feat(logging): report failed enqueues, handler failures and retries that will not happen

[creomobile]

What does this PR do?

Makes a lost or silently un-retried job visible. push() is fire-and-forget, so a job which never reached Redis used to leave no trace on either side.

[JobQueue] push error: — the existing marker text, unchanged — now also covers a write rejected after push() returned, which the underlying queue reports through an error handler only. It is written at error level and carries the queue name, the requested delay and ttl and a failure code. A failure the Redis client delivers twice, through both its command callback and its returned promise, still writes one line.

The handler-failure line now states what happens next — retry in <ms> or no retry — together with the message id, so a stalled retry loop can be told apart from a handler which gave up. Two more cases get their own line: a retry suppressed because the job's ttl had expired, and a re-schedule whose write to Redis failed, which means the retry the previous line promised is not coming.

A failure reason is never taken from the error as it is: only an allow-listed code is printed — a framework IMQ_… code, a system E… code, a small integer, a known Redis reply code or a known Redis-client failure message mapped to a code of our own; everything else becomes unknown. The job body is never logged, and a logger which throws cannot influence the queue — including that it no longer cancels a re-schedule, which is the one deliberate behavioural difference.

No control flow, return value, retry decision or timer was changed otherwise.

Type of change

• Bug fix
• New feature
• Documentation
• Refactor / internal
• Other:

Checklist

• I have read the Contributing guide.
• Tests added or updated, and the full suite passes locally (npm test).
• Docs / doc-blocks updated where relevant.
• The PR is focused on a single logical change.

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[creomobile]

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