[morinokami]

Summary

When a queue handler throws, its error is never logged. The generated __processQueue catches it without binding it (} catch { __ok = false; }), so the reason is lost on every path:

• Native Cloudflare consumers: the Worker's queue() throws a new Error("queue: Handler failed."), and Workers Logs and void project logs show only that.
• Dev: /__void/queue answers {"ok":false}, and nothing reaches the terminal.
• Void Cloud: the relay gets a 200 {"ok":false} and retries the batch, and nothing is logged.

The generated scheduled() already logs a failing job's error ([void] Scheduled job … failed for cron "…"). __processQueue in packages/void/src/router/compile.ts now does the same for queue handlers before marking the batch failed, which covers all three paths. When no handler matches the queue, __processQueue returned the reason only as error, which the native queue() dropped and the Void Cloud relay ignores, so it now logs that reason too. handleQueueRelay in packages/void/src/cli/wrapper.ts had the same catch and now logs too. The wrapper's native queue() already lets errors through, and the framework dev trigger already logs them ([void] queue handler threw:).

The thrown queue: Handler failed., the { ok: false } result and the ack/retry decisions are unchanged. docs/guide/queues.md now says the handler's error is logged.

Repro

1. queues/fail.ts:

   import { defineQueue } from 'void';
   
   export default defineQueue(async () => {
     throw new Error('boom');
   });

2. Start the dev server, then send it a message with the token it prints:

   curl -X POST http://localhost:5173/__void/queue \
     -H "x-void-dev-trigger: <token>" \
     -d '{"queue":"fail","messages":[{"id":"1","timestamp":0,"body":{},"attempts":1}]}'

• Before: the response is {"ok":false}, and boom is logged nowhere.
• After: the response is unchanged, and the terminal shows [void] Queue handler queues/fail.ts failed for queue "fail": Error: boom with its stack. A message sent through the queue binding (Miniflare's native delivery) logs the same line.

Tests

• packages/void/test/integration/queue-dispatch.test.ts: the error a handler throws reaches console.error as the same object, with its file and queue, through __processQueue and through the native queue(). Both also log the reason for an unknown queue.
• packages/void/test/unit/wrapper.test.ts: the same for the wrapper's HTTP relay.