chore(lint): 修复 golangci-lint unused

- 移除 OpenAIGatewayHandler 未使用字段

- 删除并发缓存中未使用的 Redis 脚本常量

- 将仅供 unit 测试使用的 parseIntegralNumber 移入 unit build tag 文件

backend/internal/handler/openai_gateway_handler.go

@@ -28,7 +28,6 @@ type OpenAIGatewayHandler struct {
 	errorPassthroughService *service.ErrorPassthroughService
 	concurrencyHelper       *ConcurrencyHelper
 	maxAccountSwitches      int
-	cfg                     *config.Config
 }
 
 // NewOpenAIGatewayHandler creates a new OpenAIGatewayHandler
@@ -55,7 +54,6 @@ func NewOpenAIGatewayHandler(
 		errorPassthroughService: errorPassthroughService,
 		concurrencyHelper:       NewConcurrencyHelper(concurrencyService, SSEPingFormatComment, pingInterval),
 		maxAccountSwitches:      maxAccountSwitches,
-		cfg:                     cfg,
 	}
 }
 

backend/internal/repository/concurrency_cache.go

@@ -147,108 +147,6 @@ var (
 			return 1
 		`)
 
-	// WARNING: Redis Cluster 不兼容 — 脚本内部拼接 key，Cluster 模式下可能路由到错误节点。
-	// 调用时传递空 KEYS 数组，所有 key 在 Lua 内通过 ARGV 动态拼接，
-	// 无法被 Redis Cluster 正确路由到对应 slot，仅适用于单节点或 Sentinel 模式。
-	//
-	// getAccountsLoadBatchScript - batch load query with expired slot cleanup
-	// ARGV[1] = slot TTL (seconds)
-	// ARGV[2..n] = accountID1, maxConcurrency1, accountID2, maxConcurrency2, ...
-	getAccountsLoadBatchScript = redis.NewScript(`
-			local result = {}
-			local slotTTL = tonumber(ARGV[1])
-
-			-- Get current server time
-			local timeResult = redis.call('TIME')
-			local nowSeconds = tonumber(timeResult[1])
-			local cutoffTime = nowSeconds - slotTTL
-
-			local i = 2
-			while i <= #ARGV do
-				local accountID = ARGV[i]
-				local maxConcurrency = tonumber(ARGV[i + 1])
-
-				local slotKey = 'concurrency:account:' .. accountID
-
-				-- Clean up expired slots before counting
-				redis.call('ZREMRANGEBYSCORE', slotKey, '-inf', cutoffTime)
-				local currentConcurrency = redis.call('ZCARD', slotKey)
-
-				local waitKey = 'wait:account:' .. accountID
-				local waitingCount = redis.call('GET', waitKey)
-				if waitingCount == false then
-					waitingCount = 0
-				else
-					waitingCount = tonumber(waitingCount)
-				end
-
-				local loadRate = 0
-				if maxConcurrency > 0 then
-					loadRate = math.floor((currentConcurrency + waitingCount) * 100 / maxConcurrency)
-				end
-
-				table.insert(result, accountID)
-				table.insert(result, currentConcurrency)
-				table.insert(result, waitingCount)
-				table.insert(result, loadRate)
-
-				i = i + 2
-			end
-
-			return result
-		`)
-
-	// WARNING: Redis Cluster 不兼容 — 脚本内部拼接 key，Cluster 模式下可能路由到错误节点。
-	// 调用时传递空 KEYS 数组，所有 key 在 Lua 内通过 ARGV 动态拼接，
-	// 无法被 Redis Cluster 正确路由到对应 slot，仅适用于单节点或 Sentinel 模式。
-	//
-	// getUsersLoadBatchScript - batch load query for users with expired slot cleanup
-	// ARGV[1] = slot TTL (seconds)
-	// ARGV[2..n] = userID1, maxConcurrency1, userID2, maxConcurrency2, ...
-	getUsersLoadBatchScript = redis.NewScript(`
-			local result = {}
-			local slotTTL = tonumber(ARGV[1])
-
-			-- Get current server time
-			local timeResult = redis.call('TIME')
-			local nowSeconds = tonumber(timeResult[1])
-			local cutoffTime = nowSeconds - slotTTL
-
-			local i = 2
-			while i <= #ARGV do
-				local userID = ARGV[i]
-				local maxConcurrency = tonumber(ARGV[i + 1])
-
-				local slotKey = 'concurrency:user:' .. userID
-
-				-- Clean up expired slots before counting
-				redis.call('ZREMRANGEBYSCORE', slotKey, '-inf', cutoffTime)
-				local currentConcurrency = redis.call('ZCARD', slotKey)
-
-				local waitKey = 'concurrency:wait:' .. userID
-				local waitingCount = redis.call('GET', waitKey)
-				if waitingCount == false then
-					waitingCount = 0
-				else
-					waitingCount = tonumber(waitingCount)
-				end
-
-				local loadRate = 0
-				if maxConcurrency > 0 then
-					loadRate = math.floor((currentConcurrency + waitingCount) * 100 / maxConcurrency)
-				end
-
-				table.insert(result, userID)
-				table.insert(result, currentConcurrency)
-				table.insert(result, waitingCount)
-				table.insert(result, loadRate)
-
-				i = i + 2
-			end
-
-			return result
-		`)
-
 	// cleanupExpiredSlotsScript - remove expired slots
 	// KEYS[1] = concurrency:account:{accountID}
 	// ARGV[1] = TTL (seconds)

