feat(i18n): add VAT labels and email sent messages in German and English

style(admin): increase max-width of admin page and adjust table styles

fix(n8n): enhance workflow import and publishing process

fix(workflows): update SQL queries for fetching and updating sales orders

feat(migrations): normalize rental types and enhance email guard for individuell rentals

feat(migrations): add RPC for updating deposit in sales orders

fix(migrations): ensure individuell orders persist net/vat components and backfill existing records

test: update last run status to failed

frontend/admin.html

@@ -281,6 +281,7 @@
             <h3 id="orderDialogTitle" style="margin:0;">Bestellung</h3>
             <button class="dialog-close" id="orderDialogClose" aria-label="Close">×</button>
         </div>
+        <div class="dialog-tabs" id="orderDialogTabs" role="tablist"></div>
         <div class="dialog-body" id="orderDialogBody"></div>
         <div class="dialog-footer" id="orderDialogFooter"></div>
     </dialog>