feat(scan): 增强MAC厂商识别和主机名自动发现

- MAC厂商: 替换硬编码OUI_MAP为mac_vendor_lookup库(IEEE OUI官方数据库)
- 主机名发现新增NetBIOS广播(nmblookup),支持Windows/SMB设备
- 综合扫描支持enable_netbios参数
- 新增NetBIOS主机名发现API端点
- 扫描时自动补全缺失厂商(有MAC无vendor时自动识别)

backend/app/tasks/scan_tasks.py

@@ -21,6 +21,7 @@ def register_tasks(celery_app):
                          enable_ping: bool = True,
                          enable_arp: bool = True,
                          enable_dns: bool = True,
+                         enable_netbios: bool = True,
                          timeout: int = 2):
         """
         Celery 异步任务：扫描指定网段
@@ -54,6 +55,7 @@ def register_tasks(celery_app):
                 enable_ping=enable_ping,
                 enable_arp=enable_arp,
                 enable_dns=enable_dns,
+                enable_netbios=enable_netbios,
                 timeout=timeout
             )
 
@@ -120,7 +122,8 @@ def register_tasks(celery_app):
     @celery_app.task(bind=True)
     def full_network_scan(self, enable_ping: bool = True,
                            enable_arp: bool = True,
-                           enable_dns: bool = True):
+                           enable_dns: bool = True,
+                           enable_netbios: bool = True):
         """
         Celery 定时任务：扫描所有网段
         """
@@ -144,7 +147,8 @@ def register_tasks(celery_app):
                         network.cidr,
                         enable_ping=enable_ping,
                         enable_arp=enable_arp,
-                        enable_dns=enable_dns
+                        enable_dns=enable_dns,
+                        enable_netbios=enable_netbios
                     )
 
                     stats = EnhancedScanService.bulk_update_ips_from_scan(db, results)
@@ -191,7 +195,10 @@ def register_tasks(celery_app):
             results = []
 
             for ip in ip_addresses:
-                result = EnhancedScanService.comprehensive_scan(ip, enable_ping=True, enable_arp=True, enable_dns=False)
+                result = EnhancedScanService.comprehensive_scan(
+                    ip, enable_ping=True, enable_arp=True, enable_dns=False,
+                    enable_netbios=True
+                )
                 EnhancedScanService.update_ip_from_scan_result(db, result)
                 results.append(result)