- Replaced manual region search loops with a new `find` method in RegionRegistry for improved readability and efficiency.
- Updated `GravityFlipToggleSubCommand` and `GravityFlipTpSubCommand` to utilize the new method for finding regions by name.
- Enhanced the `add` method in RegionRegistry to use the `find` method for checking existing region names.
- Reduce javadocs to one-liners across config/region/physics/tick/viz/plugin root
- Translate residual French comments; no behavioural change
- Tests adjusted where assertions referenced French strings
- RegionRegistry.refreshFor dispatche scan ECS + publishSnapshot via world.execute
- Publication devient asynchrone (1-tick staleness max, borne par tick loop @100ms)
- Null-path enabled.isEmpty publie directement (pas de travail ECS requis)
- Amendement D-04 du plan 03-01 : world.execute requis côté initiation de forEachEntityParallel