fix: 显式忽略不需要处理的错误返回值

对 os.Remove、conn.Close 等清理操作的返回值使用 _ 忽略，
避免 errcheck 静态检查告警。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

internal/cache/disk_cache.go

@@ -370,7 +370,7 @@ func (dc *DiskCache) Set(hashKey uint64, origKey string, data []byte, headers ma
 		return
 	}
 	if err := os.Rename(tmpDataPath, dataPath); err != nil {
-		os.Remove(tmpDataPath)
+		_ = os.Remove(tmpDataPath)
 		return
 	}
 
@@ -384,7 +384,7 @@ func (dc *DiskCache) Set(hashKey uint64, origKey string, data []byte, headers ma
 		return
 	}
 	if err := os.Rename(tmpMetaPath, metaPath); err != nil {
-		os.Remove(tmpMetaPath)
+		_ = os.Remove(tmpMetaPath)
 		return
 	}
 
@@ -424,8 +424,8 @@ func (dc *DiskCache) Delete(hashKey uint64) error {
 	// 删除文件
 	dataPath := dc.filePathFromHash(hashKey, "data")
 	metaPath := dc.filePathFromHash(hashKey, "meta")
-	os.Remove(dataPath)
-	os.Remove(metaPath)
+	_ = os.Remove(dataPath)
+	_ = os.Remove(metaPath)
 
 	return nil
 }
@@ -505,7 +505,7 @@ func (dc *DiskCache) evict() {
 		// 删除文件
 		dataPath := dc.filePathFromHash(oldestKey, "data")
 		metaPath := dc.filePathFromHash(oldestKey, "meta")
-		os.Remove(dataPath)
-		os.Remove(metaPath)
+		_ = os.Remove(dataPath)
+		_ = os.Remove(metaPath)
 	}
 }

internal/lua/api_socket_tcp.go

@@ -429,7 +429,7 @@ func (s *TCPSocket) Close() error {
 
 	// 关闭连接
 	if s.conn != nil {
-		s.conn.Close()
+		_ = s.conn.Close()
 		s.conn = nil
 	}
 
@@ -802,7 +802,7 @@ func tcpSocketSetTimeouts(L *glua.LState) int {
 // tcpSocketGC __gc 元方法
 func tcpSocketGC(L *glua.LState) int {
 	socket := checkTCPSocket(L, 1)
-	socket.Close()
+	_ = socket.Close()
 	return 0
 }
 

internal/middleware/security/geoip.go

@@ -82,7 +82,7 @@ func NewGeoIPLookup(dbPath string, cacheSize int, ttl time.Duration, privateIPBe
 	cache, err := lru.New[string, *cachedCountry](cacheSize)
 	if err != nil {
 
-		db.Close()
+		_ = db.Close()
 		return nil, fmt.Errorf("create lru cache: %w", err)
 	}
 

internal/server/server.go

@@ -534,7 +534,7 @@ func (s *Server) createListener(cfg *config.ServerConfig) (net.Listener, error)
 
 		// 2. 清理旧 socket 文件
 		if _, err := os.Stat(socketPath); err == nil {
-			os.Remove(socketPath)
+			_ = os.Remove(socketPath)
 		}
 
 		// 3. 创建 Unix socket listener