fix(properties): preserve literal text

Separate numeric fields from names and content so only numeric property values are evaluated as expressions.

Refs #809

src/scene/cache/properties.rs

@@ -86,7 +86,7 @@ pub fn general_section(entity: &EntityType) -> PropSection {
             Property {
                 label: t!("Hyperlink").into_owned(),
                 field: "hyperlink",
-                value: PropValue::EditText(hyperlink),
+                value: PropValue::PlainText(hyperlink),
             },
         ],
     };

src/scene/model/object.rs

@@ -8,8 +8,10 @@ use glam::DVec3;
 pub enum PropValue {
     /// Read-only display text.
     ReadOnly(String),
-    /// Editable numeric/text field.
+    /// Editable numeric field.
     EditText(String),
+    /// Editable text that must not be expression-evaluated.
+    PlainText(String),
     /// Layer name — rendered as a combo_box.
     LayerChoice(String),
     /// Generic string choice rendered as a combo_box.

src/scene/selection.rs

@@ -417,6 +417,7 @@ impl Scene {
                             ])
                         } else {
                             match prop.value {
+                                PropValue::PlainText(_) => QSelectValueEditor::Text,
                                 PropValue::ReadOnly(ref value)
                                 | PropValue::EditText(ref value) => {
                                     let field = prop.field.to_ascii_lowercase();
@@ -614,7 +615,9 @@ impl Scene {
                     .flat_map(|s| s.props)
                     .find(|p| p.field == field)?;
                 Some(match prop.value {
-                    PropValue::ReadOnly(s) | PropValue::EditText(s) => s,
+                    PropValue::ReadOnly(s)
+                    | PropValue::EditText(s)
+                    | PropValue::PlainText(s) => s,
                     PropValue::LayerChoice(s) => s,
                     PropValue::Choice { selected, .. } => selected,
                     PropValue::EditChoice { value, .. } => value,