Dimensions: a file whose dimensions carry options this version doesn't know still opens; commands still refuse unknown options

crates/engine/src/cmd/dimension.rs

@@ -46,9 +46,7 @@ fn error(s: impl ToString) -> EngineError {
 fn options(s: &Session, p: &Value) -> Result<DimensionOptions> {
     let default = s.tool_options_of("dimension");
     let value = p.get("options").cloned().unwrap_or_else(|| default.get("style").cloned().unwrap_or(json!({})));
-    let o: DimensionOptions = serde_json::from_value(value).map_err(error)?;
-    o.validate().map_err(error)?;
-    Ok(o)
+    DimensionOptions::from_params(value).map_err(error)
 }
 
 fn point(p: &Value, key: &str) -> Result<Point> {

crates/engine/src/tooling.rs

@@ -455,8 +455,7 @@ impl Session {
         }
         if tool.unwrap_or(self.tool_id()) == "dimension" {
             if let Some(style) = values.get("style") {
-                let options: vectorcraft_doc::dimension::DimensionOptions = serde_json::from_value(style.clone()).map_err(|e| e.to_string())?;
-                options.validate()?;
+                vectorcraft_doc::dimension::DimensionOptions::from_params(style.clone())?;
             }
             if let Some(mode) = values.get("mode")
                 && !mode.as_str().is_some_and(|m| ["linear", "angular", "radial", "radius", "diameter"].contains(&m))