feat(C-01): i18n SystemMessageManager — 83 translatable keys

Phase 1: Core system message migration to Component.translatable().
- Replace getMessageTemplate() hardcoded strings with getTranslationKey() key derivation
- All send methods now use Component.translatable() with positional args
- Add 83 keys to en_us.json (msg.tiedup.system.*)
- Add sendTranslatable() convenience for external callers with string args
- Migrate 3 external getTemplate() callers (PlayerShockCollar, CellRegistryV2)
- Add resistance_suffix key for sendWithResistance()

src/main/java/com/tiedup/remake/cells/CellRegistryV2.java

@@ -670,13 +670,7 @@ public class CellRegistryV2 extends SavedData {
         if (server == null || ownerId == null) return;
         ServerPlayer owner = server.getPlayerList().getPlayer(ownerId);
         if (owner != null) {
-            String template = SystemMessageManager.getTemplate(category);
-            String formattedMessage = String.format(template, prisonerName);
-            SystemMessageManager.sendToPlayer(
-                owner,
-                category,
-                formattedMessage
-            );
+            SystemMessageManager.sendTranslatable(owner, category, prisonerName);
         }
     }