feat(invoices): show customer name/phone, align meta column, totals left, JPEG

- Invoice PDF now shows the customer's full name and a phone row (sourced from
  the auth store for the user page, invoice.user for admin) instead of just email.
- Left-align all meta values into a single clean column (unicode-bidi:plaintext
  so Persian names stay RTL while phone/dates read LTR).
- Move the totals box to the left side of the page.
- Rasterize as JPEG (q0.9) instead of PNG to keep the file small (~130KB).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/app/[lang]/dashboard/invoices/page.tsx

@@ -9,6 +9,7 @@ import api from '@/lib/api';
 import { useT, useLocale } from '@/i18n/I18nProvider';
 import { translateInvoiceLabel, translateInvoiceDescription, translateInvoiceReason } from '@/lib/invoice-labels';
 import { downloadInvoicePdf, buildInvoicePdfData } from '@/lib/invoice-pdf';
+import { useAuthStore } from '@/lib/store';
 import type { Invoice, InvoiceStatus } from '@/types';
 
 const statusClasses: Record<InvoiceStatus, string> = {
@@ -29,6 +30,7 @@ export default function InvoicesPage() {
   const lineLabel = (label?: string) => (isFa ? translateInvoiceLabel(label) : (label ?? '-'));
   const lineDesc = (desc?: string) => (isFa ? translateInvoiceDescription(desc) : (desc ?? ''));
   const reasonLabel = (reason?: string) => (isFa ? translateInvoiceReason(reason) : (reason ?? '-'));
+  const authUser = useAuthStore((s) => s.user);
   const queryClient = useQueryClient();
   const searchParams = useSearchParams();
   const [statusFilter, setStatusFilter] = useState<'all' | 'unpaid' | InvoiceStatus>('all');
@@ -116,7 +118,14 @@ export default function InvoicesPage() {
 
   const downloadPdfMutation = useMutation({
     mutationFn: (invoice: Invoice) =>
-      downloadInvoicePdf(buildInvoicePdfData(invoice, { inv, appName: t.common.appName, locale })),
+      downloadInvoicePdf(
+        buildInvoicePdfData(invoice, {
+          inv,
+          appName: t.common.appName,
+          locale,
+          customer: invoice.user ?? authUser ?? undefined,
+        }),
+      ),
     onError: () => notify.error(inv.downloadFailed),
   });
   const dueAmount = Number(selectedInvoice?.dueAmount || 0);