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/(main)/settings/layout.tsx

@@ -0,0 +1,11 @@
+"use client"
+
+import {RequireAuth} from "@/components/auth/require-auth"
+
+export default function SettingsLayout({
+  children,
+}: {
+  children: React.ReactNode
+}) {
+  return <RequireAuth>{children}</RequireAuth>
+}