Update locale files for English, Traditional Chinese, and Simplified Chinese to include new effect titles and crossfeed options; refactor EffectsPage to utilize localized labels and improve state management for audio effects.

client/src/locales/data-zh.json

@@ -29,6 +29,9 @@
     "output": { "headset": "耳机" }
   },
   "effect": {
+    "pageTitle": "音效",
+    "selectStyleTitle": "选择音效风格",
+    "selectCrossfeedTitle": "选择交叉反馈模式",
     "lowBass": "低音",
     "enterBass": "中音",
     "highBass": "高音",
@@ -39,7 +42,7 @@
     "mainframeCase": "主机箱",
     "subwooferUnit": "低音炮",
     "style": {
-      "label": "Style",
+      "label": "风格",
       "options": [
         { "index": 0, "label": "古典" },
         { "index": 1, "label": "舞曲" },
@@ -60,7 +63,14 @@
       ]
     },
     "stereoWidth": { "label": "声场宽度" },
-    "crossfeed": { "label": "交叉反馈" },
+    "crossfeed": {
+      "label": "交叉反馈",
+      "options": [
+        "BS2B default(700Hz,4.5dB)",
+        "BS2B polular(700Hz,6dB)",
+        "BS2B relax(650Hz,9.5dB)"
+      ]
+    },
     "subwoofer": {
       "label": "低音炮输出",
       "freq": "低通频率",