feat(frontend): 步骤 6.3 — 类型定义与 API 配置

frontend/src/config/api-config.ts

@@ -0,0 +1,7 @@
+export const API_CONFIG = {
+  // 优先使用运行时注入的 window.__ENV，其次使用构建时的环境变量，最后回退到默认值
+  BASE_URL:
+    (typeof window !== "undefined" && window.__ENV?.NEXT_PUBLIC_API_BASE_URL)
+      ? window.__ENV.NEXT_PUBLIC_API_BASE_URL
+      : (process.env.NEXT_PUBLIC_API_BASE_URL || "http://localhost:8091/api/v1"),
+};

frontend/src/types/api.ts

@@ -0,0 +1,31 @@
+export interface Response<T> {
+    code: string;
+    info: string;
+    data: T;
+}
+
+export interface AiAgentConfigResponseDTO {
+    agentId: string;
+    agentName: string;
+    agentDesc: string;
+}
+
+export interface CreateSessionRequestDTO {
+    agentId: string;
+    userId: string;
+}
+
+export interface CreateSessionResponseDTO {
+    sessionId: string;
+}
+
+export interface ChatRequestDTO {
+    agentId: string;
+    userId: string;
+    sessionId: string;
+    message: string;
+}
+
+export interface ChatResponseDTO {
+    content: string;
+}

frontend/src/types/env.d.ts

@@ -0,0 +1,9 @@
+declare global {
+  interface Window {
+    __ENV?: {
+      NEXT_PUBLIC_API_BASE_URL: string;
+    };
+  }
+}
+
+export {};