- Renamed `TodoWriteTool` to `TodoTool` and its source/prompt files.
- Updated tool registration, schema, renderers, and gating to `todo`.
- Adjusted cursor provider native tool names and tests to match.
- Renamed strike-animation constants and `todo-error-reminder` type.
Applied tasks.todoClearDelay to the interactive Todos panel without mutating the session todo history used by the model.
Added regression coverage for instant, delayed, and disabled auto-clear behavior.
Fixes#1644