Feature/anthropic retry mechanism

[malikrohail]

Enhanced Error Detection:

1. Expanded detection of overloaded errors beyond just status code 429
2. Added pattern matching for error messages containing "overloaded", "rate limit", "too many requests"
3. Preserved detailed error information for better handling

Improved Retry Logic:
1.Maintained exponential backoff with random jitter to avoid thundering herd problems
2. Added explicit retry counter and clear user feedback during retry attempts

Testing:
Simple URL parameter-based test simulation
Configurable number of simulated failures before success.

I’m going to leave this PR open for now — I want to play around with it a bit more and do some additional testing before merging. Thanks for the patience! (Ideally would like to stimulate the behavior when Anthropic servers are dealing with a lot of requests.

[malikrohail]

It's been a month since the change was implemented, and I haven't encountered any 429 errors until yet through antrophic. That being said, I'll continue to monitor things moving forward to ensure everything remains stable