backend/internal/service/gateway_request.go

@@ -189,45 +189,6 @@ func sliceRawFromBody(body []byte, r gjson.Result) []byte {
 	return []byte(r.Raw)
 }
 
-// parseIntegralNumber 将 JSON 解码后的数字安全转换为 int。
-// 仅接受“整数值”的输入，小数/NaN/Inf/越界值都会返回 false。
-func parseIntegralNumber(raw any) (int, bool) {
-	switch v := raw.(type) {
-	case float64:
-		if math.IsNaN(v) || math.IsInf(v, 0) || v != math.Trunc(v) {
-			return 0, false
-		}
-		if v > float64(math.MaxInt) || v < float64(math.MinInt) {
-			return 0, false
-		}
-		return int(v), true
-	case int:
-		return v, true
-	case int8:
-		return int(v), true
-	case int16:
-		return int(v), true
-	case int32:
-		return int(v), true
-	case int64:
-		if v > int64(math.MaxInt) || v < int64(math.MinInt) {
-			return 0, false
-		}
-		return int(v), true
-	case json.Number:
-		i64, err := v.Int64()
-		if err != nil {
-			return 0, false
-		}
-		if i64 > int64(math.MaxInt) || i64 < int64(math.MinInt) {
-			return 0, false
-		}
-		return int(i64), true
-	default:
-		return 0, false
-	}
-}
-
 // FilterThinkingBlocks removes thinking blocks from request body
 // Returns filtered body or original body if filtering fails (fail-safe)
 // This prevents 400 errors from invalid thinking block signatures

backend/internal/service/parse_integral_number_unit.go

+//go:build unit
+
+package service
+
+import (
+	"encoding/json"
+	"math"
+)
+
+// parseIntegralNumber 将 JSON 解码后的数字安全转换为 int。
+// 仅接受“整数值”的输入，小数/NaN/Inf/越界值都会返回 false。
+//
+// 说明：
+//   - 该函数当前仅用于 unit 测试中的 map-based 解析逻辑验证，因此放在 unit build tag 下，
+//     避免在默认构建中触发 unused lint。
+func parseIntegralNumber(raw any) (int, bool) {
+	switch v := raw.(type) {
+	case float64:
+		if math.IsNaN(v) || math.IsInf(v, 0) || v != math.Trunc(v) {
+			return 0, false
+		}
+		if v > float64(math.MaxInt) || v < float64(math.MinInt) {
+			return 0, false
+		}
+		return int(v), true
+	case int:
+		return v, true
+	case int8:
+		return int(v), true
+	case int16:
+		return int(v), true
+	case int32:
+		return int(v), true
+	case int64:
+		if v > int64(math.MaxInt) || v < int64(math.MinInt) {
+			return 0, false
+		}
+		return int(v), true
+	case json.Number:
+		i64, err := v.Int64()
+		if err != nil {
+			return 0, false
+		}
+		if i64 > int64(math.MaxInt) || i64 < int64(math.MinInt) {
+			return 0, false
+		}
+		return int(i64), true
+	default:
+		return 0, false
+	}
+}