feat: add MCP tool integration

frontend/src/lib/api.ts

@@ -347,19 +347,35 @@ export type HttpToolDefinition = {
   };
 };
 
+export type McpToolDefinition = {
+  schemaVersion: number;
+  type: "mcp";
+  config: {
+    remoteToolName: string;
+    inputSchema: Record<string, unknown>;
+    schemaHash: string;
+    dynamicVariableAssignments: Record<string, string>;
+  };
+};
+
 export type Tool = {
   id: string;
   name: string;
   functionName: string;
-  type: "end_call" | "http";
+  type: "end_call" | "http" | "mcp";
   description: string;
-  definition: EndCallToolDefinition | HttpToolDefinition;
+  definition: EndCallToolDefinition | HttpToolDefinition | McpToolDefinition;
   secrets: Record<string, unknown>;
   status: ToolStatus;
+  mcpServerId?: string | null;
+  remoteToolName?: string | null;
   updatedAt?: string | null;
 };
 
-export type ToolUpsert = Omit<Tool, "id" | "type" | "updatedAt">;
+export type ToolUpsert = Omit<
+  Tool,
+  "id" | "type" | "remoteToolName" | "updatedAt"
+>;
 
 export const toolsApi = {
   list: () => request<Tool[]>("/api/tools"),
@@ -379,6 +395,55 @@ export const toolsApi = {
     request<Tool>(`/api/tools/${id}/duplicate`, { method: "POST" }),
 };
 
+export type McpServer = {
+  id: string;
+  name: string;
+  description: string;
+  transport: "streamable_http";
+  url: string;
+  timeoutSeconds: number;
+  headers: Record<string, string>;
+  secretHeaders: Record<string, string>;
+  status: ToolStatus;
+  toolCount: number;
+  lastSyncedAt?: string | null;
+  updatedAt?: string | null;
+};
+
+export type McpServerUpsert = Omit<
+  McpServer,
+  "id" | "toolCount" | "lastSyncedAt" | "updatedAt"
+>;
+
+export type McpSyncResult = {
+  server: McpServer;
+  created: number;
+  updated: number;
+  tools: Tool[];
+};
+
+export const mcpServersApi = {
+  list: () => request<McpServer[]>("/api/mcp-servers"),
+  create: (body: McpServerUpsert) =>
+    request<McpServer>("/api/mcp-servers", {
+      method: "POST",
+      body: JSON.stringify(body),
+    }),
+  update: (id: string, body: McpServerUpsert) =>
+    request<McpServer>(`/api/mcp-servers/${id}`, {
+      method: "PUT",
+      body: JSON.stringify(body),
+    }),
+  sync: (id: string) =>
+    request<McpSyncResult>(`/api/mcp-servers/${id}/sync`, {
+      method: "POST",
+    }),
+  remove: (id: string) =>
+    request<{ ok: boolean }>(`/api/mcp-servers/${id}`, {
+      method: "DELETE",
+    }),
+};
+
 // ---------- 知识库 ----------
 export type KnowledgeBase = {
   id: string;