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>

components/user-portrait/mobile/interactions-list.tsx

@@ -0,0 +1,27 @@
+"use client"
+
+import { MessageSquareMore } from 'lucide-react'
+
+export type Interaction = { id: string; type: string; time: string; note?: string }
+
+export default function InteractionsList({ items }: { items: Interaction[] }) {
+  if (!items?.length) return <div className="text-sm text-muted-foreground">暂无互动记录</div>
+  return (
+    <ul className="divide-y">
+      {items.map((i) => (
+        <li key={i.id} className="py-2 flex items-start gap-3">
+          <div className="mt-0.5">
+            <MessageSquareMore className="h-4 w-4 text-slate-500" />
+          </div>
+          <div className="min-w-0">
+            <div className="text-sm font-medium">{i.type}</div>
+            {!!i.note && <div className="text-sm text-slate-600">{i.note}</div>}
+            <div className="text-xs text-muted-foreground">
+              {new Date(i.time).toLocaleString("zh-CN")}
+            </div>
+          </div>
+        </li>
+      ))}
+    </ul>
+  )
+}