Add teacher microphone and per-question model selection

electron/coding-teacher/cloud-runner.ts

@@ -251,6 +251,7 @@ export function prepareCloudTeacher(
           '/questions',
           {
             teacher_version: currentRequest?.teacherVersion ?? topic.version,
+            ...(currentRequest?.modelId ? { model_id: currentRequest.modelId } : {}),
             thread_id: currentRequest?.runtimeThreadId ?? topic.id,
             request_id: requestId,
             query,

electron/coding-teacher/model-catalog.ts

@@ -0,0 +1,38 @@
+import type { TeacherModelCatalog } from '../../shared/coding-teacher';
+import { normalizeManagedModelCatalog } from '../../shared/managed-model-capabilities';
+import { teacherCloudRequest, assertTeacherAccount, TeacherError, type TeacherAccount } from './config-client';
+import { teacherCloudTransport } from './cloud-runner';
+
+export function validateTeacherModelId(value: unknown): string | undefined {
+  if (value === undefined) return undefined;
+  if (typeof value !== 'string' || !value.trim() || value.length > 200 || value !== value.trim())
+    throw new TeacherError(422, 'teacher_model_invalid', '请选择有效的模型。');
+  return value;
+}
+
+/** Main strips credentials; each selected model is revalidated when the question is accepted. */
+export async function teacherModelCatalog(account: TeacherAccount, runtime: 'local' | 'yuxi'): Promise<TeacherModelCatalog> {
+  if (runtime === 'yuxi') {
+    let result;
+    try { result = await teacherCloudTransport(account).json('/models'); }
+    catch (error) {
+      if (error instanceof TeacherError && error.status === 404) return {
+        supported: false, models: [], message: '老师服务更新后即可切换模型，目前使用老师配置。',
+      };
+      throw error;
+    }
+    assertTeacherAccount(account);
+    if (result.model_selection === false) return { supported: false, models: [], message: '老师服务更新后即可切换模型，目前使用老师配置。' };
+    if (result.model_selection !== true || !Array.isArray(result.models)
+      || result.models.some(item => !item || typeof item !== 'object' || typeof item.id !== 'string' || !item.id || item.id.length > 200))
+      throw new TeacherError(502, 'teacher_models_invalid', '模型列表暂不可用，请重试。');
+    const local = await teacherModelCatalog(account, 'local');
+    const textModels = new Set(local.models.map(item => item.id));
+    return { supported: true, models: result.models.filter(item => textModels.has(item.id)).map(item => ({ id: item.id as string })) };
+  }
+  const config = await teacherCloudRequest<{ models: string[]; model_capabilities_v2: unknown }>(account, '/api/auth/me/model-config');
+  const catalog = normalizeManagedModelCatalog(config.model_capabilities_v2, config.models);
+  assertTeacherAccount(account);
+  return { supported: true, models: config.models.filter(id => catalog?.models[id]?.inputModalities?.includes('text')
+    && catalog.models[id]?.outputModalities?.includes('text')).map(id => ({ id })) };
+}

electron/coding-teacher/service.ts

@@ -32,6 +32,7 @@ import { TeacherConversationStore } from './conversation-store';
 import { readJsonFile } from '../coding-projects/atomic-json';
 import { compileTeacherContext } from './context';
 import { prepareTeacherModel } from './model-runner';
+import { teacherModelCatalog, validateTeacherModelId } from './model-catalog';
 import { prepareCloudTeacher } from './cloud-runner';
 import { readTeacherSource } from './source-reader';
 import { applyTeacherReply, teacherReplyInstructions } from './reply';
@@ -59,6 +60,7 @@ export interface TeacherServiceOptions {
   prepareModel?: typeof prepareTeacherModel;
   prepareCloud?: typeof prepareCloudTeacher;
   catalog?: typeof teacherCatalog;
+  models?: typeof teacherModelCatalog;
   readSource?(scope: TeacherScope): Promise<TeacherSourceContext>;
 }
 export class CodingTeacherService {
@@ -100,6 +102,9 @@ export class CodingTeacherService {
       : null;
     return { ...status, definition: published?.payload ?? null };
   }
+  async models(runtime: 'local' | 'yuxi') {
+    return (this.options.models ?? teacherModelCatalog)(await this.account(), runtime);
+  }
   async catalog() {
     return (this.options.catalog ?? teacherCatalog)(await this.account());
   }
@@ -415,6 +420,7 @@ export class CodingTeacherService {
     checkIn?: { source: TeacherSourceContext; fingerprint: string }
   ): Promise<TeacherTopic> {
     teacherTopicId(input.requestId);
+    const modelId = validateTeacherModelId(input.modelId);
     const intent = input.intent === undefined ? 'question' : input.intent;
     const structuredReply = intent !== 'check-in';
     if (!['question', 'suggestions', 'guided-help', 'check-in'].includes(intent) || (intent === 'check-in' && !checkIn))
@@ -452,6 +458,7 @@ export class CodingTeacherService {
       if (existing) {
         if (
           existing.text !== input.text ||
+          existing.modelId !== modelId ||
           (scope.agentId && existing.projectId !== scope.projectId) ||
           (existing.intent ?? 'question') !== intent ||
           JSON.stringify(existing.references) !== JSON.stringify(refs) ||
@@ -479,6 +486,7 @@ export class CodingTeacherService {
         const previous = topic.requests.at(-1);
         const reuse = previous && !previous.origin && previous.projectId === scope.projectId
           && previous.sourceConversationId === input.sourceConversationId
+          && previous.modelId === modelId
           && previous.presentation === 'reply-v1'
           && previous.teacherVersion === selected.version && previous.runtimeThreadId;
         newConversationSegment = !reuse;
@@ -545,6 +553,15 @@ export class CodingTeacherService {
         return structuredClone(ref);
       });
       const isCloud = topic.definition.runtime === 'yuxi';
+      if (modelId) {
+        const models = await (this.options.models ?? teacherModelCatalog)(account, isCloud ? 'yuxi' : 'local');
+        if (!models.supported || !models.models.some(item => item.id === modelId))
+          throw new TeacherError(422, 'teacher_model_unavailable', models.message ?? '这个模型暂不可用，请重新选择。');
+        this.assertAccount(account);
+      }
+      const modelDefinition = modelId
+        ? { ...topic.definition, model: { model_id: modelId, reasoning_choice: { mode: 'default' as const } } }
+        : topic.definition;
       if (!isCloud && !topic.definition.system_prompt.trim())
         throw new TeacherError(422, 'teacher_definition_invalid', '请先配置智能体的系统提示词。');
       const access = scope.projectId === 'preview' ? undefined : {
@@ -573,7 +590,7 @@ export class CodingTeacherService {
             topic.revision++;
             this.events.emit(key, structuredClone(topic));
           })
-        : await (this.options.prepareModel ?? prepareTeacherModel)(account, topic.definition,
+        : await (this.options.prepareModel ?? prepareTeacherModel)(account, modelDefinition,
           access,
           { finalOnly: structuredReply });
       if (checkIn) this.assertAccount(account);
@@ -614,6 +631,7 @@ export class CodingTeacherService {
         text: input.text,
         references,
         createdAt: new Date().toISOString(),
+        ...(modelId ? { modelId } : {}),
         sourceCursor: source.cursor,
         sourceCapturedAt: source.capturedAt,
         includedSourceMessageIds: compiled.includedSourceMessageIds,