feat: extract shop from mp/shop — initial libreshop/shop

Source moved verbatim from mp/shop/ on 2026-04-29; mp was the first
concrete adapter consuming the libreshop toolkit. Builds and publishes
git.librete.ch/libreshop/shop on every main / v* push via the standard
.gitea/workflows/build.yml shared across libreshop components.

server/middleware/redirects.ts

@@ -0,0 +1,29 @@
+// 301 Redirects for old URLs to new semantic URLs
+// These redirects ensure SEO continuity and prevent broken links
+
+const REDIRECTS: Record<string, string> = {
+	// Website pages (old ID-based URLs)
+	"/website/19": "/about",
+	"/website/20": "/oeffnungszeiten",
+	"/website/21": "/anfahrt",
+
+	// Legal pages (old /legal/[content] URLs)
+	"/legal/imprint": "/impressum",
+	"/legal/contact": "/kontakt",
+	"/legal/terms": "/agb",
+	"/legal/privacy": "/datenschutz",
+	"/legal/delivery": "/versand",
+	"/legal/payment": "/zahlung",
+};
+
+export default defineEventHandler((event) => {
+	const path = event.path;
+
+	// Check if the current path matches any redirect
+	const redirectTo = REDIRECTS[path];
+
+	if (redirectTo) {
+		// 301 Permanent Redirect
+		return sendRedirect(event, redirectTo, 301);
+	}
+});