fix(ui): tighten date parsing and back navigation

Entire-Checkpoint: fea62b38d8c7

vite-frontend/src/layouts/h5-simple.tsx

@@ -2,6 +2,7 @@ import React from "react";
 import { useNavigate } from "react-router-dom";
 
 import { Button } from "@/shadcn-bridge/heroui/button";
+import { BackIcon } from "@/components/icons";
 import { BrandLogo } from "@/components/brand-logo";
 import { siteConfig } from "@/config/site";
 import { useScrollTopOnPathChange } from "@/hooks/useScrollTopOnPathChange";
@@ -25,13 +26,7 @@ export default function H5SimpleLayout({
       <header className="bg-white dark:bg-black shadow-sm border-b border-gray-200 dark:border-gray-600 h-14 safe-top flex-shrink-0 flex items-center justify-between px-4 relative z-10">
         <div className="flex items-center gap-2">
           <Button isIconOnly size="sm" variant="light" onPress={handleBack}>
-            <svg className="w-5 h-5" fill="currentColor" viewBox="0 0 20 20">
-              <path
-                clipRule="evenodd"
-                d="M12.707 5.293a1 1 0 010 1.414L9.414 10l3.293 3.293a1 1 0 01-1.414 1.414l-4-4a1 1 0 010-1.414l4-4a1 1 0 011.414 0z"
-                fillRule="evenodd"
-              />
-            </svg>
+            <BackIcon className="w-5 h-5" />
           </Button>
           <BrandLogo size={20} />
           <h1 className="text-sm font-bold text-foreground">