feat(dimstyle): expand Dimension Style editor to the full field set

Adds the remaining ~40 DIMSTYLE variables across the tabs (and a new
Alternate Units tab): dim/ext line colors+lineweights, fixed-length ext
lines, separate arrow blocks, arc symbol, jog angle, text color/justify/
vertical pos/fill/direction, fit options (DIMATFIT/DIMTIX/DIMSOXD/DIMTMOVE/
DIMUPT/DIMTOFL/DIMFIT), decimal separator, rounding, zero suppression,
fraction + angular units, alternate units, and tolerance vert-just/zero
suppression. Only the arrowhead-block / extension-line-linetype Handle
references are left (they need a block/linetype picker).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/mod.rs

@@ -391,6 +391,53 @@ pub(super) struct OpenCADStudio {
     ds_dimtdec: String,
     ds_dimtfac: String,
     ds_annotative: bool,
+    // Lines (colors / lineweights / fixed-length extension)
+    ds_dimclrd: String,
+    ds_dimlwd: String,
+    ds_dimclre: String,
+    ds_dimlwe: String,
+    ds_dimfxl: String,
+    ds_dimfxlon: bool,
+    // Symbols & Arrows
+    ds_dimsah: bool,
+    ds_dimarcsym: String,
+    ds_dimjogang: String,
+    // Text
+    ds_dimclrt: String,
+    ds_dimjust: String,
+    ds_dimtvp: String,
+    ds_dimtfill: String,
+    ds_dimtfillclr: String,
+    ds_dimtxtdirection: bool,
+    // Fit
+    ds_dimatfit: String,
+    ds_dimtix: bool,
+    ds_dimsoxd: bool,
+    ds_dimtmove: String,
+    ds_dimupt: bool,
+    ds_dimtofl: bool,
+    ds_dimfit: String,
+    // Primary units
+    ds_dimdsep: String,
+    ds_dimrnd: String,
+    ds_dimzin: String,
+    ds_dimfrac: String,
+    ds_dimaunit: String,
+    ds_dimadec: String,
+    ds_dimazin: String,
+    // Alternate units
+    ds_dimalt: bool,
+    ds_dimaltf: String,
+    ds_dimaltd: String,
+    ds_dimaltu: String,
+    ds_dimalttd: String,
+    ds_dimaltrnd: String,
+    ds_dimapost: String,
+    ds_dimaltz: String,
+    ds_dimalttz: String,
+    // Tolerances (extra)
+    ds_dimtolj: String,
+    ds_dimtzin: String,
 }
 
 /// What triggered the "unsaved changes" dialog.
@@ -434,6 +481,46 @@ pub enum DsField {
     Dimtdec,
     Dimtfac,
     Annotative,
+    Dimclrd,
+    Dimlwd,
+    Dimclre,
+    Dimlwe,
+    Dimfxl,
+    Dimfxlon,
+    Dimsah,
+    Dimarcsym,
+    Dimjogang,
+    Dimclrt,
+    Dimjust,
+    Dimtvp,
+    Dimtfill,
+    Dimtfillclr,
+    Dimtxtdirection,
+    Dimatfit,
+    Dimtix,
+    Dimsoxd,
+    Dimtmove,
+    Dimupt,
+    Dimtofl,
+    Dimfit,
+    Dimdsep,
+    Dimrnd,
+    Dimzin,
+    Dimfrac,
+    Dimaunit,
+    Dimadec,
+    Dimazin,
+    Dimalt,
+    Dimaltf,
+    Dimaltd,
+    Dimaltu,
+    Dimalttd,
+    Dimaltrnd,
+    Dimapost,
+    Dimaltz,
+    Dimalttz,
+    Dimtolj,
+    Dimtzin,
 }
 
 #[derive(Debug, Clone)]
@@ -1105,6 +1192,46 @@ impl OpenCADStudio {
             ds_dimtdec: "2".to_string(),
             ds_dimtfac: "1".to_string(),
             ds_annotative: false,
+            ds_dimclrd: "0".to_string(),
+            ds_dimlwd: "-2".to_string(),
+            ds_dimclre: "0".to_string(),
+            ds_dimlwe: "-2".to_string(),
+            ds_dimfxl: "1".to_string(),
+            ds_dimfxlon: false,
+            ds_dimsah: false,
+            ds_dimarcsym: "0".to_string(),
+            ds_dimjogang: "45".to_string(),
+            ds_dimclrt: "0".to_string(),
+            ds_dimjust: "0".to_string(),
+            ds_dimtvp: "0".to_string(),
+            ds_dimtfill: "0".to_string(),
+            ds_dimtfillclr: "0".to_string(),
+            ds_dimtxtdirection: false,
+            ds_dimatfit: "3".to_string(),
+            ds_dimtix: false,
+            ds_dimsoxd: false,
+            ds_dimtmove: "0".to_string(),
+            ds_dimupt: false,
+            ds_dimtofl: false,
+            ds_dimfit: "3".to_string(),
+            ds_dimdsep: "46".to_string(),
+            ds_dimrnd: "0".to_string(),
+            ds_dimzin: "0".to_string(),
+            ds_dimfrac: "0".to_string(),
+            ds_dimaunit: "0".to_string(),
+            ds_dimadec: "0".to_string(),
+            ds_dimazin: "0".to_string(),
+            ds_dimalt: false,
+            ds_dimaltf: "25.4".to_string(),
+            ds_dimaltd: "2".to_string(),
+            ds_dimaltu: "2".to_string(),
+            ds_dimalttd: "2".to_string(),
+            ds_dimaltrnd: "0".to_string(),
+            ds_dimapost: String::new(),
+            ds_dimaltz: "0".to_string(),
+            ds_dimalttz: "0".to_string(),
+            ds_dimtolj: "1".to_string(),
+            ds_dimtzin: "0".to_string(),
         };
         app.sync_ribbon_layers();
         app