fix: 修复并发清理任务 WRONGTYPE 错误

问题：
- 并发清理定时任务在遇到非 zset 类型的遗留键时报 WRONGTYPE 错误
- 错误键如 concurrency:wait:*, concurrency:user:*, concurrency:account:* 等

修复：
- app.js: 使用原子 Lua 脚本先检查键类型再执行清理，消除竞态条件
- redis.js: 为 6 个并发管理函数添加类型检查
  - getAllConcurrencyStatus(): 跳过 queue 键 + 类型检查
  - getConcurrencyStatus(): 类型检查，非 zset 返回 invalidType
  - forceClearConcurrency(): 类型检查，任意类型都删除
  - forceClearAllConcurrency(): 跳过 queue 键 + 类型检查
  - cleanupExpiredConcurrency(): 跳过 queue 键 + 类型检查

- 遗留键会被自动识别并删除，同时记录日志

src/app.js

@@ -581,10 +581,11 @@ class Application {
 
         const now = Date.now()
         let totalCleaned = 0
+        let legacyCleaned = 0
 
         // 使用 Lua 脚本批量清理所有过期项
         for (const key of keys) {
-          // 跳过非 Sorted Set 类型的键（这些键有各自的清理逻辑）
+          // 跳过已知非 Sorted Set 类型的键（这些键有各自的清理逻辑）
           // - concurrency:queue:stats:* 是 Hash 类型
           // - concurrency:queue:wait_times:* 是 List 类型
           // - concurrency:queue:* (不含stats/wait_times) 是 String 类型
@@ -599,11 +600,21 @@ class Application {
           }
 
           try {
-            const cleaned = await redis.client.eval(
+            // 使用原子 Lua 脚本：先检查类型，再执行清理
+            // 返回值：0 = 正常清理无删除，1 = 清理后删除空键，-1 = 遗留键已删除
+            const result = await redis.client.eval(
               `
               local key = KEYS[1]
               local now = tonumber(ARGV[1])
 
+              -- 先检查键类型，只对 Sorted Set 执行清理
+              local keyType = redis.call('TYPE', key)
+              if keyType.ok ~= 'zset' then
+                -- 非 ZSET 类型的遗留键，直接删除
+                redis.call('DEL', key)
+                return -1
+              end
+
               -- 清理过期项
               redis.call('ZREMRANGEBYSCORE', key, '-inf', now)
 
@@ -622,8 +633,10 @@ class Application {
               key,
               now
             )
-            if (cleaned === 1) {
+            if (result === 1) {
               totalCleaned++
+            } else if (result === -1) {
+              legacyCleaned++
             }
           } catch (error) {
             logger.error(`❌ Failed to clean concurrency key ${key}:`, error)
@@ -633,6 +646,9 @@ class Application {
         if (totalCleaned > 0) {
           logger.info(`🔢 Concurrency cleanup: cleaned ${totalCleaned} expired keys`)
         }
+        if (legacyCleaned > 0) {
+          logger.warn(`🧹 Concurrency cleanup: removed ${legacyCleaned} legacy keys (wrong type)`)
+        }
       } catch (error) {
         logger.error('❌ Concurrency cleanup task failed:', error)
       }

src/models/redis.js

@@ -2140,6 +2140,27 @@ class RedisClient {
       const results = []
 
       for (const key of keys) {
+        // 跳过已知非 Sorted Set 类型的键
+        // - concurrency:queue:stats:* 是 Hash 类型
+        // - concurrency:queue:wait_times:* 是 List 类型
+        // - concurrency:queue:* (不含stats/wait_times) 是 String 类型
+        if (
+          key.startsWith('concurrency:queue:stats:') ||
+          key.startsWith('concurrency:queue:wait_times:') ||
+          (key.startsWith('concurrency:queue:') &&
+            !key.includes(':stats:') &&
+            !key.includes(':wait_times:'))
+        ) {
+          continue
+        }
+
+        // 检查键类型，只处理 Sorted Set
+        const keyType = await client.type(key)
+        if (keyType !== 'zset') {
+          logger.debug(`🔢 getAllConcurrencyStatus skipped non-zset key: ${key} (type: ${keyType})`)
+          continue
+        }
+
         // 提取 apiKeyId（去掉 concurrency: 前缀）
         const apiKeyId = key.replace('concurrency:', '')
 
@@ -2202,6 +2223,23 @@ class RedisClient {
         }
       }
 
+      // 检查键类型，只处理 Sorted Set
+      const keyType = await client.type(key)
+      if (keyType !== 'zset') {
+        logger.warn(
+          `⚠️ getConcurrencyStatus: key ${key} has unexpected type: ${keyType}, expected zset`
+        )
+        return {
+          apiKeyId,
+          key,
+          activeCount: 0,
+          expiredCount: 0,
+          activeRequests: [],
+          exists: true,
+          invalidType: keyType
+        }
+      }
+
       // 获取所有成员和分数
       const allMembers = await client.zrange(key, 0, -1, 'WITHSCORES')
 
