feat(withdraw): build dedicated withdrawal page with optimized layout and multichannel support

pwuniapp/pages.json

@@ -112,6 +112,16 @@
         "backgroundColor": "#0A0F1D"
       }
     },
+    {
+      "path": "pages/user/withdraw",
+      "style": {
+        "navigationStyle": "custom",
+        "navigationBarTitleText": "收益提现",
+        "navigationBarBackgroundColor": "#0A0F1D",
+        "navigationBarTextStyle": "white",
+        "backgroundColor": "#0A0F1D"
+      }
+    },
     {
       "path": "pages/activity/create",
       "style": {