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);
         }
     }
 

src/main/java/com/tiedup/remake/core/SystemMessageManager.java

@@ -138,120 +138,17 @@ public class SystemMessageManager {
         ERROR, // Generic error
     }
 
-    // MESSAGE TEMPLATES
+    // TRANSLATION KEYS
 
     /**
-     * Get the raw message template for a category.
-     * Use this when you need to customize the message.
+     * Get the translation key for a category.
+     * Keys follow the pattern: msg.tiedup.system.<category_lowercase>
      *
      * @param category The message category
-     * @return The template string (may contain %s placeholders)
+     * @return The translation key (for use with Component.translatable)
      */
-    public static String getTemplate(MessageCategory category) {
-        return getMessageTemplate(category);
-    }
-
-    /**
-     * Get message template for a category.
-     * Use %s for entity name placeholder.
-     */
-    private static String getMessageTemplate(MessageCategory category) {
-        return switch (category) {
-            // Restraint actions
-            case BEING_TIED -> "%s is tying you up!";
-            case TIED_UP -> "%s tied you up, you can't move!";
-            case BEING_GAGGED -> "%s is gagging you!";
-            case GAGGED -> "%s gagged you, you can't speak!";
-            case BEING_BLINDFOLDED -> "%s is blindfolding you!";
-            case BLINDFOLDED -> "%s blindfolded you, you can't see!";
-            case BEING_COLLARED -> "%s is putting a collar on you!";
-            case COLLARED -> "%s collared you!";
-            case EARPLUGS_ON -> "%s put earplugs on you!";
-            case MITTENS_ON -> "%s put mittens on you!";
-            case ENSLAVED -> "You have been enslaved by %s!";
-            // Restraint actions (kidnapper's perspective)
-            case TYING_TARGET -> "You are tying %s...";
-            case TIED_TARGET -> "You tied %s!";
-            case GAGGING_TARGET -> "You are gagging %s...";
-            case GAGGED_TARGET -> "You gagged %s!";
-            case BLINDFOLDING_TARGET -> "You are blindfolding %s...";
-            case BLINDFOLDED_TARGET -> "You blindfolded %s!";
-            case COLLARING_TARGET -> "You are collaring %s...";
-            case COLLARED_TARGET -> "You collared %s!";
-            // Release actions
-            case UNTIED -> "%s untied you!";
-            case UNGAGGED -> "%s removed your gag!";
-            case UNBLINDFOLDED -> "%s removed your blindfold!";
-            case UNCOLLARED -> "%s removed your collar!";
-            case FREED -> "You have been freed!";
-            // Struggle
-            case STRUGGLE_SUCCESS -> "You feel the ropes loosening...";
-            case STRUGGLE_FAIL -> "You struggle against the ropes, but they hold tight.";
-            case STRUGGLE_BROKE_FREE -> "You broke free!";
-            case STRUGGLE_SHOCKED -> "You were shocked for struggling!";
-            case STRUGGLE_COLLAR_SUCCESS -> "You manage to damage the lock!";
-            case STRUGGLE_COLLAR_FAIL -> "You try to reach the lock, but can't get a good grip.";
-            // Restrictions (Tied)
-            case CANT_MOVE -> "You can't move while tied!";
-            case CANT_ATTACK_TIED -> "You can't attack while tied!";
-            case CANT_USE_ITEM_TIED -> "You can't use items while tied!";
-            case CANT_OPEN_INVENTORY -> "You can't open inventory while tied!";
-            case CANT_INTERACT_TIED -> "You can't interact while tied!";
