refactor(search): add IconInput size variant and adopt across search bars

app/(main)/page.tsx

@@ -2,7 +2,7 @@ import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar"
 import { Badge } from "@/components/ui/badge"
 import { Button } from "@/components/ui/button"
 import { Card, CardContent, CardFooter, CardHeader, CardTitle } from "@/components/ui/card"
-import { Input } from "@/components/ui/input"
+import { IconInput } from "@/components/ui/icon-input"
 import { listGames, listPlayers, listShops } from "@/lib/api"
 import { GameIcon } from "@/lib/game-icons"
 import { ArrowRight, Search, ShoppingBag, Star } from "lucide-react"
@@ -30,17 +30,15 @@ export default function HomePage() {
           </div>
 
           <div id="discover-search" className="w-full max-w-2xl mx-auto">
-            <form action="/search" className="relative flex items-center w-full max-w-xl mx-auto">
-              <Search className="absolute left-4 h-5 w-5 text-muted-foreground z-10" />
-              <Input
+            <form action="/search" className="w-full max-w-xl mx-auto">
+              <IconInput
+                inputSize="lg"
+                icon={<Search />}
                 type="text"
                 name="q"
                 placeholder="搜索陪玩、店铺、游戏..."
-                className="w-full h-12 pl-12 pr-24 rounded-xl border-border bg-card text-base shadow-[var(--shadow-card)] transition-shadow focus:shadow-[var(--shadow-card-hover)]"
+                className="w-full border-border bg-card shadow-[var(--shadow-card)] transition-shadow focus:shadow-[var(--shadow-card-hover)]"
               />
-              <Button type="submit" className="absolute right-1.5 rounded-lg px-6 h-9">
-                搜索
-              </Button>
             </form>
           </div>
         </div>