feat: 修复清除数据、语音缓存、排行榜限制，新增项目配置文件

- 修复 cloud.clearAll 静默失败导致重启后数据恢复
- 清除数据弹窗改用自定义 ui-modal 替代 wx.showModal
- TTS 语音合成增加 fileID 持久化缓存，重启不再重新合成
- 排行榜限制前15名，maxRank 参数化到 config.js
- 新增 config.js 统一管理版本号/更新日期/开发者/排行榜限制
- progress-ring 消除 getSystemInfoSync 弃用警告
- voice.js 增加 InnerAudioContext 错误监听
- storage/util 完善用户资料、打卡日期精度、记录日志

cloudfunctions/leaderboard/index.js

@@ -5,18 +5,28 @@ const _ = db.command
 
 const COLLECTION = 'plank_data'
 const PAGE_SIZE = 100
-const MAX_RANK = 100
+const DEFAULT_MAX_RANK = 100  // fallback if client doesn't pass maxRank
 
 const pad = (n) => String(n).padStart(2, '0')
 
+// Fixed UTC+8 offset — the user base is China-only and `new Date()` in
+// the cloud function runs in UTC, so without this shift "today" rolls
+// over at 08:00 Beijing instead of 00:00. If you ever support users in
+// other timezones, switch back to a client-provided date.
+const TZ_OFFSET_MS = 8 * 60 * 60 * 1000
+
 exports.main = async (event) => {
-  const { period } = event
+  const { period, maxRank } = event || {}
+  const limit = Math.max(1, Math.min(parseInt(maxRank) || DEFAULT_MAX_RANK, 500))
   if (!period) return { err: 'missing period' }
 
   const now = new Date()
-  const today = `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}`
+  const local = new Date(now.getTime() + TZ_OFFSET_MS)
+  const today = `${local.getUTCFullYear()}-${pad(local.getUTCMonth() + 1)}-${pad(local.getUTCDate())}`
   const thisMonth = today.substring(0, 7)
-  const thisYear = String(now.getFullYear())
+  // Year is computed from the same shifted date so year boundaries also
+  // align with Beijing's midnight, not UTC's.
+  const thisYear = String(local.getUTCFullYear())
   const myOpenid = cloud.getWXContext().OPENID
 
   let prefix, exact
@@ -41,7 +51,11 @@ exports.main = async (event) => {
         if (prefix && !monthKey.startsWith(prefix)) continue
         for (const r of records[monthKey]) {
           if (period === 'day') {
-            if (r.date === exact) { duration += r.duration; sessions++ }
+            // Use startsWith rather than === to tolerate date strings with
+            // trailing time/zone info (e.g. "2026-06-11T09:11:24.587Z" if
+            // some legacy path stored an ISO date) and to be timezone-
+            // agnostic when client local date differs from server UTC date.
+            if (r.date.startsWith(exact)) { duration += r.duration; sessions++ }
           } else {
             if (r.date.startsWith(prefix)) { duration += r.duration; sessions++ }
           }
@@ -51,11 +65,19 @@ exports.main = async (event) => {
       if (duration > 0) {
         const openid = doc._openid || 'unknown'
         const entry = userMap.get(openid)
+        const profile = doc.profile || {}
         if (entry) {
           entry.duration += duration
           entry.sessions += sessions
+          // Refresh nickname in case the user updated it since last write
+          if (profile.nickname) entry.nickname = profile.nickname
         } else {
-          userMap.set(openid, { openid, duration, sessions })
+          userMap.set(openid, {
+            openid,
+            duration,
+            sessions,
+            nickname: profile.nickname || ''
+          })
         }
       }
     }
@@ -72,11 +94,18 @@ exports.main = async (event) => {
   const myEntry = userMap.get(myOpenid)
   const myRank = myEntry ? allSorted.findIndex(e => e.openid === myOpenid) + 1 : 0
 
+  // Resolve display name: prefer the user's chosen nickname, fall back to
+  // a masked openid for users who haven't set one.
+  const _displayName = (entry) =>
+    (entry && entry.nickname && entry.nickname.trim()) ||
+    maskOpenid(entry && entry.openid)
+
   // Top N for the board
-  const ranked = allSorted.slice(0, MAX_RANK).map((item, i) => ({
+  const ranked = allSorted.slice(0, limit).map((item, i) => ({
     rank: i + 1,
     openid: item.openid,
-    name: maskOpenid(item.openid),
+    nickname: item.nickname || '',
+    name: _displayName(item),
     duration: item.duration,
     sessions: item.sessions
   }))
@@ -88,7 +117,8 @@ exports.main = async (event) => {
     myEntry: myEntry ? {
       rank: myRank,
       openid: myEntry.openid,
-      name: maskOpenid(myEntry.openid),
+      nickname: myEntry.nickname || '',
+      name: _displayName(myEntry),
       duration: myEntry.duration,
       sessions: myEntry.sessions
     } : null,
@@ -100,4 +130,4 @@ function maskOpenid(openid) {
   if (!openid || openid === 'unknown') return '未知用户'
   if (openid.length <= 4) return '****' + openid
   return '****' + openid.slice(-4)
-}
+}