Translate Spielo kit UI/messages to English

Replace German UI strings in SpieloKit with English equivalents (inventory title, button labels, and click lore) and add full English localization for the Spielo kit in en_US.yml. Adds spielo kit entries including name, lore, item names/descriptions, and gamble result messages (instant_death, gamble_event, gamble_bad, gamble_neutral, gamble_good).

src/main/resources/languages/en_US.yml

@@ -605,4 +605,24 @@ kits:
       stunned: '<red>⚡ You are stunned!'
       ult_fired: '<gold>⚡ Static Field hit <count> enemy(s)!'
       ult_cooldown: '<red>Ult on cooldown – <time>s'
-      ult_no_targets: '<red>No enemies in range!'
+      ult_no_targets: '<red>No enemies in range!'
+
+  spielo:
+    name: '<gradient:gold:yellow><bold>Spielo</bold></gradient>'
+    lore:
+      - ' '
+      - '<gray>AGGRESSIVE: Gambling at the push of a button</gray>'
+      - '<gray>DEFENSIVE: Slot machine - no instant death</gray>'
+    items:
+      automat:
+        name: '<gold><bold>Slot Machine</bold></gold>'
+        description: '<gray>Gamble at the push of a button</gray>'
+      slotautomat:
+        name: '<gold><bold>Safe Slot Machine</bold></gold>'
+        description: '<gray>Slot machine - no instant death & diamond armor</gray>'
+    messages:
+      instant_death: '<dark_red><bold>BANKRUPT!</bold></dark_red> <red>You gambled your life away. The house always wins.</red>'
+      gamble_event: '<red><bold>UNLUCKY!</bold></red> <gray>The slot machine triggered a disaster!</gray>'
+      gamble_bad: '<red>Bad spin...</red> <gray>You feel a sudden negative effect.</gray>'
+      gamble_neutral: '<yellow>Meh.</yellow> <gray>Just some useless junk. Spin again!</gray>'
+      gamble_good: '<gold><bold>JACKPOT!</bold></gold> <green>Lady Luck is smiling at you. Enjoy your reward!</green>'