remove_variable / rename_variable return UNKNOWN_ACTION (cannot delete/rename a variable)

[katyoid]

Summary

There is no way to delete or rename a Blueprint variable through the bridge: remove_variable and rename_variable return UNKNOWN_ACTION, even though they appear in the tool schema.

Environment

• Plugin MCP Automation Bridge (previous reports were v0.5.30 — please confirm current version)
• Unreal Engine 5.6.1; OS: Windows editor, client on WSL2
• MCP client: claude-code (native WebSocket/HTTP transport)

Steps to reproduce

manage_blueprint  action=remove_variable  blueprintPath=/Game/.../MyBlueprint  variableName=TmpVar
→ Error [UNKNOWN_ACTION]: Unknown blueprint action: remove_variable

manage_blueprint  action=rename_variable  ...
→ Error [UNKNOWN_ACTION]: Unknown blueprint action: rename_variable

Actual

Both actions are advertised by the schema but not implemented. Consequence: a mistyped/experimental variable can't be removed or renamed programmatically. In Python only BlueprintEditorLibrary.remove_unused_variables exists, which removes all unreferenced variables (would delete unrelated ones) — unsafe for targeted cleanup, so the variable must be removed by hand.

Expected

remove_variable and rename_variable implemented (targeted, by name). If they can't be supported, they should be removed from the schema so they don't appear available.

Acceptance

• remove_variable name=X removes only variable X; blueprint compiles.
• rename_variable oldName=X newName=Y renames X→Y and updates references.

[Fl0p]

Fix forwarded upstream: ChiR24#590 (targeting dev). Still flagged as needing in-editor verification by a maintainer.