Merge teacher reply cleanup with continuous conversations

tests/unit/teacher-retired-discussion-route.test.ts

@@ -0,0 +1,31 @@
+// @vitest-environment node
+import { describe, expect, it, vi } from 'vitest';
+import type { IncomingMessage, ServerResponse } from 'node:http';
+import { Readable } from 'node:stream';
+import type { HostApiContext } from '../../electron/api/context';
+import { handleCodingTeacherRoutes } from '../../electron/api/routes/coding-teacher';
+
+describe('retired discussion mutation routes', () => {
+  it.each([
+    '/api/coding/projects/project/conversations/source/teacher-topics/topic/discussion',
+    '/api/coding/teacher-preview/topics/topic/discussion',
+    '/api/coding/projects/project/agent-topics/topic/discussion',
+    '/api/coding/projects/project/teacher-topics/topic/discussion',
+    '/api/coding/projects/project/friend-topics/topic/discussion',
+    '/api/coding/agent-conversations/agent/discussion',
+  ])('does not dispatch a stale client action at %s', async pathname => {
+    const req = Object.assign(Readable.from([JSON.stringify({
+      toolId: 'archived-tool', revision: 7, action: 'resume',
+    })]), { method: 'POST' }) as IncomingMessage;
+    const res = { setHeader: vi.fn(), end: vi.fn() };
+    const updateDiscussion = vi.fn().mockResolvedValue({});
+    const conversation = vi.fn();
+    const ctx = { codingProducts: { teacher: { updateDiscussion, conversation } } } as unknown as HostApiContext;
+
+    expect(await handleCodingTeacherRoutes(req, res as unknown as ServerResponse,
+      new URL(pathname, 'http://localhost'), ctx)).toBe(false);
+    expect(updateDiscussion).not.toHaveBeenCalled();
+    expect(conversation).not.toHaveBeenCalled();
+    expect(res.end).not.toHaveBeenCalled();
+  });
+});