- Reformatted method calls in RemoveFormula and SetAxis for consistency.
- Minor formatting changes to improve readability.
Co-Authored-By: fiddlerwoaroof/git-smart-commit (gpt-oss:20b)
Define Effect trait in ui/effect.rs with concrete effect structs for
all model mutations, view changes, navigation, and app state updates.
Each effect implements apply(&self, &mut App). Add App::apply_effects
to apply a sequence of effects. No behavior change yet — existing
key handlers still work as before.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
