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/(docs)/docs/api/page.tsx

@@ -0,0 +1,17 @@
+import {LegalPageLayout} from "@/components/common/docs/legal-page-layout";
+import {apiSections, DOCS_LAST_UPDATED} from "@/components/common/docs/api";
+
+export default function ApiDocPage() {
+  return (
+    <LegalPageLayout
+      title="API 接口文档"
+      lastUpdated={DOCS_LAST_UPDATED}
+      sections={apiSections}
+      description={
+        <p className="text-muted-foreground text-sm leading-relaxed">
+          OpenFlare 提供简单、强大的 API 接口，支持多种编程语言和开发环境。通过标准化的 RESTful 接口，您可以轻松地与后端服务进行集成与二次开发。
+        </p>
+      }
+    />
+  );
+}