- Refactored `todo` tool to accept a single operation object instead of an `ops` array.
- Implemented parameter normalization to maintain backward compatibility with legacy array-based tool calls.
- Updated tool instructions, documentation, and UI rendering components to reflect the new interface.
- Added compatibility tests to verify rendering and execution for both legacy and current operation formats.
- Removed the `note` operation from `TodoOp` validation and the `text` field from todo operation payloads.
- Deleted `TodoItem` note storage and stripped note-aware logic from execution, markdown round-trip helpers, summaries, and rendering.
- Updated todo docs and prompt schema text to remove `note` usage and keep the public operation set aligned.
- 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.
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