- task-2: fractional-scale-v1 research notes for client surfaces - task-3: fractional-scale-v1 research notes for layer surfaces + transparency/blur notes
- Add float current_scale to Client struct (HOT section, after corner_radius) - Add float current_scale to LayerSurface struct (HOT section, after mapped) - Add config scale range validation [0.25, 4.0] with fprintf warnings