Release v7.73.1

Fixed

• Corpus agents such as Screenplay Modeler keep their file and shell tools in Pi when the external Agent tool from @tintinweb/pi-subagents launches them. .pi/agents now points at generated Pi-native copies of the corpus agents with Pi tool names, and the Pi package ships them for that loader. Generating them fails when an agent names a tool that has no Pi equivalent. (#519)