feat(footer): name the visitor's city in the search chip and link the chips

The first chip said "your city" on every domain even though each domain is
already scoped to one; it now carries that city's name, falling back to the
old wording on the root domain, which has no city. Both site chips link to
"/" — relative, so each domain lands on its own home page rather than
throwing the visitor onto another one — and the third is retitled to name
the product it points at.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

components/layout/footer/index.js

@@ -16,16 +16,28 @@ import LogoNamad from "./LogoNamad";
 import HeadMenu from "./menu/HeadMenu";
 import ListMenu from "./menu/ListMenu";
 import { useState } from "react";
+import { isRootCity } from "@/lib/rootCity";
 
-const head = [
-  { icon: <LocationF />, text: "جستجوی پزشک در شهر شما" },
-  { icon: <CalendarAddF />, text: "نوبت گیری سریع و آسان" },
-  {
-    icon: <StethoscopeF />,
-    text: "دشبورد اختصاصی برای پزشکان",
-    link: "https://clinic-pro.ir/",
-  },
-];
+// روی دامنهٔ ریشه (nobat724.com) شهری در کار نیست، پس همان «شهر شما» می‌ماند؛
+// روی دامنهٔ هر شهر، نام همان شهر می‌نشیند. لینک نسبی است تا هر دامنه به ریشهٔ
+// خودش برود و کاربر بین دامنه‌ها پرت نشود.
+const buildHead = (matchedCity) => {
+  const cityName = isRootCity(matchedCity) ? null : matchedCity?.name;
+
+  return [
+    {
+      icon: <LocationF />,
+      text: cityName ? `جستجوی پزشک در شهر ${cityName}` : "جستجوی پزشک در شهر شما",
+      link: "/",
+    },
+    { icon: <CalendarAddF />, text: "نوبت گیری سریع و آسان", link: "/" },
+    {
+      icon: <StethoscopeF />,
+      text: "مدیریت کلینیک با کلینیک پرو",
+      link: "https://clinic-pro.ir/",
+    },
+  ];
+};
 
 function buildSocialUrl(name, value) {
   if (!value) return null;
@@ -70,12 +82,8 @@ function Footer({ matchedCity }) {
   return (
     <div className="pb-[11px]">
       <div className="flex items-center justify-evenly gap-[12px]">
-        {head.map((item, idx) => (
-          <Link
-            key={idx}
-            href={item.link || ""}
-            onClick={(e) => !item.link && e.preventDefault}
-          >
+        {buildHead(matchedCity).map((item, idx) => (
+          <Link key={idx} href={item.link}>
             <div
               className="flex flex-col lg:flex-row items-center cursor-pointer justify-start gap-1 p-[6px] hover:transition-all transition-all duration-300 hover:duration-300 rounded-[8px] border-solid border border-[#EFEFEF] bg-[#F7F7F7] hover:bg-none hover:border-[#FDBD9F]"
             >