feat(admin): 数据源页转 RAG 运维台 + 支付/模型菜单重组 + 概览升级为仪表盘

后端:
- 新增 POST /admin/kb/search：管理端跨租户检索，支持 mode 指定单路
  (vector/fulltext/graph/hybrid)，不走 scopedKB(否则会被强制锁到调用者
  自己的 space，跨租户排障就没法做了)
- KB 清单补 space_id(检索键是 <space_id>/<name>，缺它前端拼不出 key)

前端:
- 数据源&RAG 页补「检索试验台」：同一 query 并排跑生产链路 + 四路诊断，
  召回不准时能直接定位是向量/分词/图谱哪一环挂了
- 支付拆成「配置 / 订单与对账」两个子页，挂到运维 > 支付 下；
  导航支持二级菜单(NavParent 命中子路由自动展开)
- SettingsPage → ModelConfigPage「模型配置」，模型参数与计费规则合一
- 概览 → 仪表盘：并入计费与用量(UsagePage → UsageSection)，
  去掉系统健康拓扑(与服务状态页重复，同一份 /admin/status 数据)
- 全局隐藏滚动条(保留滚动)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

sundynix-admin/src/routes.tsx

@@ -5,8 +5,7 @@ import { lazy, type ReactNode } from "react";
 
 
 const DashboardPage = lazy(() => import("./pages/DashboardPage").then((m) => ({ default: m.DashboardPage })));
-const UsagePage = lazy(() => import("./pages/UsagePage").then((m) => ({ default: m.UsagePage })));
-const SettingsPage = lazy(() => import("./pages/SettingsPage").then((m) => ({ default: m.SettingsPage })));
+const ModelConfigPage = lazy(() => import("./pages/ModelConfigPage").then((m) => ({ default: m.ModelConfigPage })));
 const DatasourcesPage = lazy(() => import("./pages/DatasourcesPage").then((m) => ({ default: m.DatasourcesPage })));
 const StatusPage = lazy(() => import("./pages/StatusPage").then((m) => ({ default: m.StatusPage })));
 const TasksPage = lazy(() => import("./pages/TasksPage").then((m) => ({ default: m.TasksPage })));
@@ -15,52 +14,33 @@ const TenantsPage = lazy(() => import("./pages/TenantsPage").then((m) => ({ defa
 const GuardrailsPage = lazy(() => import("./pages/GuardrailsPage").then((m) => ({ default: m.GuardrailsPage })));
 const PromptsPage = lazy(() => import("./pages/PromptsPage").then((m) => ({ default: m.PromptsPage })));
 const AuditPage = lazy(() => import("./pages/AuditPage").then((m) => ({ default: m.AuditPage })));
+const PaymentConfigPage = lazy(() => import("./pages/PaymentConfigPage").then((m) => ({ default: m.PaymentConfigPage })));
+const PaymentOrdersPage = lazy(() => import("./pages/PaymentOrdersPage").then((m) => ({ default: m.PaymentOrdersPage })));
 const SpacesPage = lazy(() => import("./pages/SpacesPage").then((m) => ({ default: m.SpacesPage })));
 
 export interface RouteDef {
   path: string;
   label: string;
   group: string;
+  /** 二级菜单名。同 group 内 parent 相同的若干条会聚成一个可展开子菜单（如 运维 > 支付 > 配置/订单与对账）。 */
+  parent?: string;
   ready?: boolean;
   element: ReactNode;
 }
 
+/** 侧栏一个节点：要么是单条路由，要么是带子项的可展开二级菜单。 */
+export type NavNode =
+  | { kind: "item"; route: RouteDef }
+  | { kind: "parent"; label: string; items: RouteDef[] };
+
 export const routes: RouteDef[] = [
   {
     path: "dashboard",
-    label: "概览",
+    label: "仪表盘",
     group: "分析",
     ready: true,
     element: <DashboardPage />,
   },
-  {
-    path: "usage",
-    label: "计费 & 用量",
-    group: "分析",
-    ready: true,
-    element: <UsagePage />,
-  },
-  {
-    path: "settings",
-    label: "系统配置",
-    group: "配置",
-    ready: true,
-    element: <SettingsPage />,
-  },
-  {
-    path: "datasources",
-    label: "数据源 & RAG",
-    group: "配置",
-    ready: true,
-    element: <DatasourcesPage />,
-  },
-  {
-    path: "prompts",
-    label: "提示词",
-    group: "配置",
-    ready: true,
-    element: <PromptsPage />,
-  },
   {
     path: "status",
     label: "服务状态",
@@ -89,6 +69,43 @@ export const routes: RouteDef[] = [
     ready: true,
     element: <AuditPage />,
   },
+  {
+    path: "models",
+    label: "模型配置",
+    group: "运维",
+    ready: true,
+    element: <ModelConfigPage />,
+  },
+  {
+    path: "datasources",
+    label: "数据源 & RAG",
+    group: "运维",
+    ready: true,
+    element: <DatasourcesPage />,
+  },
+  {
+    path: "prompts",
+    label: "提示词",
+    group: "运维",
+    ready: true,
+    element: <PromptsPage />,
+  },
+  {
+    path: "payment/config",
+    label: "配置",
+    group: "运维",
+    parent: "支付",
+    ready: true,
+    element: <PaymentConfigPage />,
+  },
+  {
+    path: "payment/orders",
+    label: "订单与对账",
+    group: "运维",
+    parent: "支付",
+    ready: true,
+    element: <PaymentOrdersPage />,
+  },
   {
     path: "tenants",
     label: "租户 & 用户",
@@ -115,15 +132,22 @@ export const routes: RouteDef[] = [
 export const defaultPath = "dashboard";
 
 // 派生分组导航（保持注册顺序）。
-export function navGroups(): Array<{ group: string; items: RouteDef[] }> {
-  const out: Array<{ group: string; items: RouteDef[] }> = [];
+export function navGroups(): Array<{ group: string; nodes: NavNode[] }> {
+  const out: Array<{ group: string; nodes: NavNode[] }> = [];
   for (const r of routes) {
     let g = out.find((x) => x.group === r.group);
     if (!g) {
-      g = { group: r.group, items: [] };
+      g = { group: r.group, nodes: [] };
       out.push(g);
     }
-    g.items.push(r);
+    if (!r.parent) {
+      g.nodes.push({ kind: "item", route: r });
+      continue;
+    }
+    // 同 parent 的归到同一个可展开节点（首次出现决定它在组内的位置）。
+    const exist = g.nodes.find((n): n is Extract<NavNode, { kind: "parent" }> => n.kind === "parent" && n.label === r.parent);
+    if (exist) exist.items.push(r);
+    else g.nodes.push({ kind: "parent", label: r.parent, items: [r] });
   }
   return out;
 }