Bug/gh issues fiz (#1103)

* refactor: optimize page loading and data fetching

* fix: resolve recurring production runtime errors

* feat: add MCP company and customer updates

* fix: handle year-end tax adjustments

* feat: harden annual report compliance

* fix: expand invoice logo and font support

* fix: sanitize API route error responses

* fix: sanitize user-facing error messages

* feat: persist onboarding and tax assessment notices

* fix: reduce cloud backup audit churn

* feat: refine invoice editor layout

* fix: show saved tax adjustments in INK2

* fix: complete annual report API mappings

* docs: record operational safeguards and decisions

* fix: harden annual report review findings

* fix: adjust column span for description based on VAT registration

* New css class name

app/api/import/customers/execute/route.ts

@@ -9,6 +9,7 @@ import { withRouteContext } from '@/lib/api/with-route-context'
 import { errorResponseFromCode } from '@/lib/errors/get-structured-error'
 import type { Customer } from '@/types'
 import type { CustomerImportExecuteResult } from '@/lib/import/customers/types'
+import { getErrorMessage as getUserErrorMessage } from '@/lib/errors/get-error-message'
 
 ensureInitialized()
 
@@ -126,7 +127,7 @@ export const POST = withRouteContext(
             .single()
 
           if (error) {
-            errors.push({ row_index: row.row_index, name: row.name, reason: error.message })
+            errors.push({ row_index: row.row_index, name: row.name, reason: getUserErrorMessage(error) })
             continue
           }
           if (data) updated.push(data as Customer)
@@ -162,7 +163,7 @@ export const POST = withRouteContext(
             skipped++
             continue
           }
-          errors.push({ row_index: row.row_index, name: row.name, reason: error.message })
+          errors.push({ row_index: row.row_index, name: row.name, reason: getUserErrorMessage(error) })
           continue
         }
         if (data) {
@@ -200,7 +201,7 @@ export const POST = withRouteContext(
       opLog.error('customer import execute failed', err as Error)
       return errorResponseFromCode('REG_IMPORT_EXECUTE_FAILED', opLog, {
         requestId,
-        details: { reason: err instanceof Error ? err.message : 'unknown' },
+        details: { reason: err instanceof Error ? getUserErrorMessage(err) : 'unknown' },
       })
     }
   },