chore: remove unused imports and variables (zero warnings)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/modules/home/modify/break_cmd.rs

@@ -190,7 +190,7 @@ fn break_ellipse(ell: &EllipseEnt, p1: Vec3, p2: Vec3) -> Vec<EntityType> {
     let cy = ell.center.y;
     let a = (ell.major_axis.x.powi(2) + ell.major_axis.y.powi(2)).sqrt();
     if a < 1e-9 { return vec![EntityType::Ellipse(ell.clone())]; }
-    let b = a * ell.minor_axis_ratio;
+    let _b = a * ell.minor_axis_ratio;
     let nx = ell.major_axis.x / a;
     let ny = ell.major_axis.y / a;
 

src/modules/home/modify/fillet.rs

@@ -9,7 +9,7 @@
 //   Pick two lines (line-only; arcs are not chamferable).
 //   Finds intersection, backs off dist1 along line 1 and dist2 along line 2.
 
-use acadrust::entities::{Arc as ArcEnt, Line as LineEnt, LwPolyline, LwVertex};
+use acadrust::entities::{Arc as ArcEnt, Line as LineEnt, LwPolyline};
 use acadrust::types::Vector3;
 use acadrust::{EntityType, Handle};
 use glam::Vec3;

src/modules/home/modify/lengthen.rs

@@ -8,8 +8,8 @@
 // The entity is modified at whichever end is closest to the pick point.
 
 use acadrust::entities::{Arc as ArcEnt, Ellipse as EllipseEnt, Line as LineEnt, LwPolyline, Spline as SplineEnt};
-use truck_modeling::base::{BoundedCurve, Cut, ParametricCurve};
-use crate::modules::home::modify::spline_ops::{bspline_to_spline, spline_nearest_t, spline_to_bspline};
+use truck_modeling::base::{BoundedCurve, Cut};
+use crate::modules::home::modify::spline_ops::{bspline_to_spline, spline_to_bspline};
 use acadrust::types::Vector3;
 use acadrust::{EntityType, Handle};
 use glam::Vec3;

src/modules/home/modify/offset.rs

@@ -13,7 +13,7 @@ use std::f64::consts::TAU;
 
 use acadrust::entities::LwVertex;
 use acadrust::entities::{Arc as ArcEnt, Circle as CircleEnt, Ellipse as EllipseEnt, Line as LineEnt, LwPolyline, Spline as SplineEnt};
-use crate::modules::home::modify::spline_ops::{bspline_to_spline, spline_sample_xy, spline_to_bspline, spline_pts_wire};
+use crate::modules::home::modify::spline_ops::{spline_sample_xy, spline_pts_wire};
 use acadrust::{EntityType, Handle};
 use glam::Vec3;