feat: integrate SimpleCADAPI 2.0.2 CAD workflows

SimpleCADAPI/docs/api/UnitValidationError.md

@@ -0,0 +1,17 @@
+# UnitValidationError
+
+## Class Definition
+
+```python
+class UnitValidationError
+```
+
+*Source: units.py*
+
+## Import Surface
+
+- top-level: `from simplecadapi import UnitValidationError`
+
+## Description
+
+Raised when units or expression dimensions are physically inconsistent.