Preserve stolen intel evidence and safely clean up spent folders

tests/test_progression_identity.py

@@ -30,7 +30,7 @@ struct Mode {
  Point PrisonPosition(){return {0};}bool Transition(int phase){m_Phase=phase;transitions++;return true;}
 '''+cpp(unlock)+'''
 };
-struct Discovery {Mode* m_Mode=nullptr;int inventoryReads=0;
+struct Discovery {Mode* m_Mode=nullptr;int inventoryReads=0;bool m_Stopped=false;
 '''+cpp(prefix)+'''
 };
 int main(){