fix: abort creation chat sse on result page

src/services/aiTypes.ts

@@ -52,6 +52,7 @@ export interface StoryRequestOptions {
 
 export interface TextStreamOptions {
   onUpdate?: (text: string) => void;
+  signal?: AbortSignal;
 }
 
 export interface CustomWorldSceneImageRequest {

src/services/rpg-creation/rpgCreationAgentClient.ts

@@ -66,6 +66,7 @@ export async function streamRpgCreationMessage(
     `/api/runtime${RPG_AGENT_API_BASE}/${encodeURIComponent(sessionId)}/messages/stream`,
     payload,
     '发送共创消息失败',
+    options.signal,
   );
 
   return readCreationAgentSessionFromSse<RpgAgentSessionSnapshot>(response, {

src/services/rpg-creation/rpgCreationRequestHelpers.ts

@@ -21,11 +21,13 @@ export async function openRpgCreationSsePost(
   url: string,
   payload: unknown,
   fallbackMessage: string,
+  signal?: AbortSignal,
 ) {
   const response = await fetchWithApiAuth(url, {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
     body: JSON.stringify(payload),
+    signal,
   });
 
   if (!response.ok) {