feat: integrate SimpleCADAPI 2.0.2 CAD workflows

SimpleCADAPI/docs/api/analyze_tolerance.md

@@ -0,0 +1,27 @@
+# analyze_tolerance
+
+## API Definition
+
+```python
+def analyze_tolerance(value: ScalarLike, *, method: ToleranceMethod = 'worst_case') -> ToleranceAnalysis
+```
+
+*Source: tolerance.py*
+
+## Import Surface
+
+- top-level: `from simplecadapi import analyze_tolerance`
+
+## Description
+
+Propagate source manufacturing tolerances through a scalar expression.
+
+``worst_case`` returns guaranteed interval bounds. Affine chains are
+dependency-aware, so repeated variables such as ``x - x`` cancel exactly;
+nonlinear chains use conservative interval arithmetic. ``rss`` performs a
+first-order root-sum-square calculation using analytic sensitivities.
+
+Unit-aware variables are converted to canonical CAD units before
+propagation. The returned analysis reports the inferred physical dimension
+and canonical result unit. Every variable in the expression must declare a
+source tolerance.