Cargo: codec 76d2a1c, kernel e652b4d, graph 0545fa9; text styles, templates, solid edges

- Text styles keep their TrueType typeface through save and reopen (codec
  reads and writes the STYLE record's ACAD extended data) (#1633)
- Unnamed shape-file entries no longer show in text style lists (#1634)
- Save As offers DWT 2018; NEW asks for the template to start from, while
  Ctrl+N and the quick-access New run QNEW with the default template (#1635)
- An edge next to an earlier fillet of the same radius rounds together with
  it (kernel); the solid stays drawn and pickable while edges are chosen
  (#1625, #1107)
- A full cache rebuild drops the B-rep cache too, so an undone fillet does
  not come back with the next edge operation (#1107)
- Selected solids in shaded styles highlight only their visible edges (#1031)
- VIEW ISO / SWISO / SEISO / NEISO / NWISO snap to the isometric corners

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/app/view/modal.rs

@@ -1152,7 +1152,9 @@ impl OpenCADStudio {
                 let mut lt_opts: Vec<String> = vec!["ByBlock".to_string()];
                 lt_opts.extend(doc.line_types.iter().map(|lt| lt.name.clone()));
                 let mut textstyle_opts: Vec<String> = vec!["None".to_string()];
-                textstyle_opts.extend(doc.text_styles.iter().map(|t| t.name.clone()));
+                textstyle_opts.extend(
+                    doc.text_styles.iter().filter(|t| !t.is_shape_file).map(|t| t.name.clone()),
+                );
                 let opt_block = |h: Option<codec::types::Handle>| -> String {
                     match h {
                         Some(h) => doc
@@ -1416,7 +1418,11 @@ impl OpenCADStudio {
             let mut lt_opts: Vec<String> = vec!["ByBlock".to_string()];
             lt_opts.extend(doc.line_types.iter().map(|lt| lt.name.clone()));
             let text_style_opts: Vec<String> =
-                doc.text_styles.iter().map(|style| style.name.clone()).collect();
+                doc.text_styles
+                    .iter()
+                    .filter(|style| !style.is_shape_file)
+                    .map(|style| style.name.clone())
+                    .collect();
             let text_style_fixed_height = doc
                 .text_styles
                 .get(&self.ds_dimtxsty)