Custom post content blocks (images/gallery/video/quote) + backend-driven SEO settings

RichText.tsx switched to Payload's official React renderer + custom
JSXConverters (same call signature, LiveRichText/LivePostContent
untouched) — needed to render the new Lexical Blocks the Payload repo's
Posts.content just gained. Converters follow the existing CMS-image
convention (relative + aspect-[...] + fill + object-cover); the video
block resolves YouTube/Vimeo links to an iframe embed.

New getSeoSettings() fetcher (same pattern as getKleinunternehmer()),
app/layout.tsx now generateMetadata() reading it with the same fallback
values it used to hardcode. Per-post SEO overrides (seoTitle/
seoDescription/seoImage) wired into the blog detail page's metadata,
falling back to title/excerpt/thumbnail when empty.

Also fixed while auditing every page's metadata: missing descriptions on
3 konto pages, a static title on the dynamic order-detail route, and
missing OG images on /shop and /blog.

app/layout.tsx

@@ -4,7 +4,7 @@ import "./globals.css";
 import { Navbar } from "./components/Navbar";
 import { CartFlyProvider } from "./components/CartFly";
 import { CartSync } from "./components/CartSync";
-import { getProducts } from "./lib/payload";
+import { getProducts, getSeoSettings } from "./lib/payload";
 
 const inter = Inter({
   variable: "--font-inter",
@@ -30,22 +30,32 @@ const lora = Lora({
   weight: ["400", "600"],
 });
 
-export const metadata: Metadata = {
-  metadataBase: new URL("https://einfach-produktiv.mk360.de"),
-  title: {
-    default: "einfach produktiv. – Werkzeuge und Impulse für einen leichteren Alltag",
-    template: "%s | einfach produktiv.",
-  },
-  description: "Werkzeuge, Impulse und ein Blog für mehr Klarheit im Alltag.",
-  openGraph: {
-    siteName: "einfach produktiv.",
-    locale: "de_DE",
-    type: "website",
-  },
-  twitter: {
-    card: "summary_large_image",
-  },
-};
+// Backend-driven since 2026-07-24 (CompanySettings' "SEO" tab) — the
+// literal strings below are only the fallback getSeoSettings() returns if
+// that field is empty or unreachable, kept identical to what used to be
+// hardcoded here so nothing changes until an admin actually fills in the
+// new fields.
+export async function generateMetadata(): Promise<Metadata> {
+  const seo = await getSeoSettings();
+  return {
+    metadataBase: new URL("https://einfach-produktiv.mk360.de"),
+    title: {
+      default: seo.defaultTitle ?? "einfach produktiv.",
+      template: seo.titleTemplate ?? "%s | einfach produktiv.",
+    },
+    description: seo.defaultDescription ?? undefined,
+    openGraph: {
+      siteName: "einfach produktiv.",
+      locale: "de_DE",
+      type: "website",
+      images: seo.defaultOgImage ? [{ url: seo.defaultOgImage }] : undefined,
+    },
+    twitter: {
+      card: "summary_large_image",
+      images: seo.defaultOgImage ? [seo.defaultOgImage] : undefined,
+    },
+  };
+}
 
 export default async function RootLayout({
   children,