升级pro页：删除选择套餐，保留Pro/VIP方案卡；支付时校验金额匹配；修正product ID为下划线格式

client/src/pages/search/search.vue

@@ -186,6 +186,12 @@ onMounted(() => {
 onUnmounted(() => {
   if (debounceTimer) clearTimeout(debounceTimer)
 })
+
+// 微信小程序分享
+onShareAppMessage(() => ({
+  title: 'AI 维度 - 你的AI知识助手',
+  path: '/pages/index/index'
+}))
 </script>
 
 <style lang="scss" scoped>