- anthropic_provider.go (new): AnthropicProvider implementing the Provider
interface using Claude's messages API. Handles:
- System prompt as top-level param (not in messages array)
- Content blocks response format → extract text
- SSE streaming with Anthropic event types (content_block_delta, message_stop)
- Anthropic-specific headers (x-api-key, anthropic-version)
- Retry with exponential backoff (shared logic with OpenAI provider)
- Embedding API returns error (Anthropic has no embeddings; OpenAI-compat
provider should be used for embeddings)
- NewProviderFromConfig factory function: selects AnthropicProvider for
provider="anthropic"/"claude", OpenAIProvider for all others
- bootstrap.go: use NewProviderFromConfig instead of hardcoded NewOpenAIProvider,
allowing config.captain.llm_provider to switch between providers
Note: domestic providers (Volcengine/Doubao/Qwen) use OpenAI-compatible API
and work with the existing OpenAIProvider by setting llm_base_url.
Verified: go build + go vet + go test all pass
rogee
af5c7c6bc7