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>

types/ai-assistant.ts

@@ -0,0 +1,36 @@
+export type AnalysisTask = {
+  id: string
+  name: string
+  database: string
+  status: "pending" | "running" | "completed" | "failed"
+  progress: number
+  createdAt: string
+  completedAt?: string
+  reportUrl?: string
+  description?: string
+}
+
+export type DatabaseInfo = {
+  id: string
+  name: string
+  type: string
+  tables: number
+  records: number
+  lastUpdated: string
+}
+
+export type ReportTemplate = {
+  id: string
+  name: string
+  description: string
+  category: string
+  fields: string[]
+}
+
+export type ReportItem = {
+  id: string
+  title: string
+  source: string
+  description: string
+  updatedAt: string
+}