feat(16-04): render N/M signed badge in DocumentsTable Status column

- Extend DocumentRow type with optional signedCount, totalSigners, hasMultipleSigners
- Render badge after StatusBadge only for multi-signer Sent documents (D-11, D-12, D-13)
- Badge: inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium bg-blue-50 text-blue-700 ml-1.5
- Shows '{N}/{M} signed' text from server-computed token counts
- No badge for single-signer or fully-signed documents

teressa-copeland-homes/src/app/portal/_components/DocumentsTable.tsx

@@ -9,6 +9,9 @@ type DocumentRow = {
   sentAt: Date | null;
   signedAt: Date | null;
   clientId: string;
+  signedCount?: number | null;
+  totalSigners?: number | null;
+  hasMultipleSigners?: boolean;
 };
 
 type Props = { rows: DocumentRow[]; showClientColumn?: boolean };
@@ -62,6 +65,11 @@ export function DocumentsTable({ rows, showClientColumn = true }: Props) {
             )}
             <td style={{ padding: "0.875rem 1.5rem" }}>
               <StatusBadge status={row.status} />
+              {row.hasMultipleSigners && row.status === "Sent" && row.totalSigners != null && row.totalSigners > 0 && (
+                <span className="inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium bg-blue-50 text-blue-700 ml-1.5">
+                  {row.signedCount ?? 0}/{row.totalSigners} signed
+                </span>
+              )}
             </td>
             <td style={{ padding: "0.875rem 1.5rem", color: "#6B7280" }}>
               {row.sentAt