Improve request retry and circuit breaker handling

[atomiczsec]

Summary

• refactor retrieveResponseDetails into an iterative retry loop that uses a helper to handle backoff without recursive calls
• add a wait helper for rate limiting and separate timestamp maps so rate limiting only tracks send times while failures drive the circuit breaker
• ensure circuit breaker state updates on failures independent of request pacing and continue caching successful responses

Testing

• ./gradlew test

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Codex Task