v2: add agent-runner integration tests

Poll loop end-to-end with mock provider: message pickup, batch
processing, concurrent polling for late arrivals.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

container/agent-runner/src/integration.test.ts

@@ -0,0 +1,120 @@
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
+
+import { initTestSessionDb, closeSessionDb, getSessionDb } from './db/connection.js';
+import { getUndeliveredMessages } from './db/messages-out.js';
+import { getPendingMessages } from './db/messages-in.js';
+import { MockProvider } from './providers/mock.js';
+import { runPollLoop } from './poll-loop.js';
+
+beforeEach(() => {
+  initTestSessionDb();
+});
+
+afterEach(() => {
+  closeSessionDb();
+});
+
+function insertMessage(id: string, content: object, opts?: { platformId?: string; channelType?: string; threadId?: string }) {
+  getSessionDb()
+    .prepare(
+      `INSERT INTO messages_in (id, kind, timestamp, status, platform_id, channel_type, thread_id, content)
+       VALUES (?, 'chat', datetime('now'), 'pending', ?, ?, ?, ?)`,
+    )
+    .run(id, opts?.platformId ?? null, opts?.channelType ?? null, opts?.threadId ?? null, JSON.stringify(content));
+}
+
+describe('poll loop integration', () => {
+  it('should pick up a message, process it, and write a response', async () => {
+    // Insert a message before starting the loop
+    insertMessage('m1', { sender: 'Alice', text: 'What is the meaning of life?' }, { platformId: 'chan-1', channelType: 'discord', threadId: 'thread-1' });
+
+    const provider = new MockProvider(() => '42');
+
+    // Run the poll loop in background, abort after it processes
+    const controller = new AbortController();
+    const loopPromise = runPollLoopWithTimeout(provider, controller.signal, 2000);
+
+    // Wait for processing
+    await waitFor(() => getUndeliveredMessages().length > 0, 2000);
+    controller.abort();
+
+    // Verify
+    const out = getUndeliveredMessages();
+    expect(out).toHaveLength(1);
+    expect(JSON.parse(out[0].content).text).toBe('42');
+    expect(out[0].platform_id).toBe('chan-1');
+    expect(out[0].channel_type).toBe('discord');
+    expect(out[0].thread_id).toBe('thread-1');
+    expect(out[0].in_reply_to).toBe('m1');
+
+    // Input message should be completed
+    const pending = getPendingMessages();
+    expect(pending).toHaveLength(0);
+
+    await loopPromise.catch(() => {}); // swallow abort
+  });
+
+  it('should process multiple messages in a batch', async () => {
+    insertMessage('m1', { sender: 'Alice', text: 'Hello' });
+    insertMessage('m2', { sender: 'Bob', text: 'World' });
+
+    const provider = new MockProvider(() => 'Got both messages');
+    const controller = new AbortController();
+    const loopPromise = runPollLoopWithTimeout(provider, controller.signal, 2000);
+
+    await waitFor(() => getUndeliveredMessages().length > 0, 2000);
+    controller.abort();
+
+    const out = getUndeliveredMessages();
+    expect(out).toHaveLength(1);
+    expect(JSON.parse(out[0].content).text).toBe('Got both messages');
+
+    await loopPromise.catch(() => {});
+  });
+
+  it('should process messages arriving after loop starts', async () => {
+    const provider = new MockProvider(() => 'Processed');
+    const controller = new AbortController();
+    const loopPromise = runPollLoopWithTimeout(provider, controller.signal, 3000);
+
+    // Insert message after loop has started
+    await sleep(200);
+    insertMessage('m-late', { sender: 'Charlie', text: 'Late arrival' });
+
+    await waitFor(() => getUndeliveredMessages().length > 0, 2000);
+    controller.abort();
+
+    const out = getUndeliveredMessages();
+    expect(out.length).toBeGreaterThanOrEqual(1);
+
+    await loopPromise.catch(() => {});
+  });
+});
+
+// Helper: run poll loop until aborted or timeout
+async function runPollLoopWithTimeout(provider: MockProvider, signal: AbortSignal, timeoutMs: number): Promise<void> {
+  return Promise.race([
+    runPollLoop({
+      provider,
+      cwd: '/tmp',
+      mcpServers: {},
+      env: {},
+    }),
+    new Promise<void>((_, reject) => {
+      signal.addEventListener('abort', () => reject(new Error('aborted')));
+    }),
+    new Promise<void>((_, reject) => setTimeout(() => reject(new Error('timeout')), timeoutMs)),
+  ]);
+}
+
+async function waitFor(condition: () => boolean, timeoutMs: number): Promise<void> {
+  const start = Date.now();
+  while (!condition()) {
+    if (Date.now() - start > timeoutMs) throw new Error('waitFor timeout');
+    await sleep(50);
+  }
+}
+
+function sleep(ms: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}