fix(keygen): disambiguate algos by id and type

* Updates easy-mode profiles to persist both algorithm id and type so
  similarly named algorithms map correctly across backends/versions
* Improves combo-box selection and key-length syncing by matching on
  id+name+type instead of display text, reducing wrong selections
* Hardens hybrid sub-algorithm UI handling and JSON parsing with safer
  defaults, validation, and fallback type inference

Author: saturneric