feat(i18n): complete migration — items, entities, AI goals, GUI screens

119 new translation keys across 3 domains:
- Items/Blocks/Misc (46 keys): tooltips, action messages, trap states
- Entities/AI Goals (55 keys): NPC speech, maid/master/guard messages
- Client GUI (18 keys): widget labels, screen buttons, merchant display

Remaining 119 Component.literal() are all intentional:
- Debug/Admin/Command wands (47) — dev tools, not player-facing
- Entity display names (~25) — dynamic getNpcName() calls
- Empty string roots (~15) — .append() chain bases
- User-typed text (~10) — /me, /pm, /norp chat content
- Runtime data (~12) — StringBuilder, gag muffling, MCA compat

src/main/java/com/tiedup/remake/entities/EntitySlaveTrader.java

@@ -200,8 +200,8 @@ public class EntitySlaveTrader extends EntityKidnapperElite {
                         Component.literal("[" + this.getNpcName() + "] ")
                             .withStyle(Style.EMPTY.withColor(TRADER_NAME_COLOR))
                             .append(
-                                Component.literal(
-                                    "You don't have a trader token. Leave now, or I'll make you leave."
+                                Component.translatable(
+                                    "entity.tiedup.trader.no_token_warning"
                                 ).withStyle(ChatFormatting.RED)
                             )
                     );
@@ -711,8 +711,8 @@ public class EntitySlaveTrader extends EntityKidnapperElite {
         ServerLevel level,
         BlockPos campCenter
     ) {
-        Component message = Component.literal(
-            "A slave trader camp has been destroyed!"
+        Component message = Component.translatable(
+            "entity.tiedup.trader.camp_destroyed"
         ).withStyle(ChatFormatting.GOLD, ChatFormatting.BOLD);
 
         // Send to all players within 200 blocks