chore: unify currency symbols across pricing UI and localization files

Author: tianzx

apps/web/components/marketing/price/components/pricing-column.tsx

@@ -186,7 +186,7 @@ export function PricingColumn({
         <p className='text-muted-foreground min-h-[40px] max-w-[220px] text-sm'>
           {monthlyPrice === 0
             ? m['pricing.forever_free']()
-            : `${isYearly ? m['pricing.yearly']() : m['pricing.monthly']()} (${isYearly ? `$${yearlyPrice}/year` : `¥${monthlyPrice}/month`})`}
+            : `${isYearly ? m['pricing.yearly']() : m['pricing.monthly']()} (${isYearly ? `$${yearlyPrice}/year` : `$${monthlyPrice}/month`})`}
         </p>
         <hr className='border-input' />
       </div>

apps/web/messages/zh.json

@@ -96,11 +96,11 @@
     "title_default": "价格方案",
     "description_default": "选择适合您需求的方案，提供量身定制的功能和支持。",
     "free_plan": "免费版",
-    "free_price": "¥0",
+    "free_price": "$0",
     "free_period": "永久免费",
     "free_description": "适合入门使用",
     "pro_plan": "专业版",
-    "pro_price": "¥199",
+    "pro_price": "$199",
     "pro_period": "每月",
     "pro_description": "适合成长中的企业",
     "enterprise_plan": "企业版",