v0.184.3

Fix

• ocr: compare batch-job provider prefixes case-insensitively
• ocr: re-submit a batch job whose provider no longer matches the model
• ocr: keep token-provider failures out of the batch-poll PENDING remap
• ocr: treat a 429 on a batch poll as pending, honouring Retry-After
• ocr: a batch poll with no answer is pending, not a dropped document

Refactor

• ocr: extract the tracked-job lookup out of _process_batch