-            case CANT_SPEAK -> "You can't speak while gagged!";
-            case CANT_SEE -> "You can't see while blindfolded!";
-            case CANT_BREAK_TIED -> "You can't break blocks while tied!";
-            case CANT_PLACE_TIED -> "You can't place blocks while tied!";
-            case NO_ELYTRA -> "You can't fly with elytra while tied!";
-            // Restrictions (Mittens)
-            case CANT_ATTACK_MITTENS -> "You can't attack with mittens on!";
-            case CANT_USE_ITEM_MITTENS -> "You can't use items with mittens on!";
-            case CANT_INTERACT_MITTENS -> "You can't interact with mittens on!";
-            case CANT_BREAK_MITTENS -> "You can't break blocks with mittens on!";
-            case CANT_PLACE_MITTENS -> "You can't place blocks with mittens on!";
-            // Slave system
-            case SLAVE_COMMAND -> "Your master commands: %s";
-            case SLAVE_SHOCK -> "You've been shocked!";
-            case GPS_ZONE_VIOLATION -> "You've been shocked! Return back to your allowed area!";
-            case GPS_OWNER_ALERT -> "ALERT: %s is outside the safe zone!";
-            case SLAVE_JOB_ASSIGNED -> "Job assigned: bring %s";
-            case SLAVE_JOB_COMPLETE -> "Job complete! You are free.";
-            case SLAVE_JOB_FAILED -> "Job failed!";
-            case SLAVE_JOB_LAST_CHANCE -> "LAST CHANCE! Next failure means death!";
-            case SLAVE_JOB_KILLED -> "You were executed for failing your task.";
-            // Tighten
-            case BINDS_TIGHTENED -> "%s tightened your binds!";
-            // Tools & Items
-            case KEY_CLAIMED -> "Key claimed and linked to %s!";
-            case KEY_NOT_OWNER -> "You don't own this key!";
-            case KEY_WRONG_TARGET -> "This key doesn't fit this collar!";
-            case LOCATOR_CLAIMED -> "Locator claimed!";
-            case LOCATOR_NOT_OWNER -> "You don't own this locator!";
-            case LOCATOR_DETECTED -> "Target detected: %s";
-            case SHOCKER_CLAIMED -> "Shocker claimed!";
-            case SHOCKER_NOT_OWNER -> "You don't own this shocker!";
-            case SHOCKER_MODE_SET -> "Shocker mode: %s";
-            case SHOCKER_TRIGGERED -> "Shocked %s!";
-            case RAG_DRY -> "The rag is dry - soak it first";
-            case RAG_SOAKED -> "You soaked the rag with chloroform";
-            case RAG_EVAPORATED -> "The chloroform has evaporated";
-            // Bounty
-            case BOUNTY_CREATED -> "Bounty created on %s!";
-            case BOUNTY_CLAIMED -> "You claimed the bounty on %s!";
-            case BOUNTY_EXPIRED -> "Bounty on %s expired";
-            // Cell System
-            case PRISONER_ARRIVED -> "%s has been placed in your cell";
-            case PRISONER_ESCAPED -> "%s has escaped from your cell!";
-            case PRISONER_RELEASED -> "%s has been released from your cell";
-            case CELL_BREACH -> "Your cell wall has been breached!";
-            case CELL_ASSIGNED -> "You have been assigned to %s's cell";
-            case CELL_CREATED -> "Cell created successfully";
-            case CELL_DELETED -> "Cell deleted";
-            case CELL_RENAMED -> "Cell renamed to: %s";
-            // Generic
-            case INFO -> "%s";
-            case WARNING -> "%s";
-            case ERROR -> "%s";
-        };
+    public static String getTranslationKey(MessageCategory category) {
+        return "msg.tiedup.system." + category.name().toLowerCase();
     }
 
