feat: 优化对话历史功能

frontend/src/lib/api.ts

@@ -104,3 +104,96 @@ export async function logout(
     body: JSON.stringify({ refresh_token: refreshToken }),
   });
 }
+
+// ---- Conversation API ----
+
+export interface ConversationListItem {
+  id: string;
+  title: string;
+  last_message: string;
+  message_count: number;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface ConversationListResponse {
+  conversations: ConversationListItem[];
+  total: number;
+  page: number;
+  size: number;
+}
+
+export interface CreateConversationResponse {
+  id: string;
+  title: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface StoredMessage {
+  id: number;
+  role: string;
+  content: string;
+  tokens_used: number;
+  created_at: string;
+}
+
+export interface MessagesResponse {
+  messages: StoredMessage[];
+  total: number;
+}
+
+export async function listConversations(
+  token: string,
+  page = 1,
+  size = 50
+): Promise<ApiResponse<ConversationListResponse>> {
+  return request<ConversationListResponse>(
+    `/conversations?page=${page}&size=${size}`,
+    { headers: authHeaders(token) }
+  );
+}
+
+export async function createConversation(
+  token: string,
+  config?: Record<string, unknown>
+): Promise<ApiResponse<CreateConversationResponse>> {
+  return request<CreateConversationResponse>("/conversations", {
+    method: "POST",
+    headers: authHeaders(token),
+    body: JSON.stringify(config ? { config } : {}),
+  });
+}
+
+export async function deleteConversation(
+  token: string,
+  id: string
+): Promise<ApiResponse<void>> {
+  return request<void>(`/conversations/${id}`, {
+    method: "DELETE",
+    headers: authHeaders(token),
+  });
+}
+
+export async function renameConversation(
+  token: string,
+  id: string,
+  title: string
+): Promise<ApiResponse<{ message: string }>> {
+  return request<{ message: string }>(`/conversations/${id}`, {
+    method: "PATCH",
+    headers: authHeaders(token),
+    body: JSON.stringify({ title }),
+  });
+}
+
+export async function getConversationMessages(
+  token: string,
+  id: string,
+  limit = 200
+): Promise<ApiResponse<MessagesResponse>> {
+  return request<MessagesResponse>(
+    `/conversations/${id}/messages?limit=${limit}`,
+    { headers: authHeaders(token) }
+  );
+}