feat(seo): add PWA manifest and enrich JSON-LD

- add app/manifest.ts (MetadataRoute.Manifest)
- enrich Organization JSON-LD with sameAs, contactPoint, makesOffer
- link WebSite JSON-LD to Organization via publisher @id
- sitemap: use SITE constant, drop /privacy (disallowed in robots.ts)

Author: gracefullight

app/layout.tsx

@@ -1,5 +1,7 @@
 import type { Metadata } from "next";
 import { Analytics } from "@vercel/analytics/next";
+import { SITE } from "@/lib/site";
+import { SOLUTIONS } from "@/lib/solutions";
 import "./globals.css";
 
 export const metadata: Metadata = {
@@ -46,18 +48,45 @@ export const metadata: Metadata = {
 const ORGANIZATION_JSONLD = {
   "@context": "https://schema.org",
   "@type": "Organization",
-  name: "FIRST FLUKE",
-  legalName: "퍼스트플루크 (FIRST FLUKE)",
-  url: "https://firstfluke.com",
-  logo: "https://firstfluke.com/logo.png",
+  "@id": `${SITE.url}/#organization`,
+  name: SITE.name,
+  legalName: SITE.legalName,
+  url: SITE.url,
+  logo: `${SITE.url}/logo.png`,
+  image: `${SITE.url}/og.png`,
+  sameAs: [`https://www.threads.net/@${SITE.threadsHandle}`],
+  contactPoint: [
+    {
+      "@type": "ContactPoint",
+      contactType: "customer support",
+      url: `${SITE.url}/#contact`,
+      availableLanguage: ["Korean", "English"],
+    },
+  ],
+  award: SITE.selectionLabel,
+  makesOffer: SOLUTIONS.map((solution) => ({
+    "@type": "Offer",
+    name: solution.name,
+    category: solution.category,
+    url: solution.href,
+    itemOffered: {
+      "@type": "SoftwareApplication",
+      name: solution.name,
+      description: solution.tagline,
+      applicationCategory: "BusinessApplication",
+      url: solution.href,
+    },
+  })),
 };
 
 const WEBSITE_JSONLD = {
   "@context": "https://schema.org",
   "@type": "WebSite",
-  name: "FIRST FLUKE",
-  url: "https://firstfluke.com",
+  "@id": `${SITE.url}/#website`,
+  name: SITE.name,
+  url: SITE.url,
   inLanguage: "ko-KR",
+  publisher: { "@id": `${SITE.url}/#organization` },
 };
 
 export default function RootLayout({

app/manifest.ts

@@ -0,0 +1,35 @@
+import type { MetadataRoute } from "next";
+import { SITE } from "@/lib/site";
+
+export const dynamic = "force-static";
+
+export default function manifest(): MetadataRoute.Manifest {
+  return {
+    name: SITE.name,
+    short_name: SITE.name,
+    description:
+      "AI와 기술로 더 나은 일상을 만드는 팀, FIRST FLUKE. 모두의 창업 2026 AI 솔루션 공급기업 선정.",
+    start_url: "/",
+    scope: "/",
+    display: "standalone",
+    orientation: "portrait",
+    background_color: "#ffffff",
+    theme_color: "#0a0a0a",
+    lang: "ko-KR",
+    categories: ["business", "productivity", "technology"],
+    icons: [
+      {
+        src: "/favicon.png",
+        sizes: "512x512",
+        type: "image/png",
+        purpose: "any",
+      },
+      {
+        src: "/favicon.png",
+        sizes: "512x512",
+        type: "image/png",
+        purpose: "maskable",
+      },
+    ],
+  };
+}

app/sitemap.ts

@@ -1,21 +1,16 @@
 import type { MetadataRoute } from "next";
+import { SITE } from "@/lib/site";
 
 export const dynamic = "force-static";
 
 export default function sitemap(): MetadataRoute.Sitemap {
-  const base = "https://firstfluke.com";
+  const lastModified = new Date();
   return [
     {
-      url: `${base}/`,
-      lastModified: new Date(),
+      url: `${SITE.url}/`,
+      lastModified,
       changeFrequency: "monthly",
       priority: 1,
     },
-    {
-      url: `${base}/privacy`,
-      lastModified: new Date(),
-      changeFrequency: "yearly",
-      priority: 0.3,
-    },
   ];
 }