feat: integrate SimpleCADAPI 2.0.2 CAD workflows

SimpleCADAPI/skills/simplecadapi/references/docs/api/capture_result.md

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+# capture_result
+
+## API Definition
+
+```python
+def capture_result(*, value: Any) -> Any
+```
+
+*Source: graph.py*
+
+## Import Surface
+
+- top-level: `from simplecadapi import capture_result`
+
+## Description
+
+Mark the graph nodes represented by `value` as explicit final outputs of the
+active model session. The value is returned unchanged. Explicit capture keeps
+intermediate/debug graph leaves out of `ModelResult.model_json`. Captured
+geometry/product values are also the inputs to automatic artifact export when
+the model decorator receives `export_dir=...`.
+
+```python
+@scad.model(graph_id="demo")
+def build_demo():
+    body = scad.make_box_rsolid(width=10.0, height=4.0, depth=2.0)
+    return scad.capture_result(value=body)
+```
+
+Call it inside `@model` or another active `GraphSession`.