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/components/auth/register-page.tsx

@@ -0,0 +1,12 @@
+"use client"
+
+import {RegisterForm} from "@/components/auth/register-form"
+import {AuthShell} from "@/components/auth/auth-shell"
+
+export function RegisterPage() {
+  return (
+    <AuthShell wide>
+      <RegisterForm />
+    </AuthShell>
+  )
+}