feat(pdf): searchable text layer with per-style subset font embedding

Real BT/Tj text objects ride alongside the vector outlines (Tr 3,
zero visual change): runs preserved at layout time, TTF styles embedded
as allsorts subsets with ToUnicode, width-matched Tm, clip-culled.
WireModel literals moved to ..Default::default() tails.

src/modules/annotate/aligned_dim.rs

@@ -366,7 +366,9 @@ impl CadCommand for AlignedDimensionCommand {
             plinegen: true,
             fill_tris: vec![],
             fill_tris_low: Vec::new(),
-        })
+        
+            ..Default::default()
+})
     }
 
     fn dyn_spec(&self) -> Option<crate::command::DynSpec> {
@@ -482,7 +484,9 @@ fn preview_aligned(p1: DVec3, p2: DVec3, dim_pt: DVec3) -> WireModel {
         plinegen: true,
         fill_tris: vec![],
         fill_tris_low: Vec::new(),
-    }
+    
+        ..Default::default()
+}
 }
 
 

src/modules/annotate/angular_dim.rs

@@ -1275,7 +1275,9 @@ fn preview_wire(points: Vec<DVec3>) -> WireModel {
         plinegen: true,
         fill_tris: vec![],
         fill_tris_low: Vec::new(),
-    }
+    
+        ..Default::default()
+}
 }
 
 inventory::submit!(crate::command::CommandRegistration { names: &["DIMANGULAR"] });

src/modules/annotate/data_link.rs

@@ -134,7 +134,9 @@ impl DataLinkPlaceCommand {
             plinegen: true,
             fill_tris: Vec::new(),
             fill_tris_low: Vec::new(),
-        }
+        
+            ..Default::default()
+}
     }
 }
 

src/modules/annotate/diameter_dim.rs

@@ -364,7 +364,9 @@ fn preview_line(far_chord: Vec3, chord: Vec3, text: Vec3) -> WireModel {
         plinegen: true,
         fill_tris: vec![],
         fill_tris_low: Vec::new(),
-    }
+    
+        ..Default::default()
+}
 }
 
 inventory::submit!(crate::command::CommandRegistration { names: &["DIMDIAMETER"] });

src/modules/annotate/dim_baseline.rs

@@ -755,7 +755,9 @@ fn preview_for_dimension(dimension: &Dimension) -> WireModel {
         plinegen: true,
         fill_tris: Vec::new(),
         fill_tris_low: Vec::new(),
-    }
+    
+        ..Default::default()
+}
 }
 
 fn linear_preview(

src/modules/annotate/jogged_radius_dim.rs

@@ -506,7 +506,9 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
         plinegen: true,
         fill_tris: Vec::new(),
         fill_tris_low: Vec::new(),
-    }
+    
+        ..Default::default()
+}
 }
 
 inventory::submit!(crate::command::CommandRegistration {

src/modules/annotate/leader_cmd.rs

@@ -470,7 +470,9 @@ fn preview_wire(pts: &[Vec3], arrow_size: f32) -> WireModel {
         plinegen: true,
         fill_tris: vec![],
         fill_tris_low: Vec::new(),
-    }
+    
+            ..Default::default()
+}
 }
 
 pub fn arrowhead_wings(tip: Vec3, next: Vec3, size: f32) -> [Vec3; 2] {

src/modules/annotate/linear_dim.rs

@@ -590,7 +590,9 @@ fn preview_wire(points: Vec<DVec3>) -> WireModel {
         plinegen: true,
         fill_tris: vec![],
         fill_tris_low: Vec::new(),
-    }
+    
+            ..Default::default()
+}
 }
 
 /// Project the two extension origins onto the dimension line, which passes

src/modules/annotate/mleader_cmd.rs

@@ -799,7 +799,9 @@ fn preview_wire(pts: &[Vec3], arrow_size: f32) -> WireModel {
         plinegen: true,
         fill_tris: vec![],
         fill_tris_low: Vec::new(),
-    }
+    
+            ..Default::default()
+}
 }
 
 fn arrowhead_wings(tip: Vec3, next: Vec3, size: f32) -> [Vec3; 2] {

src/modules/annotate/mleader_edit.rs

@@ -523,7 +523,9 @@ fn preview_wire(pts: &[Vec3]) -> WireModel {
         plinegen: true,
         fill_tris: vec![],
         fill_tris_low: Vec::new(),
-    }
+    
+            ..Default::default()
+}
 }
 
 fn point_segment_distance_xy(point: Vector3, start: Vector3, end: Vector3) -> f64 {

src/modules/annotate/ordinate_dim.rs

@@ -315,7 +315,9 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
         plinegen: true,
         fill_tris: vec![],
         fill_tris_low: Vec::new(),
-    }
+    
+        ..Default::default()
+}
 }
 
 

src/modules/annotate/radius_dim.rs

@@ -376,7 +376,9 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
         plinegen: true,
         fill_tris: vec![],
         fill_tris_low: Vec::new(),
-    }
+    
+        ..Default::default()
+}
 }
 
 inventory::submit!(crate::command::CommandRegistration { names: &["DIMRADIUS"] });

src/modules/annotate/table_cmd.rs

@@ -341,7 +341,9 @@ impl TableCommand {
             plinegen: true,
             fill_tris: Vec::new(),
             fill_tris_low: Vec::new(),
-        }
+        
+            ..Default::default()
+}
     }
 }
 

src/modules/annotate/tolerance_cmd.rs

@@ -114,7 +114,9 @@ impl CadCommand for ToleranceCommand {
             plinegen: true,
             fill_tris: vec![],
             fill_tris_low: Vec::new(),
-        })
+        
+            ..Default::default()
+})
     }
 }