBERSHIP_STATUS_LABELS as STATUS_LABELS
-from ccma.domain.models import Event
+from ccma.domain.models import ASSET_STATUS_LABELS, Event
+from ccma.domain.models import MEMBERSHIP_STATUS_LABELS as STATUS_LABELS
 from ccma.storage.repository import MemberRepository, RepositoryError
-from ccma.ui.document_dialog import DocumentTemplateDialog
 from ccma.ui.dialogs import IntegrityWarningDialog
+from ccma.ui.document_dialog import DocumentTemplateDialog
 from ccma.ui.file_open import open_path
 from ccma.ui.labels import display_label, storage_key
 from ccma.ui.messages import MessageAction, MessageBannerList, TabMessage
 from ccma.ui.scrolling import ScrollableFrame
 
-
 CLAIM_TABLE_COLUMNS = (
     ("title", "Forderung", 220),
     ("due", "Fällig", 100),
@@ -287,8 +286,12 @@ class MemberTab(ttk.Frame):
         ttk.Button(asset_actions, text="Asset öffnen", command=self._open_selected_asset).pack(
             side="left", padx=(0, 8)
         )
-        ttk.Button(asset_actions, text="Ausgewähltes Asset zurücknehmen", command=self._return_selected_asset).pack(
-            side="left"
+        ttk.Button(
+            asset_actions,
+            text="Ausgewähltes Asset zurücknehmen",
+            command=self._return_selected_asset,
+        ).pack(
+            side="left",
         )
 
         documents_tab.columnconfigure(0, weight=1)
@@ -493,7 +496,11 @@ class MemberTab(ttk.Frame):
             suffix = ""
             if key == self.claim_sort_column:
                 suffix = " v" if self.claim_sort_descending else " ^"
-            self.claims.heading(key, text=f"{title}{suffix}", command=lambda column=key: self._toggle_claim_sort(column))
+            self.claims.heading(
+                key,
+                text=f"{title}{suffix}",
+                command=lambda column=key: self._toggle_claim_sort(column),
+            )
 
     def _open_selected_claim(self) -> None:
         selected = self.claims.selection()