* Add hints to symettry tool
* Add hint system for transform tools
- Design decision: Keep hints simple and focused on primary mouse actions
- Avoid redundancy with dialog UI which already shows keyboard shortcuts clearly
- Implements progressive hints for multi-state tools (Rotate, Scale, Translate)
using declarative hint tables, and focused hints for single-state tools
(Symmetry, Offset) using direct return implementations.
* Cleanup unused declarative hint decls
* Change hint to 'pick axis, edge, or point" per PR feedback
565190fa9d