feat：初始化业务目录

src/modules/_config/admin-nav-icons.tsx

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+import type { LucideIcon } from "lucide-react";
+import {
+  CalendarClock,
+  LayoutDashboard,
+  LogIn,
+  Settings,
+  ShieldAlert,
+  Ticket,
+  Users,
+  Wallet,
+} from "lucide-react";
+
+import type { AdminNavItem } from "@/modules/_config/admin-nav";
+
+/** 与 {@link AdminNavItem}["segment"] 一一对应 */
+export const adminNavIconBySegment: Record<AdminNavItem["segment"], LucideIcon> =
+  {
+    dashboard: LayoutDashboard,
+    players: Users,
+    draws: CalendarClock,
+    tickets: Ticket,
+    wallet: Wallet,
+    risk: ShieldAlert,
+    settings: Settings,
+  };
+
+export { LogIn };

src/modules/_config/admin-nav.ts

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+/**
+ * 导航与路由的单一事实来源；新增业务模块时先改这里，再增加 `app/admin/(shell)/.../page.tsx`。
+ */
+export const ADMIN_BASE = "/admin" as const;
+
+export type AdminNavItem = {
+  /** 侧边栏文案 */
+  label: string;
+  href: string;
+  /** 对应 `src/modules/<segment>` 目录名 */
+  segment:
+    | "dashboard"
+    | "players"
+    | "draws"
+    | "tickets"
+    | "wallet"
+    | "risk"
+    | "settings";
+};
+
+export const adminShellNavItems: AdminNavItem[] = [
+  { segment: "dashboard", label: "总览", href: "/admin" },
+  { segment: "players", label: "用户", href: "/admin/players" },
+  { segment: "draws", label: "开奖", href: "/admin/draws" },
+  { segment: "tickets", label: "注单 / 票务", href: "/admin/tickets" },
+  { segment: "wallet", label: "钱包", href: "/admin/wallet" },
+  { segment: "risk", label: "风控", href: "/admin/risk" },
+  { segment: "settings", label: "系统设置", href: "/admin/settings" },
+];

src/modules/auth/meta.ts

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+export const authModuleMeta = {
+  segment: "auth",
+  title: "登录",
+  description: "后台登录流程（占位，与侧边栏工作台分离）。",
+} as const;

src/modules/dashboard/meta.ts

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+export const dashboardModuleMeta = {
+  segment: "dashboard",
+  title: "总览",
+  description:
+    "后台仪表盘与接口连通状态；后续可放核心业务指标卡片。",
+} as const;

src/modules/draws/meta.ts

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+export const drawsModuleMeta = {
+  segment: "draws",
+  title: "开奖",
+  description: "期号、开奖结果与时间线（占位）。",
+} as const;

src/modules/players/meta.ts

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+export const playersModuleMeta = {
+  segment: "players",
+  title: "用户",
+  description: "玩家列表、冻结/解冻、账号资料（路由已就绪，待接管理端 API）。",
+} as const;

src/modules/risk/meta.ts

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+export const riskModuleMeta = {
+  segment: "risk",
+  title: "风控",
+  description: "规则、告警与黑名单（占位）。",
+} as const;

src/modules/settings/meta.ts

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+export const settingsModuleMeta = {
+  segment: "settings",
+  title: "系统设置",
+  description: "运营参数与权限（占位）。",
+} as const;

src/modules/tickets/meta.ts

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+export const ticketsModuleMeta = {
+  segment: "tickets",
+  title: "注单 / 票务",
+  description: "订单流、下注明细与退票规则（占位）。",
+} as const;

src/modules/wallet/meta.ts

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+export const walletModuleMeta = {
+  segment: "wallet",
+  title: "钱包",
+  description: "资金流水、充值提现审核（占位）。",
+} as const;