     /**
@@ -373,11 +270,11 @@ public class SystemMessageManager {
 
     /**
      * Send a system message to a player's action bar.
-     * Uses category template with entity name.
+     * Uses translatable category with entity name as argument.
      *
      * @param player The player to send to
      * @param category The message category
-     * @param actor The entity performing the action (for %s replacement)
+     * @param actor The entity performing the action (for %1$s replacement)
      */
     public static void sendToPlayer(
         Player player,
@@ -387,14 +284,23 @@ public class SystemMessageManager {
         if (player == null) return;
 
         String actorName = actor != null ? getEntityName(actor) : "Someone";
-        String message = String.format(getMessageTemplate(category), actorName);
+        MutableComponent component = Component.translatable(
+            getTranslationKey(category), actorName
+        ).withStyle(style -> style.withColor(getCategoryColor(category)));
 
-        sendToPlayer(player, message, getCategoryColor(category));
+        player.displayClientMessage(component, true);
+
+        TiedUpMod.LOGGER.debug(
+            "[SystemMessage] -> {}: {} ({})",
+            player.getName().getString(),
+            getTranslationKey(category),
+            actorName
+        );
     }
 
     /**
      * Send a system message to a player's action bar.
-     * Uses category template without entity (for messages that don't need one).
+     * Uses translatable category without arguments.
      *
      * @param player The player to send to
      * @param category The message category
@@ -402,12 +308,22 @@ public class SystemMessageManager {
     public static void sendToPlayer(Player player, MessageCategory category) {
         if (player == null) return;
 
-        String message = getMessageTemplate(category);
-        sendToPlayer(player, message, getCategoryColor(category));
+        MutableComponent component = Component.translatable(
+            getTranslationKey(category)
+        ).withStyle(style -> style.withColor(getCategoryColor(category)));
+
+        player.displayClientMessage(component, true);
+
+        TiedUpMod.LOGGER.debug(
+            "[SystemMessage] -> {}: {}",
+            player.getName().getString(),
+            getTranslationKey(category)
+        );
     }
 
     /**
      * Send a custom system message to a player's action bar.
+     * Uses literal text (for dynamic/non-translatable messages).
      *
      * @param player The player to send to
      * @param message The message to send
@@ -420,12 +336,10 @@ public class SystemMessageManager {
     ) {
         if (player == null || message == null) return;
 
-        // Works on both client and server
         MutableComponent component = Component.literal(message).withStyle(
             style -> style.withColor(color)
         );
 
-        // true = action bar (above hotbar), false = chat
         player.displayClientMessage(component, true);
 
         TiedUpMod.LOGGER.debug(
@@ -437,6 +351,7 @@ public class SystemMessageManager {
 
     /**
      * Send a custom system message to a player's CHAT.
+     * Uses literal text (for dynamic/non-translatable messages).
      *
      * @param player The player to send to
      * @param message The message to send
@@ -453,7 +368,6 @@ public class SystemMessageManager {
             style -> style.withColor(color)
         );
 
-        // false = chat
         player.displayClientMessage(component, false);
 
         TiedUpMod.LOGGER.debug(
@@ -464,19 +378,21 @@ public class SystemMessageManager {
     }
 
     /**
-     * Send a system message to a player's CHAT using a category.
+     * Send a system message to a player's CHAT using a translatable category.
      */
     public static void sendChatToPlayer(
         Player player,
         MessageCategory category
     ) {
         if (player == null) return;
-        String message = getMessageTemplate(category);
-        sendChatToPlayer(player, message, getCategoryColor(category));
+        MutableComponent component = Component.translatable(
+            getTranslationKey(category)
+        ).withStyle(style -> style.withColor(getCategoryColor(category)));
+        player.displayClientMessage(component, false);
     }
 
     /**
-     * Send a system message to a player's CHAT using a category and actor.
+     * Send a system message to a player's CHAT using a translatable category and actor.
      */
     public static void sendChatToPlayer(
         Player player,
@@ -485,8 +401,10 @@ public class SystemMessageManager {
     ) {
         if (player == null) return;
         String actorName = actor != null ? getEntityName(actor) : "Someone";
-        String message = String.format(getMessageTemplate(category), actorName);
-        sendChatToPlayer(player, message, getCategoryColor(category));
+        MutableComponent component = Component.translatable(
+            getTranslationKey(category), actorName
+        ).withStyle(style -> style.withColor(getCategoryColor(category)));
+        player.displayClientMessage(component, false);
     }
 
