fix: preserve complete consultation replies and recover retained history

tests/e2e/fixtures/teacher-reply-api.ts

@@ -1,5 +1,6 @@
 // Deterministic responses for layout/interaction tests only; never imported by the app.
 import type { TeacherDefinition, TeacherTopic, TeacherSend } from '../../../shared/coding-teacher';
+import { parseTeacherReply } from '../../../shared/teacher-reply';
 const definition: TeacherDefinition = { schema_version: 1, teacher_id: 'coding-teacher', name: '麦洛智能体', description: '', avatar_id: 'avatar-01', welcome_message: '', suggested_questions: [], system_prompt: '测试', skills: [], model: { model_id: 'fixture', reasoning_choice: { mode: 'default' } }, limits: { max_input_tokens: 8000, max_output_tokens: 1500 } };
 const samples: Record<string, unknown> = {
   ideas: { kind: 'ideas', title: '我的小狗世界', items: [{ id: 'dog', text: '养一只自己的小狗', state: 'kept' }, { id: 'breed', parentId: 'dog', text: '是一只柯基', state: 'kept' }, { id: 'garden', text: '有一片可以种东西的花园', state: 'kept' }, { id: 'food', parentId: 'garden', text: '种出来的东西可以喂小狗', state: 'suggested' }] },
@@ -10,6 +11,17 @@ const samples: Record<string, unknown> = {
 const scenario = new URLSearchParams(location.search).get('kind') ?? 'ideas';
 let current: TeacherTopic = { schemaVersion: 1, revision: 1, id: 'discussion-fixture', accountId: 'fixture', projectId: 'fixture', sourceConversationId: 'project', definition, version: 1, createdAt: 'now', updatedAt: 'now', requests: Array.from({ length: 8 }, (_, i) => ({ id: `r${i}`, text: i === 7 ? '我还没想好，我们边聊边想。' : '我希望这个游戏更有意思。', references: [], createdAt: 'now', sourceCursor: { workerGeneration: 0, seq: i }, sourceCapturedAt: 'now', includedSourceMessageIds: [], omittedMessages: 0, status: 'completed', response: i === 7 ? '可以，我们先把已经想到的放在一起。哪里还不确定，就留着继续聊。' : '先从你最在意的一个小地方开始想。', ...(i === 7 ? { suggestedQuestions: ['有什么好玩的想法？'] } : {}) })), ...(samples[scenario] ? { discussion: { id: 'tool', revision: 1, status: 'active', content: structuredClone(samples[scenario]) } } : {}) };
 const stream = Object.assign(new EventTarget(), { close() {}, onerror: null, onopen: null });
+if (scenario === 'recovered' || scenario === 'incomplete') {
+  const raw = '{"reply":"它早就不是"刚搭好架子"那种阶段了——骨架、玩法、成长线都在跑。\n现在的阶段是「能玩，正在调手感」。'
+    + (scenario === 'recovered' ? '","quickReplies":[],"tool":{"kind":"structure","nodes":[]}}' : '');
+  const parsed = parseTeacherReply(raw);
+  current.requests = [{
+    ...current.requests[0], text: '现在项目是什么阶段？', sourceConversationId: 'original-source',
+    references: [{ messageId: 'original-message', text: '原来的项目记录', role: 'assistant' }],
+    response: parsed.reply, replyIncomplete: parsed.incomplete, replyParseError: parsed.parseError,
+    suggestedQuestions: parsed.quickReplies, unparsedResponse: raw,
+  }];
+}
 if (scenario === 'retry') {
   const status = new URLSearchParams(location.search).get('status') === 'cancelled' ? 'cancelled' : 'failed';
   current.requests = [{