- Add 'anthropic' to available_providers and unsafe_providers so users can set
provider_name = anthropic in config.ini and use ANTHROPIC_API_KEY
- Add provider name alias normalization so 'togetherAI' (as documented in README)
is accepted as equivalent to 'together'
- Fix NameError in dsk_deepseek: add 'as e' to AuthenticationError, RateLimitError,
and NetworkError except clauses where 'e' was referenced but not bound
- Remove unreachable 'return thought' dead code at end of lm_studio_fn
- Update README to list Anthropic as a supported API provider