fix: preserve complete consultation replies and recover retained history

electron/coding-teacher/reply.ts

@@ -2,7 +2,7 @@ import type { TeacherRequest } from '../../shared/coding-teacher';
 import { parseTeacherReply } from '../../shared/teacher-reply';
 
 export function teacherReplyInstructions(): string {
-  return '本轮界面接收一个 JSON 对象 {"reply":string,"quickReplies":string[]}。reply 是回复正文，可使用 Markdown；quickReplies 是可选的后续回复建议，没有建议时用空数组。只使用这两个字段。依据已配置职责帮助学生整理想法、理解关系、承接已确认的共识；区分学生已确认内容与智能体建议、待定想法。回复的语言、风格、长度、前缀和建议内容遵循当前智能体的云端配置。';
+  return '本轮界面接收一个 JSON 对象 {"reply":string,"quickReplies":string[]}。reply 是回复正文，可使用 Markdown；quickReplies 是可选的后续回复建议，没有建议时用空数组。只使用这两个字段。字符串中的英文双引号、反斜杠和换行必须按 JSON 规则转义，确保整个对象是合法 JSON。依据已配置职责帮助学生整理想法、理解关系、承接已确认的共识；区分学生已确认内容与智能体建议、待定想法。回复的语言、风格、长度、前缀和建议内容遵循当前智能体的云端配置。';
 }
 
 /** The original response remains available for diagnosis when parsing is incomplete. */
@@ -10,11 +10,14 @@ export function applyTeacherReply(request: TeacherRequest, raw: string): void {
   const parsed = parseTeacherReply(raw);
   request.response = parsed.reply;
   request.suggestedQuestions = parsed.quickReplies;
+  if (parsed.incomplete) request.replyIncomplete = true;
+  else delete request.replyIncomplete;
   if (parsed.parseError) {
     request.replyParseError = parsed.parseError;
-    request.unparsedResponse = raw;
   } else {
     delete request.replyParseError;
-    delete request.unparsedResponse;
+    delete request.discussionError;
   }
+  if (parsed.parseError || parsed.recovered) request.unparsedResponse = raw;
+  else delete request.unparsedResponse;
 }