Edit Blueprint Switch Cases

Recommended sequence:

1. blueprint_graph_inspect with view: "overview" to find the switch node.
2. If the node has hasNodeEditCapabilities: true, call blueprint_node_inspect.
3. Read editCapabilities and current case pins.
4. schema_inspect for the needed blueprint_node_edit operation.
5. blueprint_node_edit to add, remove, or rename the case.
6. blueprint_compile.

Use blueprint_node_edit for cases. Use blueprint_graph_edit for links and pin defaults around the node.