82b70ead61
- Added automatic Ollama model context window discovery from metadata for accurate token limits. - Added `attribution` option to `PromptOptions` for explicit billing and initiator attribution control. - Added automatic clearing of completed and abandoned todo tasks after ~1 minute. - Changed session directory migration to use `-tmp-` prefix instead of double-dash format. - Updated Ollama model registration to use discovered context window instead of hardcoded 128000 token default. Fixes #440