Add Meshkee SEO, customer auth menu, and footer polish.

Implement canonical product/category/blog URLs, sitemap-config endpoint, page metadata, customer login dropdown with admin handoff, safeteb-style footer bar, backend favicon, and remove the standalone partners strip.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/app/about/page.tsx

@@ -6,13 +6,14 @@ import PageBanner from "@/components/PageBanner";
 import MissionVision from "@/components/MissionVision";
 import ImportCountries from "@/components/ImportCountries";
 import Features from "@/components/Features";
-import Partners from "@/components/Partners";
+import { pageMetadata } from "@/lib/seo";
 
-export const metadata: Metadata = {
+export const metadata: Metadata = pageMetadata({
   title: "درباره ما | آراد آریسمان",
   description:
     "آشنایی با شرکت آراد آریسمان؛ بیش از ۲۳ سال تجربه در تولید و عرضه مکمل‌های غذایی دام، طیور و زنبور عسل.",
-};
+  path: "/about",
+});
 
 export default function AboutPage() {
   return (
@@ -84,8 +85,6 @@ export default function AboutPage() {
 
       <ImportCountries />
 
-      <Partners />
-
       <section className="py-16 sm:py-20">
         <Container>
           <div className="rounded-3xl bg-primary px-8 py-14 sm:px-16 text-center">