v0.16.6

Release v0.16.6

Features

• Added MiniMax M3 model to providers
  Integrated MiniMax M3 with support for vision, tool use, thinking, streaming, and structured output across Fireworks, Together AI, and CommandCode providers.

• Stream handler: add upper limit for retry stream
  Introduced a MAX_EMPTY_RESPONSE_RETRIES limit (default 5) to prevent infinite loop when the model returns empty responses.

• Image generation: allow agent to set target output dir
  Added an optional output_dir parameter to the image generation tool so agents can specify where to save generated images.

Bug Fixes

• Reasoning models: make reasoning model work properly with tool calls
  Fixed handling of reasoning_content for reasoning-capable models when tool calls are present, ensuring empty reasoning content defaults to a space to avoid API errors.

• Custom LLM: in OpenAI completion API, tool cannot have image type
  Cheat by converting image content from tool responses into a separate user message for providers that do not allow images in assistant/tool roles (applies to both CustomLLM and TogetherAI services).

• File reading: fix issue that agent cannot read image file correctly
  Updated CodeAnalysisService to return the image result dict (including image_url) when a file is an image, and added .webp support to MIME mapping.

• Model: fix bug that can cause loop on reasoning model without reason content
  Prevent infinite retries when a reasoning model returns empty reasoning_content in _run_stream_response.

• Debug: make the formatting correctly follow source format
  Changed _truncate_content to preserve content list structure (e.g., images, tool calls) instead of flattening it into a single text string, improving console display.

Other Changes

• guess_mime_by_extension promoted to a static method in FileHandler for reuse.