Controller ruling on review M-1: PromptManager nodes inside subgraphs run
as "<instance>:<inner>" API IDs, nested instances chaining their IDs. The
overwritten-text check now walks subgraph instances (bounded in depth and
nodes) and reads a text widget stored by name, so these nodes are refused
like top-level ones, anchored or not. A definition without an instance
runs nothing and is ignored.
Review M-5: the historical adapters skip an explicit null prepend or append,
as the 07a5af3 code's "if prepend_text:" did.
Vito Sansevero
2255f91f44