fix: allow PUT method on snapshot config endpoint

The CLI sends PUT for config updates but the route only exported POST,
causing a 405 Method Not Allowed error.

Author: fullstackjam

src/routes/api/configs/from-snapshot/+server.ts

@@ -188,3 +188,6 @@ export const POST: RequestHandler = async ({ platform, cookies, request }) => {
 		packages: createdPackages
 	}, { status: 201 });
 };
+
+// The CLI sends PUT for updates — route to the same handler.
+export const PUT: RequestHandler = POST;