Remove internal phase comments and format code

Strip all Phase references, TODO/FUTURE roadmap notes, and internal
planning comments from the codebase. Run Prettier for consistent
formatting across all Java files.

src/main/java/com/tiedup/remake/cells/ConfiscatedInventoryRegistry.java

@@ -22,7 +22,6 @@ import net.minecraft.world.level.saveddata.SavedData;
 import org.jetbrains.annotations.Nullable;
 
 /**
- * Phase 2: SavedData registry for confiscated player inventories.
  *
  * When a player is imprisoned:
  * 1. Their inventory is saved to NBT