     /**
@@ -494,7 +412,7 @@ public class SystemMessageManager {
      *
      * @param player The player to send to
      * @param category The category (for color)
-     * @param customMessage The custom message text
+     * @param customMessage The custom message text (literal, not translatable)
      */
     public static void sendToPlayer(
         Player player,
@@ -505,7 +423,27 @@ public class SystemMessageManager {
     }
 
     /**
-     * Send a message with resistance info appended.
+     * Send a translatable message with string arguments.
+     * Uses the category's translation key and color.
+     *
+     * @param player The player to send to
+     * @param category The message category
+     * @param args Arguments for the translation (replaces %1$s, %2$s, etc.)
+     */
+    public static void sendTranslatable(
+        Player player,
+        MessageCategory category,
+        Object... args
+    ) {
+        if (player == null) return;
+        MutableComponent component = Component.translatable(
+            getTranslationKey(category), args
+        ).withStyle(style -> style.withColor(getCategoryColor(category)));
+        player.displayClientMessage(component, true);
+    }
+
+    /**
+     * Send a translatable message with resistance info appended.
      *
      * @param player The player to send to
      * @param category The message category
@@ -518,9 +456,13 @@ public class SystemMessageManager {
     ) {
         if (player == null) return;
 
-        String message =
-            getMessageTemplate(category) + " (Resistance: " + resistance + ")";
-        sendToPlayer(player, message, getCategoryColor(category));
+        MutableComponent component = Component.translatable(
+            getTranslationKey(category)
+        ).append(
+            Component.translatable("msg.tiedup.system.resistance_suffix", resistance)
+        ).withStyle(style -> style.withColor(getCategoryColor(category)));
+
+        player.displayClientMessage(component, true);
     }
 
     // SEND METHODS - TO NEARBY PLAYERS
@@ -695,15 +637,10 @@ public class SystemMessageManager {
      */
     public static void sendJobAssigned(Player player, String itemName) {
         if (player == null) return;
-        String message = String.format(
-            getMessageTemplate(MessageCategory.SLAVE_JOB_ASSIGNED),
-            itemName
-        );
-        sendToPlayer(
-            player,
-            message,
-            getCategoryColor(MessageCategory.SLAVE_JOB_ASSIGNED)
-        );
+        MutableComponent component = Component.translatable(
+            getTranslationKey(MessageCategory.SLAVE_JOB_ASSIGNED), itemName
+        ).withStyle(style -> style.withColor(getCategoryColor(MessageCategory.SLAVE_JOB_ASSIGNED)));
+        player.displayClientMessage(component, true);
     }
 
     // UTILITY

src/main/java/com/tiedup/remake/state/components/PlayerShockCollar.java

@@ -15,6 +15,8 @@ import com.tiedup.remake.v2.bondage.datadriven.DataDrivenBondageItem;
 import java.util.List;
 import java.util.UUID;
 import net.minecraft.ChatFormatting;
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.chat.MutableComponent;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
@@ -99,12 +101,11 @@ public class PlayerShockCollar {
         // HUD Message via SystemMessageManager
         if (messageAddon != null) {
             // Custom message with addon (e.g., GPS violation)
-            SystemMessageManager.sendToPlayer(
-                player,
-                MessageCategory.SLAVE_SHOCK,
-                SystemMessageManager.getTemplate(MessageCategory.SLAVE_SHOCK) +
-                    messageAddon
-            );
+            MutableComponent msg = Component.translatable(
+                SystemMessageManager.getTranslationKey(MessageCategory.SLAVE_SHOCK)
+            ).append(Component.literal(messageAddon));
+            msg.withStyle(style -> style.withColor(ChatFormatting.RED));
+            player.displayClientMessage(msg, true);
         } else {
             SystemMessageManager.sendToPlayer(
                 player,
@@ -239,11 +240,8 @@ public class PlayerShockCollar {
 
         if (!CollarHelper.shouldWarnMasters(stack)) return;
 
