Complete QDIM dimension workflows

src/app/mod.rs

@@ -465,6 +465,8 @@ pub(super) struct OpenCADStudio {
     options_tab: crate::ui::window::options::OptionsTab,
     /// Controls whether the TEXTEDIT command repeats automatically (0 = Multiple, 1 = Single).
     pub texteditmode: bool,
+    /// QDIM extension-origin priority: 0 = endpoints, 1 = intersections.
+    pub quick_dimension_snap_priority: u8,
     /// When true (default), saving over an existing file first writes a `.bak`
     /// copy of it for recovery (#205). Toggle with the ISAVEBAK command.
     pub backup_on_save: bool,
@@ -3210,6 +3212,7 @@ impl OpenCADStudio {
             dyn_input: true,
             options_tab: crate::ui::window::options::OptionsTab::General,
             texteditmode: false,
+            quick_dimension_snap_priority: 0,
             backup_on_save: true,
             file_assoc_enabled: true,
             savetime_min: 10,