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fix(ai): classify Amazon Nova input token rejections as context overflow - #52131
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Problem
Amazon Nova on Bedrock rejects an oversized prompt with a mid-stream
validationExceptionafter HTTP 200:No overflow pattern matched, so it was classified as a plain
InvalidRequest. Compaction never started, and long Nova sessions failed.Fix
Add
number of input tokens exceeds maximum lengthto the context-overflow patterns inpackages/ai/src/provider-error.ts. The Bedrock Converse stream already passes the exception message to the shared classifier.Verification
us.amazon.nova-2-lite-v1:0andus.amazon.nova-pro-v1:0now returnsInvalidRequest: context-overflow, not retried.bun testinpackages/aiandbun run checkpass.