v0.12.0

Added

• New stream helpers for common use cases ([0775bd4])
  • final_text/1 - Returns only the final result text, simplest way to get Claude's answer
  • collect/1 - Returns structured summary with text, thinking, tool_calls, and result
  • tap/2 - Side-effect function for logging/monitoring without filtering the stream
  • on_tool_use/2 - Callback invoked for each tool use, useful for progress indicators

Changed

• collect/1 returns tool_calls instead of tool_uses ([7eebfeb])
  • Now returns {tool_use, tool_result} tuples pairing each tool invocation with its result
  • If a tool use has no matching result, the result will be nil
  • Migration: Change summary.tool_uses to summary.tool_calls and update iteration to handle tuples

Removed

• buffered_text/1 stream helper - Use final_text/1 or collect/1 instead ([4a1ee97])