Module strategy 

Algorithm-strategy base trait — port of IpAlgStrategy.hpp.

Every strategy object (line search, mu update, conv check, etc.) implements this so IpoptAlgorithm can call initialize on it after option-loading and before iteration.

Traits

AlgorithmStrategy

Ports Ipopt::AlgorithmStrategyObject. The _jnlst etc. arguments match the upstream signature; concrete strategies pull what they need from the four shared handles.