避免abort后创建新的session

src/chat/sessionBridge.ts

@@ -31,6 +31,7 @@ export class ChatSessionBridge {
   // runtime session 仅在单次请求生命周期内有效；线程连续性由 clientSessionId 对应的持久状态承担。
   private readonly activeRuntimeSessions = new Map<string, string>();
   private readonly activeSensitiveContexts = new Map<string, ChatRequestContext>();
+  private readonly abortControllers = new Map<string, AbortController>();
   private readonly toolContextStore = new ToolSessionContextStore();
 
   constructor(private readonly runtime: OpencodeRuntimeAdapter) {}
@@ -89,6 +90,14 @@ export class ChatSessionBridge {
     return this.activeSensitiveContexts.get(sessionScopeKey) ?? null;
   }
 
+  registerAbortController(clientSessionId: string, controller: AbortController) {
+    this.abortControllers.set(clientSessionId, controller);
+  }
+
+  deleteAbortController(clientSessionId: string) {
+    this.abortControllers.delete(clientSessionId);
+  }
+
   async abort(context: {
     clientSessionId?: string;
   }): Promise<SessionBinding | null> {
@@ -144,11 +153,18 @@ export class ChatSessionBridge {
 
   private async abortActiveRuntime(clientSessionId: string) {
     const activeSessionId = this.activeRuntimeSessions.get(clientSessionId);
+    this.activeRuntimeSessions.delete(clientSessionId);
+    this.activeSensitiveContexts.delete(findScopeKey(this.activeSensitiveContexts, clientSessionId));
+
+    const controller = this.abortControllers.get(clientSessionId);
+    if (controller) {
+      this.abortControllers.delete(clientSessionId);
+      controller.abort();
+    }
+
     if (!activeSessionId) {
       return;
     }
-    this.activeRuntimeSessions.delete(clientSessionId);
-    this.activeSensitiveContexts.delete(findScopeKey(this.activeSensitiveContexts, clientSessionId));
     await this.toolContextStore.remove(activeSessionId).catch(() => undefined);
     await this.runtime.abortSession(activeSessionId).catch((error) => {
       logger.warn(