[observability] Add CloudWatch dispatcher and propagate token metadata through async events#276

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mfittko wants to merge 21 commits intomainfrom

feat/cloudwatch-observability

Commits on Mar 30, 2026

[observability] add support for embeddings in event transformation
mfittko
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[proxy] Add request cache namespace support
mfittko
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[observability] Add comprehensive tests for map cloning and response handling
mfittko
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Commits on Mar 31, 2026

chore(token): document clone metadata helper
mfittko
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[observability] Enhance logger with safe write syncer and corresponding tests
mfittko
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[observability] Enhance OpenAI response transformation to support audio transcriptions and add corresponding tests
mfittko
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