fix(render): correct lineweight display scaling

Remove the global display boost and scale paper-space lineweights with the current sheet zoom across wire, block-wire, and hatch paths.

Fixes #962

src/shaders/block_wire.wgsl

@@ -5,7 +5,7 @@ struct Uniforms {
     flat_shade: f32,
     transparency_enable: f32,
     linetype_scale: f32,
-    _pad: f32,
+    lineweight_scale: f32,
     view_rot: mat4x4<f32>,
     eye_high: vec3<f32>,
     _pad_eh: f32,
@@ -67,7 +67,7 @@ fn resolve_hw(taper_ratio: f32, world_hw: f32, px_hw: f32) -> f32 {
     if world_hw > 0.0 {
         return max(world_hw / u.world_per_pixel, 0.5);
     }
-    return select(0.5, px_hw, u.lwdisplay_enable > 0.5);
+    return select(0.5, max(px_hw * u.lineweight_scale, 0.5), u.lwdisplay_enable > 0.5);
 }
 
 fn marker_relative(

src/shaders/hatch.wgsl

@@ -14,7 +14,8 @@ struct Uniforms {
     lwdisplay_enable:    f32,
     flat_shade:          f32,
     transparency_enable: f32,
-    _pad:                vec2<f32>,
+    _linetype_scale:     f32,
+    lineweight_scale:    f32,
     // Relative-to-eye (double-single): see wire.wgsl.
     view_rot:            mat4x4<f32>,
     eye_high:            vec3<f32>,
@@ -162,7 +163,11 @@ fn check_family(
         -ddx_xz.x * sin_a + ddx_xz.y * cos_a,
         -ddy_xz.x * sin_a + ddy_xz.y * cos_a,
     )) * 0.5;
-    let width_px = select(1.0, max(fam.line_width, 1.0), u.lwdisplay_enable > 0.5);
+    let width_px = select(
+        1.0,
+        max(fam.line_width * u.lineweight_scale, 1.0),
+        u.lwdisplay_enable > 0.5,
+    );
     let half_line = half_px * width_px;
 
     // World units per screen pixel on each axis — used to light exactly the

src/shaders/hatch_texture.wgsl

@@ -13,7 +13,8 @@ struct Uniforms {
     lwdisplay_enable:    f32,
     flat_shade:          f32,
     transparency_enable: f32,
-    _pad:                vec2<f32>,
+    _linetype_scale:     f32,
+    lineweight_scale:    f32,
     view_rot:            mat4x4<f32>,
     eye_high:            vec3<f32>,
     _pad_eh:             f32,
@@ -146,7 +147,11 @@ fn check_family(
         -ddx_xz.x * sin_a + ddx_xz.y * cos_a,
         -ddy_xz.x * sin_a + ddy_xz.y * cos_a,
     )) * 0.5;
-    let width_px = select(1.0, max(fam.line_width, 1.0), u.lwdisplay_enable > 0.5);
+    let width_px = select(
+        1.0,
+        max(fam.line_width * u.lineweight_scale, 1.0),
+        u.lwdisplay_enable > 0.5,
+    );
     let half_line = half_px * width_px;
 
     let wpx = length(vec2<f32>(ddx_xz.x, ddy_xz.x));

src/shaders/wire.wgsl

@@ -29,7 +29,7 @@ struct Uniforms {
     // every line opaque.
     transparency_enable: f32,
     linetype_scale: f32,
-    _pad: f32,
+    lineweight_scale: f32,
     // ── Relative-to-eye (double-single) ──────────────────────────────────
     // view_rot is the rotation-only view-projection; vertices subtract the eye
     // (eye_high + eye_low, two f32 emulating f64) before transforming, so the
@@ -102,7 +102,7 @@ struct VertexOut {
 fn resolve_hw(taper: f32, world_hw: f32, px_hw: f32) -> f32 {
     if taper > 0.0 { return max(taper / u.world_per_pixel, 0.5); }
     if world_hw > 0.0 { return max(world_hw / u.world_per_pixel, 0.5); }
-    return select(0.5, px_hw, u.lwdisplay_enable > 0.5);
+    return select(0.5, max(px_hw * u.lineweight_scale, 0.5), u.lwdisplay_enable > 0.5);
 }
 
 fn marker_relative(position_high: vec3<f32>, position_low: vec3<f32>, instance: InstanceIn) -> vec3<f32> {

src/shaders/wire_indexed.wgsl

@@ -12,7 +12,7 @@ struct Uniforms {
     flat_shade: f32,
     transparency_enable: f32,
     linetype_scale: f32,
-    _pad: f32,
+    lineweight_scale: f32,
     view_rot:         mat4x4<f32>,
     eye_high:         vec3<f32>,
     _pad_eh:          f32,
@@ -81,7 +81,7 @@ fn resolve_hw(taper_ratio: f32, world_hw: f32, px_hw: f32) -> f32 {
         return max((taper_ratio * world_hw) / u.world_per_pixel, 0.5);
     }
     if world_hw > 0.0 { return max(world_hw / u.world_per_pixel, 0.5); }
-    return select(0.5, px_hw, u.lwdisplay_enable > 0.5);
+    return select(0.5, max(px_hw * u.lineweight_scale, 0.5), u.lwdisplay_enable > 0.5);
 }
 
 fn marker_relative(position_high: vec3<f32>, position_low: vec3<f32>, c: WireConst) -> vec3<f32> {