refactor(repo): replace legacy openflare-server with Wavelet rename

Delete the old monolithic openflare-server implementation and rename
Wavelet/ to openflare-server/ to complete the migration consolidation.
Update CI workflows, agent Dockerfiles, and deployment docs for the new
layout (frontend/, docker/Dockerfile).

openflare-server/frontend/app/(auth)/register/page.tsx

@@ -0,0 +1,10 @@
+import {Suspense} from "react"
+import {RegisterPage} from "@/components/auth/register-page"
+
+export default function Page() {
+  return (
+    <Suspense>
+      <RegisterPage />
+    </Suspense>
+  )
+}