feat(C-01): i18n main commands — 148 translatable keys

Phase 3: Migrate Component.literal() in all remaining command files.
- NPCCommand (34), CellCommand (33), SocialCommand (16), CollarCommand (25),
  KeyCommand (18), BountyCommand (6), KidnapSetCommand (2), CaptivityDebugCommand (7),
  InventorySubCommand (3), TestAnimSubCommand (2), MasterTestSubCommand (7), DebtSubCommand (8)
- Strip all section sign color codes, use .withStyle(ChatFormatting)
- 148 new keys in en_us.json (command.tiedup.*)
- Debug/dynamic strings intentionally kept as literal

src/main/java/com/tiedup/remake/commands/CommandHelper.java

@@ -42,7 +42,7 @@ public final class CommandHelper {
         if (source.getEntity() instanceof ServerPlayer player) {
             return Optional.of(player);
         }
-        source.sendFailure(Component.literal("Must be a player"));
+        source.sendFailure(Component.translatable("command.tiedup.error.must_be_player"));
         return Optional.empty();
     }