fix: QA audit — lint cleanup, i18n fixes, module visibility, sidebar UX

- Fix 97 lint errors → 0 (unused imports, params, variables across 40+ files)
- Fix i18n key format: colon → dot notation for next-intl compatibility
- Add missing i18n keys (routes.application, routes.home, confirm)
- Fix module visibility: sidebar now respects per-account DB features
- Fix inject function: use dot-notation keys, add collapsed:true defaults
- Fix ConfirmDialog: use useTranslations instead of hardcoded German defaults
- Fix events page: replace placeholder 'Beschreibung' with proper description
- Fix Dockerfile: add NEXT_PUBLIC_CI ARG for Docker builds
- Collapse secondary sidebar sections by default for cleaner UX

packages/features/verbandsverwaltung/src/components/club-fee-billing-table.tsx

@@ -29,7 +29,7 @@ interface ClubFeeBillingTableProps {
 
 export function ClubFeeBillingTable({
   billings,
-  clubId,
+  clubId: _clubId,
 }: ClubFeeBillingTableProps) {
   const [showPaid, setShowPaid] = useState(false);
 

packages/features/verbandsverwaltung/src/components/club-notes-list.tsx

@@ -33,7 +33,7 @@ const NOTE_ICONS: Record<string, React.ReactNode> = {
   erinnerung: <Bell className="h-4 w-4" />,
 };
 
-export function ClubNotesList({ notes, clubId }: ClubNotesListProps) {
+export function ClubNotesList({ notes, clubId: _clubId }: ClubNotesListProps) {
   const { execute: executeComplete } = useAction(completeClubNote, {
     onSuccess: () => {
       toast.success('Aufgabe erledigt');