fix(pi): retain ownership for uncertain mutations

electron/coding-runtime/conversation-service.ts

@@ -25,6 +25,7 @@ const MAX_ATTACHMENTS = 16;
 const MAX_ACCEPTANCES = 512;
 const REQUEST_ID_PATTERN = /^[A-Za-z0-9][A-Za-z0-9._:-]{0,127}$/;
 const ATTACHMENT_ID_PATTERN = /^[A-Za-z0-9-]{1,64}$/;
+const REQUEST_UNCERTAIN_MESSAGE = '请求确认延迟，可能仍在执行。请等待结果，或中止/恢复后再重试。';
 
 export class CodingConversationServiceError extends Error {
   constructor(
@@ -442,8 +443,13 @@ export class CodingConversationService {
     try {
       selected = await this.runtime.validateModel(model);
     } catch (error) { runtimeError(error); }
+    await this.ensurePrepared(conversationId);
+    let snapshot: ConversationSnapshot;
+    try {
+      snapshot = await this.runtime.getSnapshot(conversationId);
+    } catch (error) { runtimeError(error); }
+    this.assertSnapshotAllowsMutation(snapshot);
     if (conversation.modelResolution === 'resolved' && conversation.model) {
-      await this.ensurePrepared(conversationId);
       let state: ConversationModelState;
       try {
         state = await this.runtime.setModel({
@@ -499,6 +505,7 @@ export class CodingConversationService {
     } catch (error) {
       runtimeError(error);
     }
+    this.assertSnapshotAllowsMutation(sourceSnapshot);
     const sourceNode = sourceSnapshot.nodes.find((node) => (
       node.kind === 'message'
       && node.sourceEntryId === entryId
@@ -696,6 +703,16 @@ export class CodingConversationService {
     }
   }
 
+  private assertSnapshotAllowsMutation(snapshot: ConversationSnapshot): void {
+    if (snapshot.run.error?.code !== 'CODING_REQUEST_UNCERTAIN') return;
+    if (!['queued', 'running', 'retrying', 'compacting', 'aborting'].includes(snapshot.run.status)) return;
+    throw new CodingConversationServiceError(
+      409,
+      'CODING_REQUEST_UNCERTAIN',
+      REQUEST_UNCERTAIN_MESSAGE,
+    );
+  }
+
   private async archiveSession(projectId: string, sessionKey: string | undefined): Promise<void> {
     if (!sessionKey) return;
     if (!this.options.archiveSession) {