a997441392
Wiki summary/entity/concept/page-modify prompts instructed the LLM to reproduce  verbatim, so high-entropy image URLs passed through generation and got corrupted (dropped UUID segments, duplicated or mangled path prefixes, even CJK chars inserted into the bucket name), producing object keys that don't exist -> 404. Mask all image URLs to opaque placeholders at the generateWithTemplate chokepoint and deterministically rehydrate after generation; drop corrupted/hallucinated placeholders so broken links never reach storage.