refactor(repo): consolidate openflare-server to root and move subprojects to internal/apps

- Merge all files inside openflare-server to the repository root directory.
- Relocate agent, relay, and flared subprojects from internal/ to internal/apps/.
- Combine docker-compose files and update build context paths to root.
- Update GitHub workflows and Dockerfiles to refer to new directories and package names.
- Rewrite Go package imports across all files.
- Resolve database renew test race condition and clean up docs.

frontend/components/providers/auth-provider.tsx

@@ -0,0 +1,13 @@
+"use client"
+
+import {useUser} from "@/contexts/user-context"
+
+/**
+ * Auth provider bridge hook
+ *
+ * Provides a stable interface for components that use the useAuth() pattern.
+ * Delegates to the canonical UserContext under the hood.
+ */
+export function useAuth() {
+  return useUser()
+}

frontend/components/providers/query-provider.tsx

@@ -0,0 +1,23 @@
+"use client"
+
+import {QueryClient, QueryClientProvider} from "@tanstack/react-query"
+import {useState} from "react"
+
+export function AppQueryProvider({ children }: { children: React.ReactNode }) {
+  const [queryClient] = useState(
+    () =>
+      new QueryClient({
+        defaultOptions: {
+          queries: {
+            staleTime: 30_000,
+            refetchOnWindowFocus: false,
+            retry: 1,
+          },
+        },
+      }),
+  )
+
+  return (
+    <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
+  )
+}

frontend/components/providers/title-updater.tsx

@@ -0,0 +1,34 @@
+"use client"
+
+import {useQuery} from '@tanstack/react-query'
+import {useEffect} from 'react'
+import {ConfigService} from '@/lib/services/config'
+import {usePathname} from 'next/navigation'
+
+export function SiteTitleUpdater() {
+  const pathname = usePathname()
+  const publicConfigQuery = useQuery({
+    queryKey: ["public-config"],
+    queryFn: () => ConfigService.getPublicConfig(),
+  })
+
+  useEffect(() => {
+    const siteName = publicConfigQuery.data?.site_name || "OpenFlare"
+
+    // Determine the page suffix based on path
+    let suffix = ""
+    if (pathname === "/login") {
+      suffix = " - 登录"
+    } else if (pathname === "/register") {
+      suffix = " - 注册"
+    } else if (pathname.startsWith("/admin")) {
+      suffix = " - 后台管理"
+    } else if (pathname === "/") {
+      suffix = " - 总览"
+    }
+
+    document.title = `${siteName}${suffix}`
+  }, [publicConfigQuery.data?.site_name, pathname])
+
+  return null
+}