THBRAID: Change QueenOfMidnight firing time.

* ... to 'ActionStage.action_apply', due to
  SealingArray conflicts.
* And minor ui tunes.
Minor tunes.

* gamehall: compress archive
* start_client: show MessageBox on Windows when failing.
README.md update
Kaguya balance tune.

* and Cirno's code refactoring.