feat: 扫描报告页+手动选波长护理+光疗功效介绍页+诊断框架(占位阈值)

- services/diagnosis.js: 诊断流水线框架,阈值/PD映射为占位待标定,支持单波长降级
- auto-scan: 扫描完成改为出报告让用户选择护理(替代原自动开始治疗)
- 新增 scan-report/manual-treatment/light-info 三页,全部接入 i18n
- api.js: 新增 report/diagnosis-config 接口(对接后端契约)

miniprogram/pages/treatment-setup/treatment-setup.js

@@ -25,6 +25,10 @@ Page({
     })
   },
 
+  onManual: function () {
+    wx.navigateTo({ url: '/pages/manual-treatment/manual-treatment' })
+  },
+
   onLoad: function () {
     var app = getApp()
     this.setData({ statusBarHeight: app.globalData.statusBarHeight })