feat(jobs): echo worker + CLI bootstrap

Job queue starts only in the CLI gate (not inside createApp), so tests
manage their own queue lifecycle. waitForJob() takes a (name, id) pair
to match pg-boss v10's getJobById signature.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

server.js

@@ -3,6 +3,8 @@ import express from 'express';
 import { pool } from './lib/db/pool.js';
 import { log } from './lib/log.js';
 import { mountApi } from './lib/api/index.js';
+import * as queue from './lib/jobs/queue.js';
+import { registerWorkers } from './lib/jobs/index.js';
 
 const VERSION = '2.0.0-alpha.2';
 
@@ -36,5 +38,17 @@ export function createApp() {
 
 if (import.meta.url === `file://${process.argv[1]}`) {
   const port = process.env.PORT || 3000;
-  createApp().listen(port, () => log.info({ port }, 'void-server listening'));
+  const app = createApp();
+  queue.start()
+    .then(registerWorkers)
+    .then(() => log.info('job queue ready'))
+    .catch(err => log.error({ err }, 'queue boot failed'));
+  app.listen(port, () => log.info({ port }, 'void-server listening'));
+  for (const sig of ['SIGTERM', 'SIGINT']) {
+    process.on(sig, async () => {
+      log.info({ sig }, 'shutting down');
+      try { await queue.stop(); } catch { /* */ }
+      process.exit(0);
+    });
+  }
 }