feat: sync Sidebar and BottomNav, standardize user profile API

Align Sidebar & BottomNav menus, remove "Search", add user profile mock data, implement /api/users, add FilterDrawer, complete Section, ProfileHeader, MetricsRFM components

Co-authored-by: null <4804959+fnvtk@users.noreply.github.com>

app/api/system-status/route.ts

@@ -1,21 +1,15 @@
 import { type NextRequest, NextResponse } from "next/server"
 import { getMindsDBConnector } from "@/lib/mindsdb-connector"
-import { getIntelligentSearchService } from "@/services/intelligent-search-service"
 
 export async function GET(request: NextRequest) {
   try {
     const mindsDB = getMindsDBConnector()
-    const searchService = getIntelligentSearchService()
-
-    // 获取系统状态
-    const systemStatus = await mindsDB.getSystemStatus()
-    const searchStats = searchService.getSearchStats()
+    const status = await mindsDB.getSystemStatus()
 
     return NextResponse.json({
-      system: systemStatus,
-      search: searchStats,
+      success: true,
+      status,
       timestamp: new Date().toISOString(),
-      version: process.env.APP_VERSION || "1.0.0",
     })
   } catch (error) {
     console.error("系统状态API错误:", error)