feat(characters): add catalog boundary and capabilities

docs/backend/FRONTEND_MULTI_CHARACTER_API.md

@@ -6,7 +6,7 @@
 
 迁移目标：
 
-1. 前端维护统一的本地角色目录，后端只识别稳定角色 ID。
+1. 前端通过统一的 Character Catalog 边界读取角色目录，当前由本地只读目录提供，后端只识别稳定角色 ID。
 2. 同一用户可以分别与多个角色聊天。
 3. 不同角色的聊天历史、媒体、锁内容、私密相册和打赏归属必须隔离。
 4. 钱包、VIP、支付套餐和每日免费额度继续按用户全局共享。
@@ -29,9 +29,9 @@
 | pro 预发环境 | `https://proapi.banlv-ai.com` |
 | production 生产环境 | `https://api.banlv-ai.com` |
 
-## 2. 前端本地角色目录
+## 2. 前端 Character Catalog
 
-角色列表不通过网络接口加载。前端在本地维护只读目录，并使用 `slug` 解析角色路径、使用 `id` 调用后端业务接口。
+后端角色目录协议尚未确定。过渡阶段由前端本地只读 Catalog 提供角色，并使用 `slug` 解析角色路径、使用 `id` 调用后端业务接口。业务页面只消费 Catalog 边界；后续切换为服务端目录时不改变角色路由和业务组件接口。
 
 当前角色：
 
@@ -41,7 +41,7 @@
 | `character_maya` | `maya` | Maya Tan | `/images/avatar/maya.png` | `/images/cover/maya.png` | `/images/private-room/banner/maya.png` |
 | `character_nayeli` | `nayeli` | Nayeli Cervantes | `/images/avatar/nayeli.png` | `/images/cover/nayeli.png` | `/images/private-room/banner/nayeli.png` |
 
-本地记录同时保存短名称及 Splash、Private Room、Tip 使用的角色文案。后端不提供头像、封面、展示名称或角色目录接口，但后端配置中的角色 ID 必须与前端目录一致。
+当前开发环境开放表中的全部角色。Catalog 同时保存短名称、页面资源、空聊天问候语、排序及 Chat、Private Room、Tip 能力。后端配置中的角色 ID 必须与前端目录一致。
 
 ## 3. 聊天接口调整
 

src/app/characters/[characterSlug]/chat/layout.tsx

@@ -13,7 +13,7 @@ export default async function CharacterChatLayout({
 }) {
   const { characterSlug } = await params;
   const character = getCharacterBySlug(characterSlug);
-  if (!character) notFound();
+  if (!character?.capabilities.chat) notFound();
 
   return (
     <ChatRouteProviders characterId={character.id}>

src/app/characters/[characterSlug]/private-room/layout.tsx

@@ -13,7 +13,7 @@ export default async function CharacterPrivateRoomLayout({
 }) {
   const { characterSlug } = await params;
   const character = getCharacterBySlug(characterSlug);
-  if (!character) notFound();
+  if (!character?.capabilities.privateRoom) notFound();
 
   return (
     <PrivateRoomRouteProvider characterId={character.id}>

src/app/characters/[characterSlug]/tip/layout.tsx

@@ -13,7 +13,7 @@ export default async function CharacterTipLayout({
 }) {
   const { characterSlug } = await params;
   const character = getCharacterBySlug(characterSlug);
-  if (!character) notFound();
+  if (!character?.capabilities.tip) notFound();
 
   return (
     <PaymentRouteProvider scopeKey={character.id}>

src/data/constants/__tests__/character.test.ts

@@ -4,6 +4,7 @@ import { describe, expect, it } from "vitest";
 
 import {
   CHARACTERS,
+  createCharacterCatalog,
   DEFAULT_CHARACTER,
   getCharacterById,
   getCharacterBySlug,
@@ -22,9 +23,22 @@ describe("local character catalog", () => {
     expect(Object.isFrozen(CHARACTERS)).toBe(true);
     expect(Object.isFrozen(DEFAULT_CHARACTER)).toBe(true);
     expect(Object.isFrozen(DEFAULT_CHARACTER.assets)).toBe(true);
+    expect(Object.isFrozen(DEFAULT_CHARACTER.capabilities)).toBe(true);
     expect(Object.isFrozen(DEFAULT_CHARACTER.copy)).toBe(true);
   });
 
