feat(ips): 批量补全厂商功能 + MAC厂商替换为IEEE OUI数据库

前端:
- IPs.vue: 新增「补全厂商」按钮，选中网段后一键补全
- scanApi: 新增 batchFillVendor/batchDiscoverHostname + enable_netbios 参数

后端:
- enhanced_scan.py: 新增 POST /scan/batch/vendor 批量补全厂商端点
- enhanced_scan.py: 新增 POST /scan/batch/hostname 批量发现主机名端点
- scan_tasks.py: 透传 enable_netbios 参数

backend/app/api/v1/enhanced_scan.py

@@ -156,6 +156,82 @@ def netbios_lookup(ip_address: str, timeout: int = 3):
         "hostname": hostname or "Unknown"
     }
 
+@router.post("/batch/vendor", summary="批量补全厂商信息")
+def batch_fill_vendor(
+    network_id: Optional[int] = None,
+    db: Session = Depends(get_db)
+):
+    """
+    对已有 MAC 地址但缺少厂商信息的 IP 批量补全厂商（使用 IEEE OUI 数据库）
+    """
+    from app.models.network import IPAddress as IPAddressModel
+
+    query = db.query(IPAddressModel).filter(
+        IPAddressModel.mac_address.isnot(None),
+        IPAddressModel.vendor.is_(None)
+    )
+    if network_id:
+        query = query.filter(IPAddressModel.network_id == network_id)
+
+    items = query.all()
+    updated_count = 0
+
+    for ip in items:
+        vendor = EnhancedScanService.get_mac_vendor(ip.mac_address)
+        if vendor:
+            ip.vendor = vendor
+            updated_count += 1
+
+    if updated_count > 0:
+        db.commit()
+
+    return {
+        "message": f"已补全 {updated_count} 条厂商信息",
+        "checked": len(items),
+        "updated": updated_count
+    }
+
+@router.post("/batch/hostname", summary="批量发现主机名")
+def batch_discover_hostname(
+    network_id: Optional[int] = None,
+    enable_dns: bool = True,
+    enable_netbios: bool = True,
+    db: Session = Depends(get_db)
+):
+    """
+    对已有 MAC 地址但缺少主机名的 IP 批量执行主机名发现（DNS PTR + NetBIOS）
+    """
+    from app.models.network import IPAddress as IPAddressModel
+
+    query = db.query(IPAddressModel).filter(
+        IPAddressModel.mac_address.isnot(None),
+        IPAddressModel.hostname.is_(None)
+    )
+    if network_id:
+        query = query.filter(IPAddressModel.network_id == network_id)
+
+    items = query.all()
+    updated_count = 0
+
+    for ip in items:
+        hostname = None
+        if enable_dns:
+            hostname = EnhancedScanService.reverse_dns_lookup(ip.ip_address, timeout=2)
+        if not hostname and enable_netbios:
+            hostname = EnhancedScanService.netbios_lookup(ip.ip_address, timeout=3)
+        if hostname:
+            ip.hostname = hostname
+            updated_count += 1
+
+    if updated_count > 0:
+        db.commit()
+
+    return {
+        "message": f"已发现 {updated_count} 条主机名",
+        "checked": len(items),
+        "updated": updated_count
+    }
+
 
 @router.get("/online/ips", summary="获取所有在线IP列表")
 def get_online_ips(