更新小程序 API 基础地址，调整阅读页面逻辑以支持免费内容展示，新增提现审批逻辑的二次校验，确保用户可提现金额准确。优化相关注释以提升代码可读性。

miniprogram/pages/read/read.js

@@ -227,7 +227,7 @@ Page({
         section.price = sectionPrice
       }
       this.setData({ section })
-      
+
       let res = prefetched
       if (!res) {
         res = mid
@@ -250,6 +250,16 @@ Page({
         if (accessManager.canAccessFullContent(accessState)) {
           app.markSectionAsRead(id)
         }
+        // 0元即免费：接口返回 price 为 0 或 isFree 为 true 时，不展示付费墙
+        const isFreeByPrice = res.price === 0 || res.price === '0' || Number(res.price) === 0
+        const isFreeByFlag = res.isFree === true
+        if (isFreeByPrice || isFreeByFlag) {
+          const section = this.data.section || {}
+          if (res.price !== undefined && res.price !== null) section.price = Number(res.price)
+          if (res.isFree !== undefined) section.isFree = !!res.isFree
+          this.setData({ section, showPaywall: false, canAccess: true, accessState: 'free' })
+          app.markSectionAsRead(id)
+        }
         setTimeout(() => this.drawShareCard(), 600)
       }
     } catch (e) {