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/leaderboard/leaderboard.js

@@ -138,7 +138,6 @@ Page({
       // local data silently. No toast here: empty day-leaderboard is
       // normal (user didn't train today), and a toast would mislead
       // them into thinking the cloud is broken.
-      console.warn('[leaderboard] cloud function failed, using local fallback:', err)
       if (seq !== this._fetchSeq) { if (cb) cb(); return }
       // 已有缓存秒显时后台刷新失败:保持旧数据,不打断用户;仅无缓存才走本地兜底。
       if (cached && cached.rankedList) {

pages/records/records.json

@@ -2,7 +2,8 @@
   "usingComponents": {
     "calendar-heatmap": "/components/calendar-heatmap/calendar-heatmap",
     "trend-chart": "/components/trend-chart/trend-chart",
-    "ui-card": "/components/ui-card/ui-card"
+    "ui-card": "/components/ui-card/ui-card",
+    "ui-skeleton": "/components/ui-skeleton/ui-skeleton"
   },
   "navigationBarTitleText": "训练记录"
 }

pages/settings/settings.js

@@ -187,11 +187,9 @@ Page({
     try {
       permanentUrl = await this._uploadAvatar(avatarUrl)
     } catch (err) {
-      console.warn('[avatar] cloud upload failed, trying base64:', err)
       try {
         permanentUrl = await util.fileToDataURI(avatarUrl)
       } catch (err2) {
-        console.warn('[avatar] base64 convert failed, saving temp URL:', err2)
         permanentUrl = avatarUrl
       }
     }
@@ -377,7 +375,6 @@ Page({
       await cloud.clearAll()
     } catch (e) {
       cloudClearFailed = true
-      console.warn('[settings] cloud clear failed:', e)
     }
 
     // 4. Reinstate default settings and streak

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 })