ai改写调用

frontend-web/src/open-canvas/api/rewrite.ts

@@ -1,7 +1,5 @@
 import { apiFetch } from "@/core/api/fetch-client";
-import { env } from "@/env";
-
-const BASE = (env.NEXT_PUBLIC_BACKEND_BASE_URL as string | undefined) ?? "http://localhost:8001";
+import { getBackendBaseURL } from "@/core/config";
 
 export type RewriteAction = "polish" | "expand" | "shorten" | "tone";
 export type RewriteTone =
@@ -12,7 +10,7 @@ export type RewriteTone =
   | "expressive";
 
 export interface RewriteRequest {
-  threadId: string;
+  threadId?: string | null;
   selection: { from: number; to: number; text: string };
   action: RewriteAction;
   tone?: RewriteTone;
@@ -71,7 +69,7 @@ export async function* streamRewrite(
   req: RewriteRequest,
   signal?: AbortSignal,
 ): AsyncGenerator<RewriteStreamEvent> {
-  const res = await apiFetch(`${BASE}/api/writing/rewrite`, {
+  const res = await apiFetch(`${getBackendBaseURL()}/api/writing/rewrite`, {
     method: "POST",
     headers: { "Content-Type": "application/json" },
     body: JSON.stringify(req),