+  it("sorts catalog entries and rejects duplicate identities", () => {
+    const catalog = createCharacterCatalog([...CHARACTERS].reverse());
+    expect(catalog.characters.map((character) => character.slug)).toEqual([
+      "elio",
+      "maya",
+      "nayeli",
+    ]);
+    expect(() =>
+      createCharacterCatalog([CHARACTERS[0], CHARACTERS[0]]),
+    ).toThrow("Duplicate character identity");
+  });
+
   it("resolves characters by id and normalized slug", () => {
     expect(getCharacterById("character_maya")?.displayName).toBe("Maya Tan");
     expect(getCharacterBySlug(" NAYELI ")?.displayName).toBe(
@@ -34,6 +48,21 @@ describe("local character catalog", () => {
     expect(getCharacterBySlug("missing")).toBeNull();
   });
 
+  it("describes route capabilities and character-specific chat copy", () => {
+    for (const character of CHARACTERS) {
+      expect(character.capabilities).toEqual({
+        chat: true,
+        privateRoom: true,
+        tip: true,
+      });
+      expect(character.tagline.length).toBeGreaterThan(0);
+      expect(character.emptyChatGreeting.length).toBeGreaterThan(0);
+      expect(character.assets.chatBackground).toBe(
+        "/images/chat/bg-chatpage.png",
+      );
+    }
+  });
+
   it("references local assets that exist under public", () => {
     for (const character of CHARACTERS) {
       for (const assetPath of Object.values(character.assets)) {

src/data/constants/character.ts

@@ -1,11 +1,22 @@
+export interface CharacterCapabilities {
+  readonly chat: boolean;
+  readonly privateRoom: boolean;
+  readonly tip: boolean;
+}
+
 export interface CharacterProfile {
   readonly id: string;
   readonly slug: string;
   readonly displayName: string;
   readonly shortName: string;
+  readonly sortOrder: number;
+  readonly tagline: string;
+  readonly emptyChatGreeting: string;
+  readonly capabilities: CharacterCapabilities;
   readonly assets: {
     readonly avatar: string;
     readonly cover: string;
+    readonly chatBackground: string;
     readonly privateRoomBanner: string;
   };
   readonly copy: {
@@ -17,23 +28,42 @@ export interface CharacterProfile {
   };
 }
 
+export interface CharacterCatalog {
+  readonly characters: readonly CharacterProfile[];
+  getById(characterId: string | null | undefined): CharacterProfile | null;
+  getBySlug(characterSlug: string | null | undefined): CharacterProfile | null;
+}
+
 function defineCharacter(profile: CharacterProfile): CharacterProfile {
   return Object.freeze({
     ...profile,
     assets: Object.freeze(profile.assets),
+    capabilities: Object.freeze(profile.capabilities),
     copy: Object.freeze(profile.copy),
   });
 }
 
