Implement statistics tab aligned with Android and fix summary decode.

Add role-based analyse APIs, summary/daily UI with date range sheet, and flexible parsing for string refund amounts from the backend.

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan/Assets.xcassets/icon_data_statistics_get_amount.imageset/Contents.json

@@ -0,0 +1,8 @@
+{
+  "images": [
+    { "filename": "icon_data_statistics_get_amount.png", "idiom": "universal", "scale": "1x" },
+    { "filename": "icon_data_statistics_get_amount@2x.png", "idiom": "universal", "scale": "2x" },
+    { "filename": "icon_data_statistics_get_amount@3x.png", "idiom": "universal", "scale": "3x" }
+  ],
+  "info": { "author": "xcode", "version": 1 }
+}