feat: integrate pixel teacher presence and resilient classroom preview

src/lib/coding-teacher.ts

@@ -2,6 +2,8 @@ import { hostApiFetch, createHostEventSource, ensureHostApiToken } from './host-
 import type {
   ConsultationRole,
   TeacherAvailability,
+  TeacherCheckInInput,
+  TeacherCheckInResult,
   TeacherDefinition,
   TeacherSend,
   TeacherTopic,
@@ -14,6 +16,11 @@ export function teacherTopicsPath(projectId: string, sourceId: string, role?: Co
     : `/api/coding/projects/${encodeURIComponent(projectId)}/conversations/${encodeURIComponent(sourceId)}/teacher-topics`;
 }
 export const teacherApi = {
+  checkIn: (projectId: string, input: TeacherCheckInInput) =>
+    hostApiFetch<TeacherCheckInResult>(`/api/coding/projects/${encodeURIComponent(projectId)}/teacher-check-in`, {
+      method: 'POST',
+      body: JSON.stringify(input),
+    }),
   config: (role: ConsultationRole = 'teacher') =>
     hostApiFetch<TeacherAvailability & { definition: TeacherDefinition | null }>(
       `/api/coding/${role}/config`
@@ -28,8 +35,8 @@ export const teacherApi = {
       method: 'POST',
       body: JSON.stringify({ draftRevision, sampleContext }),
     }),
-  read: (base: string, id: string) =>
-    hostApiFetch<TeacherTopic>(base + '/' + encodeURIComponent(id)),
+  read: (base: string, id: string, select = true) =>
+    hostApiFetch<TeacherTopic>(base + '/' + encodeURIComponent(id) + (select ? '' : '?select=false')),
   send: (base: string, id: string, input: TeacherSend) =>
     hostApiFetch<TeacherTopic>(base + '/' + encodeURIComponent(id) + '/messages', {
       method: 'POST',