Update locale files for English, Traditional Chinese, and Simplified Chinese to include new confirmation prompts for enabling audio effects; refactor EffectsPage and EQPage to integrate FeatureGate for managing effect states and user interactions.

client/src/locales/data-zh.json

@@ -92,7 +92,11 @@
           { "label": "立体声", "index": 1 }
         ]
       }
-    }
+    },
+    "enableConfirmTitle": "音效未开启",
+    "enableConfirmDesc": "当前 Effect 功能已关闭，是否开启？",
+    "enableConfirmOk": "开启",
+    "enableConfirmCancel": "取消"
   },
   "peq": {
     "Standard": "标准均衡器预设",
@@ -226,7 +230,10 @@
       "toastApplyBSuccess": "已将 B 曲线应用到 A",
       "toastApplyBFail": "应用 B 失败",
       "toastSaveBOk": "已另存 B 预设",
-      "toastSaveBFail": "另存 B 失败"
+      "toastSaveBFail": "另存 B 失败",
+      "enableConfirmTitle": "HP-EQ 未开启",
+      "enableConfirmDesc": "当前 HP-EQ 功能已关闭，是否开启？",
+      "enableConfirmOk": "开启"
     }
   },
   "dac": {