Streaming, tool use (with InputJSONDelta assembly), thinking blocks,
cache token tracking, system prompt separation. Tool name sanitization
(fs.read → fs_read) for Anthropic's naming constraints with reverse
translation on tool call responses.
Hardcoded model list with capabilities (Opus 4, Sonnet 4, Haiku 4.5).
Wired into CLI with ANTHROPIC_API_KEY + ANTHROPICS_API_KEY env support.
Also: migrated Mistral SDK to github.com/VikingOwl91/mistral-go-sdk.
Live verified: text streaming + tool calling with claude-sonnet-4.
126 tests across 9 packages.
vikingowl
b0fc4bbbc7