refactor(teacher): retire discussion components and keep text replies

electron/coding-teacher/reply.ts

@@ -0,0 +1,20 @@
+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。';
+}
+
+/** The original response remains available for diagnosis when parsing is incomplete. */
+export function applyTeacherReply(request: TeacherRequest, raw: string): void {
+  const parsed = parseTeacherReply(raw);
+  request.response = parsed.reply;
+  request.suggestedQuestions = parsed.quickReplies;
+  if (parsed.parseError) {
+    request.replyParseError = parsed.parseError;
+    request.unparsedResponse = raw;
+  } else {
+    delete request.replyParseError;
+    delete request.unparsedResponse;
+  }
+}