muse-tracker 0.0.8

• Langfuse destination ("destination": "langfuse"). Spans go to
  Langfuse's OTLP endpoint as agent, generation and tool observations
  with input, output, model, token usage, error level and trace-level session,
  tags and metadata. Langfuse stores every write, so each span is sent once:
  children on first sight, a task's root once the task is idle
  (rootSettleMinutes), and runs that may repeat earlier sends check Langfuse
  first. A send that fails without an answer is checked before its retry.
• More of muse.db in every trace, for both destinations: optional
  session_id, parent_task_id, status, kind, model, depth and
  output_text on tasks, output_text on model calls, server on tool calls.
• Setup version 4: saved queries add those columns.