From 9c88980483fabaca21ce41574a7355085ec73c3b Mon Sep 17 00:00:00 2001
From: IanShaw027 <131567472+IanShaw027@users.noreply.github.com>
Date: Thu, 1 Jan 2026 04:26:01 +0800
Subject: [PATCH] =?UTF-8?q?fix(lint):=20=E4=BF=AE=E5=A4=8D=20golangci-lint?=
 =?UTF-8?q?=20=E6=8A=A5=E9=94=99?=
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- 修复 gofmt 格式问题
- 修复 staticcheck SA4031 nil check 问题（只在成功时设置 release 函数）
- 删除未使用的 sortAccountsByPriority 函数
---
 backend/internal/handler/gateway_handler.go      | 16 ++++++++++------
 .../internal/handler/gemini_v1beta_handler.go    |  8 +++++---
 backend/internal/pkg/antigravity/claude_types.go |  2 +-
 backend/internal/service/gateway_service.go      |  6 ------
 4 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/backend/internal/handler/gateway_handler.go b/backend/internal/handler/gateway_handler.go
index 769e6700..70b42ffe 100644
--- a/backend/internal/handler/gateway_handler.go
+++ b/backend/internal/handler/gateway_handler.go
@@ -192,9 +192,11 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 					log.Printf("Account wait queue full: account=%d", account.ID)
 					h.handleStreamingAwareError(c, http.StatusTooManyRequests, "rate_limit_error", "Too many pending requests, please retry later", streamStarted)
 					return
-				}
-				accountWaitRelease = func() {
-					h.concurrencyHelper.DecrementAccountWaitCount(c.Request.Context(), account.ID)
+				} else {
+					// Only set release function if increment succeeded
+					accountWaitRelease = func() {
+						h.concurrencyHelper.DecrementAccountWaitCount(c.Request.Context(), account.ID)
+					}
 				}
 
 				accountReleaseFunc, err = h.concurrencyHelper.AcquireAccountSlotWithWaitTimeout(
@@ -314,9 +316,11 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 				log.Printf("Account wait queue full: account=%d", account.ID)
 				h.handleStreamingAwareError(c, http.StatusTooManyRequests, "rate_limit_error", "Too many pending requests, please retry later", streamStarted)
 				return
-			}
-			accountWaitRelease = func() {
-				h.concurrencyHelper.DecrementAccountWaitCount(c.Request.Context(), account.ID)
+			} else {
+				// Only set release function if increment succeeded
+				accountWaitRelease = func() {
+					h.concurrencyHelper.DecrementAccountWaitCount(c.Request.Context(), account.ID)
+				}
 			}
 
 			accountReleaseFunc, err = h.concurrencyHelper.AcquireAccountSlotWithWaitTimeout(
diff --git a/backend/internal/handler/gemini_v1beta_handler.go b/backend/internal/handler/gemini_v1beta_handler.go
index 1959c0f3..93ab23c9 100644
--- a/backend/internal/handler/gemini_v1beta_handler.go
+++ b/backend/internal/handler/gemini_v1beta_handler.go
@@ -233,9 +233,11 @@ func (h *GatewayHandler) GeminiV1BetaModels(c *gin.Context) {
 				log.Printf("Account wait queue full: account=%d", account.ID)
 				googleError(c, http.StatusTooManyRequests, "Too many pending requests, please retry later")
 				return
-			}
-			accountWaitRelease = func() {
-				geminiConcurrency.DecrementAccountWaitCount(c.Request.Context(), account.ID)
+			} else {
+				// Only set release function if increment succeeded
+				accountWaitRelease = func() {
+					geminiConcurrency.DecrementAccountWaitCount(c.Request.Context(), account.ID)
+				}
 			}
 
 			accountReleaseFunc, err = geminiConcurrency.AcquireAccountSlotWithWaitTimeout(
diff --git a/backend/internal/pkg/antigravity/claude_types.go b/backend/internal/pkg/antigravity/claude_types.go
index f394d7e3..01b805cd 100644
--- a/backend/internal/pkg/antigravity/claude_types.go
+++ b/backend/internal/pkg/antigravity/claude_types.go
@@ -41,7 +41,7 @@ type ClaudeMetadata struct {
 // 1. 标准格式: { "name": "...", "description": "...", "input_schema": {...} }
 // 2. Custom 格式 (MCP): { "type": "custom", "name": "...", "custom": { "description": "...", "input_schema": {...} } }
 type ClaudeTool struct {
-	Type        string          `json:"type,omitempty"`         // "custom" 或空（标准格式）
+	Type        string          `json:"type,omitempty"` // "custom" 或空（标准格式）
 	Name        string          `json:"name"`
 	Description string          `json:"description,omitempty"`  // 标准格式使用
 	InputSchema map[string]any  `json:"input_schema,omitempty"` // 标准格式使用
diff --git a/backend/internal/service/gateway_service.go b/backend/internal/service/gateway_service.go
index 6c45ff0f..af9342b1 100644
--- a/backend/internal/service/gateway_service.go
+++ b/backend/internal/service/gateway_service.go
@@ -681,12 +681,6 @@ func (s *GatewayService) tryAcquireAccountSlot(ctx context.Context, accountID in
 	return s.concurrencyService.AcquireAccountSlot(ctx, accountID, maxConcurrency)
 }
 
-func sortAccountsByPriority(accounts []*Account) {
-	sort.SliceStable(accounts, func(i, j int) bool {
-		return accounts[i].Priority < accounts[j].Priority
-	})
-}
-
 func sortAccountsByPriorityAndLastUsed(accounts []*Account, preferOAuth bool) {
 	sort.SliceStable(accounts, func(i, j int) bool {
 		a, b := accounts[i], accounts[j]