chore: 上线前优化 — 清理调试日志/启用组件按需注入/补全组件声明

- 移除全项目 34 处调试 console.* 输出
- project.config.json: minified true、uploadWithSourceMap false、启用 lazyCodeLoading(requiredComponents 组件按需注入)
- pages/records/records.json 补全 ui-skeleton 组件声明(此前漏声明,WXML 已使用)
- 删除根目录残留 preview-buttons.html

pages/timer/timer.js

@@ -286,7 +286,7 @@ Page({
     if (s.vibrate === false) return
     const intensity = s.vibrateIntensity || 'heavy'
     const doVibrate = () => {
-      const fail = (err) => console.warn('[vibrate] failed:', err.errMsg || err)
+      const fail = (err) => {}
       if (intensity === 'light') wx.vibrateShort({ type: 'light', fail })
       else if (intensity === 'medium') wx.vibrateShort({ type: 'medium', fail })
       else wx.vibrateLong({ fail })
@@ -452,7 +452,7 @@ Page({
       // vibrateLong is the most reliable on iOS real devices; the short
       // types are nicer but may be silent on some devices - user picks.
       const doVibrate = () => {
-        const fail = (err) => console.warn('[vibrate] failed:', err.errMsg || err)
+        const fail = (err) => {}
         if (intensity === 'light') wx.vibrateShort({ type: 'light', fail })
         else if (intensity === 'medium') wx.vibrateShort({ type: 'medium', fail })
         else wx.vibrateLong({ fail })