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

apps/web/app/[locale]/home/[account]/layout.tsx

@@ -96,36 +96,37 @@ function injectAccountFeatureRoutes(
 
   if (features.fischerei) {
     featureGroups.push({
-      label: 'common:routes.fisheriesManagement',
+      label: 'common.routes.fisheriesManagement',
       collapsible: true,
+      collapsed: true,
       children: [
         {
-          label: 'common:routes.fisheriesOverview',
+          label: 'common.routes.fisheriesOverview',
           path: `/home/${account}/fischerei`,
           Icon: <Fish className={iconClasses} />,
         },
         {
-          label: 'common:routes.fisheriesWaters',
+          label: 'common.routes.fisheriesWaters',
           path: `/home/${account}/fischerei/waters`,
           Icon: <Waves className={iconClasses} />,
         },
         {
-          label: 'common:routes.fisheriesLeases',
+          label: 'common.routes.fisheriesLeases',
           path: `/home/${account}/fischerei/leases`,
           Icon: <Anchor className={iconClasses} />,
         },
         {
-          label: 'common:routes.fisheriesCatchBooks',
+          label: 'common.routes.fisheriesCatchBooks',
           path: `/home/${account}/fischerei/catch-books`,
           Icon: <BookOpen className={iconClasses} />,
         },
         {
-          label: 'common:routes.fisheriesPermits',
+          label: 'common.routes.fisheriesPermits',
           path: `/home/${account}/fischerei/permits`,
           Icon: <ShieldCheck className={iconClasses} />,
         },
         {
-          label: 'common:routes.fisheriesCompetitions',
+          label: 'common.routes.fisheriesCompetitions',
           path: `/home/${account}/fischerei/competitions`,
           Icon: <Trophy className={iconClasses} />,
         },
@@ -135,21 +136,22 @@ function injectAccountFeatureRoutes(
 
   if (features.meetings) {
     featureGroups.push({
-      label: 'common:routes.meetingProtocols',
+      label: 'common.routes.meetingProtocols',
       collapsible: true,
+      collapsed: true,
       children: [
         {
-          label: 'common:routes.meetingsOverview',
+          label: 'common.routes.meetingsOverview',
           path: `/home/${account}/meetings`,
           Icon: <BookMarked className={iconClasses} />,
         },
         {
-          label: 'common:routes.meetingsProtocols',
+          label: 'common.routes.meetingsProtocols',
           path: `/home/${account}/meetings/protocols`,
           Icon: <ScrollText className={iconClasses} />,
         },
         {
-          label: 'common:routes.meetingsTasks',
+          label: 'common.routes.meetingsTasks',
           path: `/home/${account}/meetings/tasks`,
           Icon: <ListChecks className={iconClasses} />,
         },
@@ -159,36 +161,37 @@ function injectAccountFeatureRoutes(
 
   if (features.verband) {
     featureGroups.push({
-      label: 'common:routes.associationManagement',
+      label: 'common.routes.associationManagement',
       collapsible: true,
+      collapsed: true,
       children: [
         {
-          label: 'common:routes.associationOverview',
+          label: 'common.routes.associationOverview',
           path: `/home/${account}/verband`,
           Icon: <Building2 className={iconClasses} />,
         },
         {
-          label: 'common:routes.associationHierarchy',
+          label: 'common.routes.associationHierarchy',
           path: `/home/${account}/verband/hierarchy`,
           Icon: <Network className={iconClasses} />,
         },
         {
-          label: 'common:routes.associationMemberSearch',
+          label: 'common.routes.associationMemberSearch',
           path: `/home/${account}/verband/members`,
           Icon: <SearchCheck className={iconClasses} />,
         },
         {
-          label: 'common:routes.associationEvents',
+          label: 'common.routes.associationEvents',
           path: `/home/${account}/verband/events`,
           Icon: <Share2 className={iconClasses} />,
         },
         {
-          label: 'common:routes.associationReporting',
+          label: 'common.routes.associationReporting',
           path: `/home/${account}/verband/reporting`,
           Icon: <PieChart className={iconClasses} />,
         },
         {
-          label: 'common:routes.associationTemplates',
+          label: 'common.routes.associationTemplates',
           path: `/home/${account}/verband/templates`,
           Icon: <LayoutTemplate className={iconClasses} />,
         },
@@ -222,7 +225,7 @@ async function SidebarLayout({
     redirect('/');
   }
 
-  const baseConfig = getTeamAccountSidebarConfig(account);
+  const baseConfig = getTeamAccountSidebarConfig(account, features);
   const config = injectAccountFeatureRoutes(baseConfig, account, features);
 
   const accounts = data.accounts.map(({ name, slug, picture_url }) => ({
@@ -275,7 +278,7 @@ async function HeaderLayout({
     getAccountFeatures(account),
   ]);
 
-  const baseConfig = getTeamAccountSidebarConfig(account);
+  const baseConfig = getTeamAccountSidebarConfig(account, features);
   const config = injectAccountFeatureRoutes(baseConfig, account, features);
 
   const accounts = data.accounts.map(({ name, slug, picture_url }) => ({