feat: integrate SimpleCADAPI 2.0.2 CAD workflows

SimpleCADAPI/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 the explicit final outputs of the
+active model session. The value is returned unchanged, so it can be used inline
+or assigned back to a local variable.
+
+```python
+@scad.model(graph_id="multi_output_demo")
+def build_model():
+    primary = scad.make_box_rsolid(width=10.0, height=4.0, depth=2.0)
+    secondary = scad.make_cylinder_rsolid(radius=2.0, height=5.0)
+    return scad.capture_result(value=(primary, secondary))
+```
+
+Explicit capture prevents unrelated intermediate graph leaves from becoming
+model outputs. When the enclosing `@model` uses `export_dir=...`, captured
+geometry and product values become roots in the single self-contained Scene ZIP.
+The package embeds model JSON and mapped Python sources; automatic export does
+not create adjacent model/session JSON, STEP, STL, or FCStd files. It must be
+called inside `@model` or another active `GraphSession`.