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/tts/index.js

@@ -1,18 +1,11 @@
 // Cloud function: synthesize the 4 fixed training-voice prompts.
 //
-// We do NOT cache on the server. Two reasons:
-//   1. Caching via cloud storage requires self-constructing a fileID of
-//      the form `cloud://<full-env-id>/...`, but `getWXContext().ENV`
-//      only returns the simple env id. Mismatched → unopenable fileID.
-//   2. Caching via the cloud database requires `cloud.database()` at
-//      top level, which on this WeChat cloud runtime crashes the SCF
-//      framework's `writeRuntimeFile` step (it can't toString() the
-//      error object the SDK throws).
-//
-// The client (`utils/voice.js`) caches audioUrls in memory per session,
-// so each of the 4 prompts is synthesized at most once per app launch.
-// Re-synthesizing on app restart is fine — 800万 chars/month free tier
-// covers 4 × ~30 chars × thousands of restarts per month.
+// Caching strategy: the client stores the permanent `fileID` returned by
+// the first successful synthesis in local storage. On subsequent calls it
+// passes `fileID` back to us; we call `getTempFileURL` with it to get a
+// fresh temporary URL instantly (no synthesis, no upload). If the cached
+// fileID is stale (file deleted from cloud storage), we fall through and
+// re-synthesize, returning the new fileID so the client can update its cache.
 //
 // Configuration (云开发控制台 → 云函数 → tts → 函数配置 → 环境变量):
 //   TTS_SECRET_ID   — Tencent Cloud API key id
@@ -76,12 +69,27 @@ const _upload = async (key, buffer) => {
 }
 
 exports.main = async (event) => {
-  const { promptKey } = event || {}
+  const { promptKey, fileID } = event || {}
   const text = PROMPTS[promptKey]
   if (!text) {
     return { success: false, error: `Unknown prompt key: ${promptKey}` }
   }
 
+  // If the client passed a cached fileID, try to get a fresh temp URL
+  // from it — this is the fast path (no synthesis, no upload).
+  if (fileID) {
+    try {
+      const urlRes = await cloud.getTempFileURL({ fileList: [fileID] })
+      const url = urlRes.fileList[0].tempFileURL
+      if (url) {
+        return { success: true, audioUrl: url, fileID, text, cached: true }
+      }
+    } catch (e) {
+      // fileID stale or file deleted — fall through to re-synthesize
+    }
+  }
+
+  // Slow path: synthesize + upload + return fresh fileID for caching
   try {
     const buffer = await _synthesize(text, promptKey)
     const newFileID = await _upload(promptKey, buffer)
@@ -90,7 +98,7 @@ exports.main = async (event) => {
     if (!url) {
       return { success: false, error: 'getTempFileURL returned empty URL', text }
     }
-    return { success: true, audioUrl: url, text }
+    return { success: true, audioUrl: url, fileID: newFileID, text, cached: false }
   } catch (e) {
     return { success: false, error: e.message, text }
   }