fix(catalog): show real material names, not categories, across quote views

New shared materialLabel() renders the global materials.name with brand/specs
appended only when not already part of the name (deduped; «؟» fallback kept).
Replaces the category-first composer in five places: supplier card badges
(CategoryPage), dashboard item lines (QuoteCard), ledger items summary,
project rows and purchase history. Also fixes the stale Units subtitle
«ضریب تبدیل همان دسته» → «ضریب تبدیل متریال» (category model kept).

frontend/src/lib/quoteUtils.ts

@@ -40,6 +40,22 @@ export function specsLabel(specs: string[]): string {
   return specs.join(" · ");
 }
 
+// نام نمایشی متریال — نام سراسری واقعی (materials.name)، نه دسته.
+// برند و مشخصه فقط وقتی به نام اضافه می‌شوند که داخلش نیامده باشند (بدون تکرار).
+export function materialLabel(m: Pick<Material, "name" | "brand" | "specs" | "category">): string {
+  const name = (m.name || "").trim();
+  const specs = (m.specs || []).filter(Boolean);
+  if (!name && !m.brand && !specs.length) return m.category === "؟" ? "؟" : "کالا";
+  if (!name) {
+    return [m.brand, ...specs].filter(Boolean).join(" ") || "کالا";
+  }
+  const parts = [name];
+  if (m.brand && !name.includes(m.brand)) parts.push(m.brand);
+  const missing = specs.filter((s) => !name.includes(s));
+  if (missing.length) parts.push(`(${missing.join("، ")})`);
+  return parts.join(" ");
+}
+
 // آرایه‌ی termsheet_ids یک قلم (هر دو فرمت قدیم/جدید)
 export function itemTermsheetIds(li: LineItem): string[] {
   if (li.termsheet_ids) return li.termsheet_ids;
@@ -157,8 +173,7 @@ export function projectCell(q: Quote): string {
 export function itemsSummary(store: Store, q: Quote): { text: string; count: number } {
   const items = activeItems(q).map((li) => {
     const m = materialById(store.materials, li.material_id);
-    const specs = materialSpecs(m);
-    return `${m.category} ${m.brand}${specs.length ? " " + specs.join(" · ") : ""}`;
+    return materialLabel(m);
   });
   return { text: items.join("، "), count: items.length };
 }

frontend/src/pages/Dashboard/QuoteCard.tsx

@@ -5,7 +5,7 @@ import {
   isExpired,
   itemsSummary,
   materialById,
-  materialSpecs,
+  materialLabel,
   projectCell,
   quoteTotal,
   supplierById,
@@ -165,11 +165,10 @@ export function QuoteCard({ store, q, expanded, onToggleExpand, onAccept, onEdit
               <div className="flex flex-col gap-1 text-[11.5px] leading-5 text-muted">
                 {store.quotes.find((x) => x.id === q.id)?.line_items?.filter((li) => !li.rejected).map((li) => {
                   const m = materialById(store.materials, li.material_id);
-                  const specs = materialSpecs(m);
                   return (
                     <span key={li.id} className="flex items-center gap-1">
                       <span className="h-1.5 w-1.5 shrink-0 rounded-full bg-accent/40" />
-                      {m.category} {m.brand}{specs.length ? ` · ${specs.join(" · ")}` : ""}
+                      {materialLabel(m)}
                       <span className="text-[10px] text-muted/70">
                         {fmtNum(li.quantity)} {li.unit}
                       </span>

frontend/src/pages/Projects/ProjectsPage.tsx

@@ -19,7 +19,7 @@ import {
   activeItems,
   lineItemTotal,
   materialById,
-  materialSpecs,
+  materialLabel,
   refConverted,
   supplierById,
 } from "../../lib/quoteUtils";
@@ -154,9 +154,7 @@ function renderProjectDetail(store: Store, name: string): React.ReactElement {
 
   const matName = (mid: string) => {
     const m = materialById(store.materials, mid);
-    if (m.category === "؟") return "؟";
-    const specs = materialSpecs(m);
-    return `${m.category} ${m.brand}${specs.length ? " · " + specs.join(" · ") : ""}`;
+    return materialLabel(m);
   };
 
   const supName = (sid: string) => {

frontend/src/pages/Suppliers/CategoryPage.tsx

@@ -11,6 +11,7 @@ import { Header, PageLayout } from "../../components/layout/Header";
 import { EmptyState } from "../../components/EmptyState";
 import { Combobox } from "../../components/Combobox";
 import { SupplierCard, suppliersOfCategory } from "./supplierUtils";
+import { materialLabel } from "../../lib/quoteUtils";
 import { Button } from "../../components/ui/button";
 
 // صفحه‌ی تأمین‌کننده‌های یک دسته + فرم افزودن تأمین‌کننده
@@ -53,7 +54,7 @@ export function CategoryPage() {
         if (li.rejected) return;
         const m = materials.find((x) => x.id === li.material_id);
         if (!m) return;
-        const label = `${m.category}${m.brand ? " " + m.brand : ""}${m.specs.length ? " (" + m.specs.join("، ") + ")" : ""}`;
+        const label = materialLabel(m);
         if (!map.has(q.supplier_id)) map.set(q.supplier_id, []);
         const list = map.get(q.supplier_id)!;
         if (!list.includes(label)) list.push(label);

frontend/src/pages/Suppliers/PurchaseHistory.tsx

@@ -3,7 +3,7 @@ import { Link } from "react-router-dom";
 import { Building2, Paperclip, Plus } from "lucide-react";
 import type { Attachment, Material, Quote, Supplier } from "../../lib/types";
 import { api } from "../../lib/api";
-import { activeItems, materialById, materialSpecs, quoteTotal, specsLabel } from "../../lib/quoteUtils";
+import { activeItems, materialById, materialLabel, quoteTotal } from "../../lib/quoteUtils";
 import { fmtDate, faNum } from "../../lib/formatters";
 import { groupCommas } from "../../lib/numutil";
 import { STATUS_LABEL } from "../../lib/constants";
@@ -85,8 +85,7 @@ export function PurchaseHistory({ supplier, quotes, materials }: PurchaseHistory
       {purchases.map((q) => {
         const items = activeItems(q).map((li) => {
           const m = materialById(materials, li.material_id);
-          const specs = materialSpecs(m);
-          return `${m.category} ${m.brand}${specs.length ? " " + specsLabel(specs) : ""}`.trim();
+          return materialLabel(m);
         });
         const total = quoteTotal(q);
         const attach = attachments[q.id];

frontend/src/pages/Units/UnitsPage.tsx

@@ -331,7 +331,7 @@ export function UnitsPage() {
 
   return (
     <div className="min-h-screen">
-      <Header title="ضرایب تبدیل" sub="اول موضوع، بعد دسته — واحد مرجع و ضریب تبدیل همان دسته را تنظیم کنید" backTo="/" backLabel="بازگشت به دفتر" />
+      <Header title="ضرایب تبدیل" sub="اول موضوع، بعد دسته — واحد مرجع و ضریب تبدیل متریال را تنظیم کنید" backTo="/" backLabel="بازگشت به دفتر" />
       <PageLayout>
         {!selectedTopic ? (
           <div>