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/finance/src/server/actions/finance-actions.ts

@@ -15,7 +15,7 @@ import { createFinanceApi } from '../api';
 
 export const createSepaBatch = authActionClient
   .inputSchema(CreateSepaBatchSchema)
-  .action(async ({ parsedInput: input, ctx }) => {
+  .action(async ({ parsedInput: input, ctx: _ctx }) => {
     const client = getSupabaseServerClient();
     const logger = await getLogger();
     const api = createFinanceApi(client);
@@ -29,7 +29,7 @@ export const createSepaBatch = authActionClient
 
 export const addSepaItem = authActionClient
   .inputSchema(AddSepaItemSchema)
-  .action(async ({ parsedInput: input, ctx }) => {
+  .action(async ({ parsedInput: input, ctx: _ctx }) => {
     const client = getSupabaseServerClient();
     const logger = await getLogger();
     const api = createFinanceApi(client);
@@ -51,7 +51,7 @@ export const generateSepaXml = authActionClient
       creditorId: z.string(),
     }),
   )
-  .action(async ({ parsedInput: input, ctx }) => {
+  .action(async ({ parsedInput: input, ctx: _ctx }) => {
     const client = getSupabaseServerClient();
     const logger = await getLogger();
     const api = createFinanceApi(client);
@@ -76,7 +76,7 @@ export const generateSepaXml = authActionClient
 
 export const createInvoice = authActionClient
   .inputSchema(CreateInvoiceSchema)
-  .action(async ({ parsedInput: input, ctx }) => {
+  .action(async ({ parsedInput: input, ctx: _ctx }) => {
     const client = getSupabaseServerClient();
     const logger = await getLogger();
     const api = createFinanceApi(client);

packages/features/finance/src/server/api.ts

@@ -16,7 +16,7 @@ import {
 /* eslint-disable @typescript-eslint/no-explicit-any */
 
 export function createFinanceApi(client: SupabaseClient<Database>) {
-  const db = client;
+  const _db = client;
 
   return {
     // --- SEPA Batches ---