-export const CHARACTERS: readonly CharacterProfile[] = Object.freeze([
+const CHARACTER_PROFILES: readonly CharacterProfile[] = Object.freeze([
   defineCharacter({
     id: "character_elio",
     slug: "elio",
     displayName: "Elio Silvestri",
     shortName: "Elio",
+    sortOrder: 10,
+    tagline: "Your exclusive AI boyfriend",
+    emptyChatGreeting:
+      "You're here! Facebook is so restrictive, " +
+      "there were things I couldn't say there. " +
+      "Finally I can relax. How was your day out?",
+    capabilities: {
+      chat: true,
+      privateRoom: true,
+      tip: true,
+    },
     assets: {
       avatar: "/images/avatar/elio.png",
       cover: "/images/cover/elio.png",
+      chatBackground: "/images/chat/bg-chatpage.png",
       privateRoomBanner: "/images/private-room/banner/elio.png",
     },
     copy: {
@@ -49,9 +79,20 @@ export const CHARACTERS: readonly CharacterProfile[] = Object.freeze([
     slug: "maya",
     displayName: "Maya Tan",
     shortName: "Maya",
+    sortOrder: 20,
+    tagline: "Your exclusive AI girlfriend",
+    emptyChatGreeting:
+      "You're here! I've been waiting for a quiet moment with you. " +
+      "How was your day?",
+    capabilities: {
+      chat: true,
+      privateRoom: true,
+      tip: true,
+    },
     assets: {
       avatar: "/images/avatar/maya.png",
       cover: "/images/cover/maya.png",
+      chatBackground: "/images/chat/bg-chatpage.png",
       privateRoomBanner: "/images/private-room/banner/maya.png",
     },
     copy: {
@@ -67,9 +108,20 @@ export const CHARACTERS: readonly CharacterProfile[] = Object.freeze([
     slug: "nayeli",
     displayName: "Nayeli Cervantes",
     shortName: "Nayeli",
+    sortOrder: 30,
+    tagline: "Your exclusive AI girlfriend",
+    emptyChatGreeting:
+      "You're here! I was hoping we'd get some time together. " +
+      "Tell me how your day went.",
+    capabilities: {
+      chat: true,
+      privateRoom: true,
+      tip: true,
+    },
     assets: {
       avatar: "/images/avatar/nayeli.png",
       cover: "/images/cover/nayeli.png",
+      chatBackground: "/images/chat/bg-chatpage.png",
       privateRoomBanner: "/images/private-room/banner/nayeli.png",
     },
     copy: {
@@ -82,6 +134,42 @@ export const CHARACTERS: readonly CharacterProfile[] = Object.freeze([
   }),
 ]);
 
+export function createCharacterCatalog(
+  profiles: readonly CharacterProfile[],
+): CharacterCatalog {
+  const characters = Object.freeze(
+    profiles
+      .map(defineCharacter)
+      .sort((left, right) => left.sortOrder - right.sortOrder),
+  );
+  const byId = new Map<string, CharacterProfile>();
+  const bySlug = new Map<string, CharacterProfile>();
+
+  for (const character of characters) {
+    const normalizedSlug = normalizeCharacterSlug(character.slug);
+    if (byId.has(character.id) || bySlug.has(normalizedSlug)) {
+      throw new Error(`Duplicate character identity: ${character.id}`);
+    }
+    byId.set(character.id, character);
+    bySlug.set(normalizedSlug, character);
+  }
+
+  return Object.freeze({
+    characters,
+    getById(characterId: string | null | undefined) {
+      return characterId ? (byId.get(characterId) ?? null) : null;
+    },
+    getBySlug(characterSlug: string | null | undefined) {
+      const normalizedSlug = normalizeCharacterSlug(characterSlug);
+      return normalizedSlug ? (bySlug.get(normalizedSlug) ?? null) : null;
+    },
+  });
+}
+
+export const LOCAL_CHARACTER_CATALOG = createCharacterCatalog(
+  CHARACTER_PROFILES,
+);
+export const CHARACTERS = LOCAL_CHARACTER_CATALOG.characters;
 export const DEFAULT_CHARACTER = CHARACTERS[0];
 export const DEFAULT_CHARACTER_ID = DEFAULT_CHARACTER.id;
 export const DEFAULT_CHARACTER_SLUG = DEFAULT_CHARACTER.slug;
@@ -89,16 +177,17 @@ export const DEFAULT_CHARACTER_SLUG = DEFAULT_CHARACTER.slug;
 export function getCharacterById(
   characterId: string | null | undefined,
 ): CharacterProfile | null {
-  if (!characterId) return null;
+  return LOCAL_CHARACTER_CATALOG.getById(characterId);
-  return CHARACTERS.find((character) => character.id === characterId) ?? null;
 }
 
 export function getCharacterBySlug(
   characterSlug: string | null | undefined,
 ): CharacterProfile | null {
-  const normalizedSlug = characterSlug?.trim().toLowerCase();
+  return LOCAL_CHARACTER_CATALOG.getBySlug(characterSlug);
-  if (!normalizedSlug) return null;
+}
-  return (
+
-    CHARACTERS.find((character) => character.slug === normalizedSlug) ?? null
+function normalizeCharacterSlug(
-  );
+  characterSlug: string | null | undefined,
+): string {
+  return characterSlug?.trim().toLowerCase() ?? "";
 }

