feat(suppliers): show resolved supplier name on the PO list page

src/app/dashboard/financial/purchase-orders/page.tsx

@@ -9,7 +9,7 @@ export default async function PurchasingPage() {
   const pb = await pbAdmin();
 
   const [pos, items, dns, sites, receivedAll] = await Promise.all([
-    pb.collection("purchase_orders").getFullList({ expand: "site" }),
+    pb.collection("purchase_orders").getFullList({ expand: "site,supplier_ref" }),
     pb.collection("purchase_order_items").getFullList(),
     // Only used here to compute each PO's own delivery-note count and
     // pending-DN badge. The needs-review queue itself (the DN triage
@@ -98,11 +98,16 @@ export default async function PurchasingPage() {
         p.expand as { site?: { name?: string; project_code?: string } } | undefined
       )?.site;
       const projectCode = site?.project_code ?? "";
+      const supplierRef = (
+        p.expand as { supplier_ref?: { name?: string } } | undefined
+      )?.supplier_ref;
 
       return {
         id: p.id,
         poNumber: p.purchase_order_number,
         supplier: p.supplier,
+        supplierRefId: p.supplier_ref ?? null,
+        supplierRefName: supplierRef?.name ?? null,
         projectCode,
         projectName: site?.name ?? projectCode,
         requiredByDate: p.required_by_date,

src/app/dashboard/financial/purchase-orders/purchasing-view.tsx

@@ -26,7 +26,7 @@ import {
   SelectValue,
 } from "@/components/ui/select";
 import { Pagination } from "@/components/ui/pagination";
-import { cn, formatCurrency, formatNumber, isUnknownSupplier } from "@/lib/utils";
+import { cn, formatCurrency, formatNumber } from "@/lib/utils";
 
 const PAGE_SIZE = 25;
 const PO_BASE = "/dashboard/financial/purchase-orders";
@@ -37,6 +37,10 @@ export interface PoRow {
   projectCode: string;
   projectName: string;
   supplier: string;
+  /** Resolved supplier record id, if a match was made at upload or later. */
+  supplierRefId: string | null;
+  /** Display name of the linked supplier (mirrors supplierRefId's record). */
+  supplierRefName: string | null;
   requiredByDate: string;
   orderedBy: string;
   totalValue: number;
@@ -323,7 +327,7 @@ function PoListItem({ po }: { po: PoRow }) {
         <div className="min-w-0 flex-1">
           <div className="flex flex-wrap items-baseline gap-x-3 gap-y-1">
             <span className="font-mono text-sm font-semibold">{po.poNumber}</span>
-            {isUnknownSupplier(po.supplier) ? (
+            {!po.supplierRefId ? (
               <Badge
                 variant="outline"
                 className="gap-1 border-amber-500/40 bg-amber-500/15 text-amber-700 dark:text-amber-300"
@@ -333,7 +337,7 @@ function PoListItem({ po }: { po: PoRow }) {
               </Badge>
             ) : (
               <span className="truncate text-sm text-foreground">
-                {po.supplier}
+                {po.supplierRefName}
               </span>
             )}
             <Badge variant="outline" className="font-mono text-xs">