feat: integrate SimpleCADAPI 2.0.2 CAD workflows

SimpleCADAPI/docs/api/check_tolerance.md

@@ -0,0 +1,22 @@
+# check_tolerance
+
+## API Definition
+
+```python
+def check_tolerance(value: ScalarLike, tolerance: ToleranceLike, *, method: ToleranceMethod = 'worst_case', name: str | None = None, tolerance_unit: UnitLike | None = None) -> ToleranceCheck
+```
+
+*Source: tolerance.py*
+
+## Import Surface
+
+- top-level: `from simplecadapi import check_tolerance`
+
+## Description
+
+Propagate and verify one Length or Angle requirement.
+
+``tolerance_unit`` defaults to the target dimension's canonical unit. When
+provided, it must be dimensionally compatible and is converted before the
+comparison. Legacy unitless requirements remain supported when no unit is
+supplied.