-        // Format: "ALERT: <player name> is outside the safe zone!"
-        String alertMessage = String.format(
-            SystemMessageManager.getTemplate(MessageCategory.GPS_OWNER_ALERT),
-            player.getName().getString()
-        );
+        // Translatable: "ALERT: <player name> is outside the safe zone!"
+        String playerName = player.getName().getString();
 
         for (UUID ownerId : CollarHelper.getOwners(stack)) {
             ServerPlayer owner = player
@@ -253,8 +251,8 @@ public class PlayerShockCollar {
             if (owner != null) {
                 SystemMessageManager.sendChatToPlayer(
                     owner,
-                    alertMessage,
-                    ChatFormatting.RED
+                    MessageCategory.GPS_OWNER_ALERT,
+                    player
                 );
             }
         }

src/main/resources/assets/tiedup/lang/en_us.json

@@ -687,5 +687,89 @@
   "gui.tiedup.status.key_info": "Key: %s",
   "gui.tiedup.status.no_key": "No key",
   "gui.tiedup.status.target_info": "Target: %s",
-  "gui.tiedup.status_bar": "Status bar"
+  "gui.tiedup.status_bar": "Status bar",
+
+  "msg.tiedup.system.being_tied": "%1$s is tying you up!",
+  "msg.tiedup.system.tied_up": "%1$s tied you up, you can't move!",
+  "msg.tiedup.system.being_gagged": "%1$s is gagging you!",
+  "msg.tiedup.system.gagged": "%1$s gagged you, you can't speak!",
+  "msg.tiedup.system.being_blindfolded": "%1$s is blindfolding you!",
+  "msg.tiedup.system.blindfolded": "%1$s blindfolded you, you can't see!",
+  "msg.tiedup.system.being_collared": "%1$s is putting a collar on you!",
+  "msg.tiedup.system.collared": "%1$s collared you!",
+  "msg.tiedup.system.earplugs_on": "%1$s put earplugs on you!",
+  "msg.tiedup.system.mittens_on": "%1$s put mittens on you!",
+  "msg.tiedup.system.enslaved": "You have been enslaved by %1$s!",
+  "msg.tiedup.system.tying_target": "You are tying %1$s...",
+  "msg.tiedup.system.tied_target": "You tied %1$s!",
+  "msg.tiedup.system.gagging_target": "You are gagging %1$s...",
+  "msg.tiedup.system.gagged_target": "You gagged %1$s!",
+  "msg.tiedup.system.blindfolding_target": "You are blindfolding %1$s...",
+  "msg.tiedup.system.blindfolded_target": "You blindfolded %1$s!",
+  "msg.tiedup.system.collaring_target": "You are collaring %1$s...",
+  "msg.tiedup.system.collared_target": "You collared %1$s!",
+  "msg.tiedup.system.untied": "%1$s untied you!",
+  "msg.tiedup.system.ungagged": "%1$s removed your gag!",
+  "msg.tiedup.system.unblindfolded": "%1$s removed your blindfold!",
+  "msg.tiedup.system.uncollared": "%1$s removed your collar!",
+  "msg.tiedup.system.freed": "You have been freed!",
+  "msg.tiedup.system.struggle_success": "You feel the ropes loosening...",
+  "msg.tiedup.system.struggle_fail": "You struggle against the ropes, but they hold tight.",
+  "msg.tiedup.system.struggle_broke_free": "You broke free!",
+  "msg.tiedup.system.struggle_shocked": "You were shocked for struggling!",
+  "msg.tiedup.system.struggle_collar_success": "You manage to damage the lock!",
+  "msg.tiedup.system.struggle_collar_fail": "You try to reach the lock, but can't get a good grip.",
+  "msg.tiedup.system.cant_move": "You can't move while tied!",
+  "msg.tiedup.system.cant_attack_tied": "You can't attack while tied!",
+  "msg.tiedup.system.cant_use_item_tied": "You can't use items while tied!",
+  "msg.tiedup.system.cant_open_inventory": "You can't open inventory while tied!",
