Execute one agent whiteboard tool against the state engine (author 'agent', one undo
batch per call) and return the JSON result string for the tool round-trip.
Never throws: malformed args / unknown tools / unknown item IDs return a
{ success: false, error } payload so the model can self-correct conversationally.
Execute one agent whiteboard tool against the state engine (author
'agent', one undo batch per call) and return the JSON result string for the tool round-trip.Never throws: malformed args / unknown tools / unknown item IDs return a
{ success: false, error }payload so the model can self-correct conversationally.