* fix: bedrock invoke - does not support prompt-caching-scope
* fix: UNSUPPORTED_BEDROCK_INVOKE_BETA_PATTERNS
* init requirements.txt
* init README for claude Agent SDK
* fix: using converse models with UNSUPPORTED_BEDROCK_CONVERSE_BETA_PATTERNS
* fix main.py
* init: proxy_e2e_anthropic_messages_tests