@@ -2251,20 +2289,36 @@ class RedisClient {
       const client = this.getClientSafe()
       const key = `concurrency:${apiKeyId}`
 
-      // 获取清理前的状态
-      const beforeCount = await client.zcard(key)
+      // 检查键类型
+      const keyType = await client.type(key)
 
-      // 删除整个 key
+      let beforeCount = 0
+      let isLegacy = false
+
+      if (keyType === 'zset') {
+        // 正常的 zset 键，获取条目数
+        beforeCount = await client.zcard(key)
+      } else if (keyType !== 'none') {
+        // 非 zset 且非空的遗留键
+        isLegacy = true
+        logger.warn(
+          `⚠️ forceClearConcurrency: key ${key} has unexpected type: ${keyType}, will be deleted`
+        )
+      }
+
+      // 删除键（无论什么类型）
       await client.del(key)
 
       logger.warn(
-        `🧹 Force cleared concurrency for key ${apiKeyId}, removed ${beforeCount} entries`
+        `🧹 Force cleared concurrency for key ${apiKeyId}, removed ${beforeCount} entries${isLegacy ? ' (legacy key)' : ''}`
       )
 
       return {
         apiKeyId,
         key,
         clearedCount: beforeCount,
+        type: keyType,
+        legacy: isLegacy,
         success: true
       }
     } catch (error) {
@@ -2283,25 +2337,47 @@ class RedisClient {
       const keys = await client.keys('concurrency:*')
 
       let totalCleared = 0
+      let legacyCleared = 0
       const clearedKeys = []
 
       for (const key of keys) {
-        const count = await client.zcard(key)
-        await client.del(key)
-        totalCleared += count
-        clearedKeys.push({
-          key,
-          clearedCount: count
-        })
+        // 跳过 queue 相关的键（它们有各自的清理逻辑）
+        if (key.startsWith('concurrency:queue:')) {
+          continue
+        }
+
+        // 检查键类型
+        const keyType = await client.type(key)
+        if (keyType === 'zset') {
+          const count = await client.zcard(key)
+          await client.del(key)
+          totalCleared += count
+          clearedKeys.push({
+            key,
+            clearedCount: count,
+            type: 'zset'
+          })
+        } else {
+          // 非 zset 类型的遗留键，直接删除
+          await client.del(key)
+          legacyCleared++
+          clearedKeys.push({
+            key,
+            clearedCount: 0,
+            type: keyType,
+            legacy: true
+          })
+        }
       }
 
       logger.warn(
-        `🧹 Force cleared all concurrency: ${keys.length} keys, ${totalCleared} total entries`
+        `🧹 Force cleared all concurrency: ${clearedKeys.length} keys, ${totalCleared} entries, ${legacyCleared} legacy keys`
       )
 
       return {
-        keysCleared: keys.length,
+        keysCleared: clearedKeys.length,
         totalEntriesCleared: totalCleared,
+        legacyKeysCleared: legacyCleared,
         clearedKeys,
         success: true
       }
@@ -2329,9 +2405,30 @@ class RedisClient {
       }
 
       let totalCleaned = 0
+      let legacyCleaned = 0
       const cleanedKeys = []
 
       for (const key of keys) {
+        // 跳过 queue 相关的键（它们有各自的清理逻辑）
+        if (key.startsWith('concurrency:queue:')) {
+          continue
+        }
+
+        // 检查键类型
+        const keyType = await client.type(key)
+        if (keyType !== 'zset') {
+          // 非 zset 类型的遗留键，直接删除
+          await client.del(key)
+          legacyCleaned++
+          cleanedKeys.push({
+            key,
+            cleanedCount: 0,
+            type: keyType,
+            legacy: true
+          })
+          continue
+        }
+
         // 只清理过期的条目
         const cleaned = await client.zremrangebyscore(key, '-inf', now)
         if (cleaned > 0) {
@@ -2350,13 +2447,14 @@ class RedisClient {
       }
 
       logger.info(
-        `🧹 Cleaned up expired concurrency: ${totalCleaned} entries from ${cleanedKeys.length} keys`
+        `🧹 Cleaned up expired concurrency: ${totalCleaned} entries from ${cleanedKeys.length} keys, ${legacyCleaned} legacy keys removed`
       )
 
       return {
         keysProcessed: keys.length,
         keysCleaned: cleanedKeys.length,
         totalEntriesCleaned: totalCleaned,
+        legacyKeysRemoved: legacyCleaned,
         cleanedKeys,
         success: true
       }