added bunch of stuff

app/api/templates/[id]/export/route.ts

@@ -0,0 +1,31 @@
+import type { NextRequest } from "next/server"
+import { getProfile } from "@/lib/supabase/dal"
+import { buildProject } from "@/modules/templates/export/project"
+import { resolveContent } from "@/modules/templates/lib/content"
+import { getTemplate } from "@/modules/templates/lib/registry"
+import { getVariant } from "@/modules/templates/queries/variants"
+
+// Gespeicherter Stand einer Variante als eigenständiges Next.js-Projekt (ZIP) – nur für Admins
+export async function GET(_request: NextRequest, ctx: RouteContext<"/api/templates/[id]/export">) {
+    const profile = await getProfile()
+    if (profile?.role !== "admin") return Response.json({ error: "Keine Berechtigung." }, { status: 403 })
+
+    const { id } = await ctx.params
+    const variant = await getVariant(id)
+    const def = variant ? getTemplate(variant.template_key) : undefined
+    if (!variant || !def) return Response.json({ error: "Variante nicht gefunden." }, { status: 404 })
+
+    try {
+        const { fileName, zip } = await buildProject(def, resolveContent(def, variant.content), variant.name)
+        return new Response(zip, {
+            headers: {
+                "Content-Type": "application/zip",
+                "Content-Disposition": `attachment; filename="${fileName}"`,
+                "Cache-Control": "no-store",
+            },
+        })
+    } catch (error) {
+        console.error("Template export failed:", error)
+        return Response.json({ error: "Export fehlgeschlagen." }, { status: 500 })
+    }
+}