ZoneRental

Internal refactoring: Migrated the final four Java command classes to Kotlin.

Kotlin Conversions

• RRCommand.kt - Migrated from Java (467 → 444 lines, 5% reduction)

  • Multi-page help system with when expressions
  • String templates for dynamic prefix interpolation
  • Tab completion with filtered list operations

• RetrieveCommand.kt - Migrated from Java (37 → 28 lines, 24% reduction)

  • Kotlin smart cast for Player type check
  • Property access for plugin managers

• RemoveCommand.kt - Migrated from Java (132 → 124 lines, 6% reduction)

  • buildString {} instead of StringBuilder
  • Null-safe property access with ?.let {}
  • World-aware region parsing preserved

• ReloadCommand.kt - Migrated from Java (27 → 20 lines, 26% reduction)

  • Simple command with idiomatic Kotlin patterns
  • Property access for config manager

Technical Notes

• All commands now in Kotlin - Zero Java command classes remain
• Total line reduction: 663 lines Java → 616 lines Kotlin (7% reduction)
• No user-facing changes - all commands work identically
• src/main/java/com/zonerental/commands/ directory is now empty