+  "msg.tiedup.system.cant_interact_tied": "You can't interact while tied!",
+  "msg.tiedup.system.cant_speak": "You can't speak while gagged!",
+  "msg.tiedup.system.cant_see": "You can't see while blindfolded!",
+  "msg.tiedup.system.cant_break_tied": "You can't break blocks while tied!",
+  "msg.tiedup.system.cant_place_tied": "You can't place blocks while tied!",
+  "msg.tiedup.system.no_elytra": "You can't fly with elytra while tied!",
+  "msg.tiedup.system.cant_attack_mittens": "You can't attack with mittens on!",
+  "msg.tiedup.system.cant_use_item_mittens": "You can't use items with mittens on!",
+  "msg.tiedup.system.cant_interact_mittens": "You can't interact with mittens on!",
+  "msg.tiedup.system.cant_break_mittens": "You can't break blocks with mittens on!",
+  "msg.tiedup.system.cant_place_mittens": "You can't place blocks with mittens on!",
+  "msg.tiedup.system.slave_command": "Your master commands: %1$s",
+  "msg.tiedup.system.slave_shock": "You've been shocked!",
+  "msg.tiedup.system.gps_zone_violation": "You've been shocked! Return back to your allowed area!",
+  "msg.tiedup.system.gps_owner_alert": "ALERT: %1$s is outside the safe zone!",
+  "msg.tiedup.system.slave_job_assigned": "Job assigned: bring %1$s",
+  "msg.tiedup.system.slave_job_complete": "Job complete! You are free.",
+  "msg.tiedup.system.slave_job_failed": "Job failed!",
+  "msg.tiedup.system.slave_job_last_chance": "LAST CHANCE! Next failure means death!",
+  "msg.tiedup.system.slave_job_killed": "You were executed for failing your task.",
+  "msg.tiedup.system.binds_tightened": "%1$s tightened your binds!",
+  "msg.tiedup.system.key_claimed": "Key claimed and linked to %1$s!",
+  "msg.tiedup.system.key_not_owner": "You don't own this key!",
+  "msg.tiedup.system.key_wrong_target": "This key doesn't fit this collar!",
+  "msg.tiedup.system.locator_claimed": "Locator claimed!",
+  "msg.tiedup.system.locator_not_owner": "You don't own this locator!",
+  "msg.tiedup.system.locator_detected": "Target detected: %1$s",
+  "msg.tiedup.system.shocker_claimed": "Shocker claimed!",
+  "msg.tiedup.system.shocker_not_owner": "You don't own this shocker!",
+  "msg.tiedup.system.shocker_mode_set": "Shocker mode: %1$s",
+  "msg.tiedup.system.shocker_triggered": "Shocked %1$s!",
+  "msg.tiedup.system.rag_dry": "The rag is dry - soak it first",
+  "msg.tiedup.system.rag_soaked": "You soaked the rag with chloroform",
+  "msg.tiedup.system.rag_evaporated": "The chloroform has evaporated",
+  "msg.tiedup.system.bounty_created": "Bounty created on %1$s!",
+  "msg.tiedup.system.bounty_claimed": "You claimed the bounty on %1$s!",
+  "msg.tiedup.system.bounty_expired": "Bounty on %1$s expired",
+  "msg.tiedup.system.prisoner_arrived": "%1$s has been placed in your cell",
+  "msg.tiedup.system.prisoner_escaped": "%1$s has escaped from your cell!",
+  "msg.tiedup.system.prisoner_released": "%1$s has been released from your cell",
+  "msg.tiedup.system.cell_breach": "Your cell wall has been breached!",
+  "msg.tiedup.system.cell_assigned": "You have been assigned to %1$s's cell",
+  "msg.tiedup.system.cell_created": "Cell created successfully",
+  "msg.tiedup.system.cell_deleted": "Cell deleted",
+  "msg.tiedup.system.cell_renamed": "Cell renamed to: %1$s",
+  "msg.tiedup.system.info": "%1$s",
+  "msg.tiedup.system.warning": "%1$s",
+  "msg.tiedup.system.error": "%1$s",
+  "msg.tiedup.system.resistance_suffix": " (Resistance: %1$s)"
 }