Cache Key Bug Returned Same Answer to Different Questions in AI Compressor

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A developer discovered a silent caching bug in a context compressor where two entirely different queries received the byte-for-byte identical 544-character response. The root cause was a cache key built solely on a content hash, ignoring the query text and compression level — two of the three inputs that determine the output. This meant the first caller's result was served to every subsequent user accessing the same content, regardless of what they actually asked. The bug produced no errors or warnings, making it especially hard to detect, and its impact worsened as more users shared the same document. The fix involves incorporating all function inputs — content, query, and compression level — into the cache key.

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