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/lib/invoice-pdf.ts

@@ -21,9 +21,14 @@ const STATUS_KIND: Record<InvoiceStatus, InvoicePdfData['statusKind']> = {
 /** Assemble the PDF view-model from an invoice + dictionary, translating to Persian when locale is fa. */
 export function buildInvoicePdfData(
   invoice: Invoice,
-  opts: { inv: InvoiceDict; appName: string; locale: string },
+  opts: {
+    inv: InvoiceDict;
+    appName: string;
+    locale: string;
+    customer?: { firstName?: string | null; lastName?: string | null; phone?: string | null; email?: string | null };
+  },
 ): InvoicePdfData {
-  const { inv, appName, locale } = opts;
+  const { inv, appName, locale, customer } = opts;
   const isFa = locale.startsWith('fa');
   const pdf = inv.pdf;
 
@@ -34,12 +39,19 @@ export function buildInvoicePdfData(
   const trDesc = (desc?: string) => (isFa ? translateInvoiceDescription(desc) : desc ?? '');
   const trReason = (reason?: string) => (isFa ? translateInvoiceReason(reason) : reason ?? '-');
 
+  const cust = customer ?? invoice.user ?? undefined;
+  const fullName = [cust?.firstName, cust?.lastName].filter(Boolean).join(' ').trim();
+  const phone = cust?.phone || undefined;
+
   const meta: InvoicePdfMeta[] = [
-    { label: pdf.customer, value: invoice.user?.email || invoice.userId },
+    { label: pdf.customer, value: fullName || cust?.email || invoice.userId },
+  ];
+  if (phone) meta.push({ label: pdf.phone, value: phone });
+  meta.push(
     { label: pdf.application, value: invoice.application?.name || trReason(invoice.reason) },
     { label: pdf.createdAt, value: formatDate(invoice.createdAt) },
     { label: inv.method, value: invoice.paymentMethod || '-' },
-  ];
+  );
   if (invoice.paidAt) meta.push({ label: pdf.paidAt, value: formatDate(invoice.paidAt) });
   if (invoice.gatewayTrackingCode) meta.push({ label: inv.tracking, value: invoice.gatewayTrackingCode });
 
@@ -127,9 +139,9 @@ export function buildInvoiceHtml(data: InvoicePdfData): string {
   const metaRows = data.meta
     .map(
       (m) => `
-      <div style="display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid #f1f5f9;">
-        <span style="color:#64748b;font-size:13px;">${esc(m.label)}</span>
-        <span style="color:#0f172a;font-size:13px;font-weight:600;">${esc(m.value)}</span>
+      <div style="display:flex;align-items:baseline;gap:12px;padding:10px 0;border-bottom:1px solid #f1f5f9;">
+        <span style="color:#64748b;font-size:13px;white-space:nowrap;">${esc(m.label)}</span>
+        <span style="flex:1;text-align:left;color:#0f172a;font-size:13px;font-weight:600;direction:ltr;unicode-bidi:plaintext;">${esc(m.value)}</span>
       </div>`,
     )
     .join('');
@@ -206,8 +218,8 @@ export function buildInvoiceHtml(data: InvoicePdfData): string {
       </table>
     </div>
 
-    <!-- totals -->
-    <div style="margin-top:24px;display:flex;justify-content:flex-start;">
+    <!-- totals (left side) -->
+    <div style="margin-top:24px;display:flex;justify-content:flex-end;">
       <div style="width:300px;background:#f8fafc;border:1px solid #f1f5f9;border-radius:16px;padding:8px 20px;">
         ${totalRows}
       </div>
@@ -265,16 +277,17 @@ async function getEmbeddedFontCss(): Promise<string> {
 }
 
 /**
- * Rasterize the invoice template to a PNG via html-to-image.
+ * Rasterize the invoice template to a JPEG via html-to-image.
  *
  * html-to-image renders through an SVG <foreignObject>, i.e. the browser's own
  * layout/text engine, so Persian RTL shaping, spacing and bidi (e.g. emails)
  * come out correct — unlike a re-implemented canvas text layout, which mangles
- * Persian. oklch() colors are handled natively too.
+ * Persian. oklch() colors are handled natively too. JPEG (vs PNG) keeps the
+ * resulting PDF small for this mostly-white document.
  * Exposed separately so it can be exercised/verified without a download.
  */
 export async function renderInvoicePng(data: InvoicePdfData): Promise<InvoicePngResult> {
-  const [{ toPng }, fontEmbedCSS] = await Promise.all([import('html-to-image'), getEmbeddedFontCss()]);
+  const [{ toJpeg }, fontEmbedCSS] = await Promise.all([import('html-to-image'), getEmbeddedFontCss()]);
 
   const host = document.createElement('div');
   host.style.position = 'fixed';
@@ -294,8 +307,9 @@ export async function renderInvoicePng(data: InvoicePdfData): Promise<InvoicePng
 
     const width = node.scrollWidth;
     const height = node.scrollHeight;
-    const dataUrl = await toPng(node, {
+    const dataUrl = await toJpeg(node, {
       pixelRatio: 2,
+      quality: 0.9,
       backgroundColor: '#ffffff',
       width,
       height,
@@ -322,13 +336,13 @@ export async function downloadInvoicePdf(data: InvoicePdfData): Promise<void> {
   let heightLeft = imgHeight;
   let position = 0;
 
-  pdf.addImage(dataUrl, 'PNG', 0, position, imgWidth, imgHeight);
+  pdf.addImage(dataUrl, 'JPEG', 0, position, imgWidth, imgHeight);
   heightLeft -= pageHeight;
 
   while (heightLeft > 0) {
     position -= pageHeight;
     pdf.addPage();
-    pdf.addImage(dataUrl, 'PNG', 0, position, imgWidth, imgHeight);
+    pdf.addImage(dataUrl, 'JPEG', 0, position, imgWidth, imgHeight);
     heightLeft -= pageHeight;
   }