Inspect Exec Connections

[chrizzFTD]

Allow inspection of exec networks through the ConnectionViewer

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Note

Medium Risk
Touches shared connection-graph code used for UsdShade and new attribute traversal; wrong routing or port IDs could break graph layout or misrepresent rig wiring, though existing shade tests remain and exec coverage is additive.

Overview
Extends the Connections Viewer so rigs and other prims wired through UsdAttribute connection paths (not only UsdShadeConnectableAPI) show an upstream authored graph—covering OpenExec invertible rigs (IrJointScope, IrFkController, IrSwitchController, etc.).

_graph_from_connections now picks shade vs attribute traversal. Attribute mode walks GetConnections(), builds Graphviz nodes with schema type in the header, maps irRole to port colors (inputs, outputs, switches, passthrough), and sanitizes port IDs when names contain : (e.g. posed:space → posed__space). UsdShade graph building shares the same table/port helpers.

Docs for the Connections Viewer describe the dual traversal model, port legend, and that the view is the authored stage graph, not the compiled OpenExec eval network. Adds waddlerRig.usda and test_exec_connection_view to lock in Switch/FK wiring from a joint prim.

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[chrizzFTD]

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