fix: add JSON-LD to /mcp and /spec, fix heading order and main landmark

Add WebPage JSON-LD structured data to /mcp and /spec pages. Add
publisher url to Organization (required for Rich Results). Change
note title from h4 to p to fix heading order skip. Add main
landmark to /spec page.

Author: caio-pizzol

apps/web/scripts/prerender.ts

@@ -185,7 +185,7 @@ function buildHead(path: string): string {
 				name: "SuperDoc — DOCX editing and tooling",
 				url: "https://superdoc.dev",
 			},
-			publisher: { "@type": "Organization", name: "ooxml.dev" },
+			publisher: { "@type": "Organization", name: "ooxml.dev", url: "https://ooxml.dev" },
 			about: {
 				"@type": "Thing",
 				name: "Office Open XML",
@@ -207,6 +207,26 @@ function buildHead(path: string): string {
 			},
 		};
 		meta.push(`<script type="application/ld+json">${JSON.stringify(jsonLd)}</script>`);
+	} else if (path === "/mcp" || path === "/spec") {
+		const jsonLd = {
+			"@context": "https://schema.org",
+			"@type": "WebPage",
+			name: seo.title.split(" | ")[0].split(" — ")[0],
+			description: seo.description,
+			url,
+			author: {
+				"@type": "Organization",
+				name: "SuperDoc — DOCX editing and tooling",
+				url: "https://superdoc.dev",
+			},
+			publisher: { "@type": "Organization", name: "ooxml.dev", url: "https://ooxml.dev" },
+			about: {
+				"@type": "Thing",
+				name: "Office Open XML",
+				sameAs: "https://en.wikipedia.org/wiki/Office_Open_XML",
+			},
+		};
+		meta.push(`<script type="application/ld+json">${JSON.stringify(jsonLd)}</script>`);
 	}
 
 	return meta.join("\n    ");

apps/web/src/components/ImplementationNote.tsx

@@ -53,7 +53,7 @@ export function ImplementationNote({
 			</div>
 			<div className="flex-1">
 				<div className="flex items-center gap-2">
-					<h4 className="font-semibold text-[var(--color-text-primary)]">{title}</h4>
+					<p className="font-semibold text-[var(--color-text-primary)]">{title}</p>
 					{app && (
 						<span className="rounded bg-[var(--color-bg-tertiary)] px-2 py-0.5 text-xs text-[var(--color-text-muted)]">
 							{app}

apps/web/src/pages/SpecExplorer.tsx

@@ -211,7 +211,7 @@ export function SpecExplorer() {
 		<div className="flex h-screen flex-col overflow-hidden">
 			<Navbar sticky />
 
-			<div className="grid min-h-0 flex-1 grid-cols-[380px_1fr]">
+			<main className="grid min-h-0 flex-1 grid-cols-[380px_1fr]">
 				{/* Search panel */}
 				<div className="flex min-h-0 flex-col border-r border-[var(--color-border)]">
 					{/* Search input */}
@@ -313,7 +313,7 @@ export function SpecExplorer() {
 						onPageChange={handlePageChange}
 					/>
 				</div>
-			</div>
+			</main>
 		</div>
 	);
 }