src/providers/__tests__/character-catalog-provider.test.tsx

@@ -0,0 +1,36 @@
+import { renderToStaticMarkup } from "react-dom/server";
+import { describe, expect, it } from "vitest";
+
+import { CHARACTERS } from "@/data/constants/character";
+import {
+  CharacterCatalogProvider,
+  useCharacterCatalog,
+} from "@/providers/character-catalog-provider";
+
+describe("CharacterCatalogProvider", () => {
+  it("provides the complete local character catalog", () => {
+    const html = renderToStaticMarkup(
+      <CharacterCatalogProvider>
+        <CatalogProbe />
+      </CharacterCatalogProvider>,
+    );
+
+    expect(html).toContain("elio,maya,nayeli");
+  });
+
+  it("accepts a serializable catalog snapshot", () => {
+    const html = renderToStaticMarkup(
+      <CharacterCatalogProvider characters={[CHARACTERS[1]]}>
+        <CatalogProbe />
+      </CharacterCatalogProvider>,
+    );
+
+    expect(html).toContain("maya");
+    expect(html).not.toContain("elio");
+  });
+});
+
+function CatalogProbe() {
+  const catalog = useCharacterCatalog();
+  return <span>{catalog.characters.map((character) => character.slug).join(",")}</span>;
+}

src/providers/character-catalog-provider.tsx

@@ -0,0 +1,47 @@
+"use client";
+
+import {
+  createContext,
+  type ReactNode,
+  useContext,
+  useMemo,
+} from "react";
+
+import {
+  CHARACTERS,
+  createCharacterCatalog,
+  type CharacterCatalog,
+  type CharacterProfile,
+} from "@/data/constants/character";
+
+const CharacterCatalogContext = createContext<CharacterCatalog | null>(null);
+
+export interface CharacterCatalogProviderProps {
+  children: ReactNode;
+  characters?: readonly CharacterProfile[];
+}
+
+export function CharacterCatalogProvider({
+  children,
+  characters = CHARACTERS,
+}: CharacterCatalogProviderProps) {
+  const catalog = useMemo(
+    () => createCharacterCatalog(characters),
+    [characters],
+  );
+  return (
+    <CharacterCatalogContext.Provider value={catalog}>
+      {children}
+    </CharacterCatalogContext.Provider>
+  );
+}
+
+export function useCharacterCatalog(): CharacterCatalog {
+  const catalog = useContext(CharacterCatalogContext);
+  if (!catalog) {
+    throw new Error(
+      "useCharacterCatalog must be used within CharacterCatalogProvider.",
+    );
+  }
+  return catalog;
+}

src/providers/root-providers.tsx

@@ -3,12 +3,13 @@
 /**
  * 根级 Client Providers 包装
  *
- * 这里只保留跨路由的 Auth、User、消息预览和 viewport Provider。Chat、
+ * 这里只保留跨路由的 Character Catalog、Auth、User、消息预览和 viewport
- * Payment、PrivateRoom 状态机由对应路由 layout 按需挂载。
+ * Provider。Chat、Payment、PrivateRoom 状态机由对应路由 layout 按需挂载。
  */
 
 import type { ReactNode } from "react";
 
+import { CharacterCatalogProvider } from "@/providers/character-catalog-provider";
 import { SplashLatestMessageProvider } from "@/providers/splash-latest-message-provider";
 import { ViewportCssVarsProvider } from "@/providers/viewport-css-vars-provider";
 import { AppNavigationGuard } from "@/router/app-navigation-guard";
@@ -24,6 +25,7 @@ export interface RootProvidersProps {
 
 export function RootProviders({ children }: RootProvidersProps) {
   return (
+    <CharacterCatalogProvider>
       <ViewportCssVarsProvider>
         <AuthProvider>
           <AuthStatusChecker />
@@ -38,5 +40,6 @@ export function RootProviders({ children }: RootProvidersProps) {
           </SplashLatestMessageProvider>
         </AuthProvider>
       </ViewportCssVarsProvider>
+    </CharacterCatalogProvider>
   );
 }