feat(admin): add production error center and refresh CMS dependencies

src/components/admin/rich-text.tsx

@@ -2,10 +2,8 @@
 
 import { useEffect, useId, useRef, useState } from "react";
 
-// TinyMCE community build, loaded from the public jsDelivr CDN. `no-api-key`
-// is the documented sentinel for the free self-hosted/CDN build and silences
-// the "register for an API key" notification.
-const TINYMCE_SRC = "https://cdn.jsdelivr.net/npm/tinymce@6/tinymce.min.js";
+// Editor assets are pinned in the lockfile and copied during build.
+const TINYMCE_SRC = "/vendor/tinymce/tinymce.min.js";
 
 type TinyMCEGlobal = {
 	init: (opts: Record<string, unknown>) => Promise<unknown>;

src/components/smooth-scroll.tsx

@@ -1,34 +0,0 @@
-"use client";
-
-import { Lenis } from "lenis/react";
-import { usePathname } from "next/navigation";
-import { useEffect, useState } from "react";
-
-export function SmoothScroll() {
-	const pathname = usePathname();
-	const isAdmin = pathname === "/admin" || pathname?.startsWith("/admin/");
-	const [prefersReduced, setPrefersReduced] = useState(true);
-
-	useEffect(() => {
-		const mq = window.matchMedia("(prefers-reduced-motion: reduce)");
-		setPrefersReduced(mq.matches);
-		const onChange = (e: MediaQueryListEvent) => setPrefersReduced(e.matches);
-		mq.addEventListener("change", onChange);
-		return () => mq.removeEventListener("change", onChange);
-	}, []);
-
-	// Admin panels own their scroll containers; root wheel smoothing consumes their events.
-	if (prefersReduced || isAdmin) return null;
-
-	return (
-		<Lenis
-			root
-			options={{
-				duration: 1.2,
-				lerp: 0.1,
-				smoothWheel: true,
-				wheelMultiplier: 1,
-			}}
-		/>
-	);
-}