- Added `note` support to todo-write with `op: "note"` and required `text` input.
- Added optional `notes: string[]` to todo models and preserved notes in cloning and session task mapping.
- Implemented `op: "note"` append flow and markdown `>` block serialization/parsing for todo import/export.
- Updated HUD todo rendering to append superscript `+N` note markers and show in-progress note bodies.
- Documented note operation, required text field, and note rendering rules in todo-write docs and changelog.
- Added /todo export and /todo import commands to write/read markdown todos, defaulting to TODO.md.
- Changed /todo append from JSON payloads to tokenized [<phase>] <task...> input with quoted tokens.
- Changed /todo start/done/drop/rm matching to fuzzy-resolve task or phase names in TodoCommandController.
- Removed /todo replace from todo-command builtins in CHANGELOG and command registry.
- Added a private #currentPhases helper that reads todo phases from the latest session entries.
- Updated /todo handlers to use #currentPhases so existing todo states are loaded from entries when available.
- Added a fallback to session.getTodoPhases when no entry-derived phases exist.
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