Fix ZTE LLDP Scope table parse and skip discover without vendor.

Match ZXROS Scope/Holdtime columns, disable Netmiko cmd_verify on show commands, and do not SSH LLDP when vendor/device_type cannot be resolved.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/i18n/en.ts

@@ -1395,6 +1395,7 @@ const en = {
     discoverNeFail: "Collect failed",
     discoverUnmatched: "unmatched {{count}}",
     discoverUnmatchedMore: "{{count}} more not listed",
+    discoverVendorRequired: "Vendor/device type missing; skipped LLDP command",
     discoverParserStub: "Parser \"{{parser}}\" is still a stub; output was collected but neighbors were not parsed",
     discoverNoTargets:
       "No scannable NEs on the map. Add managed NEs, or UME NEs with a CLI connect profile.",

web/src/i18n/zh.ts

@@ -1389,6 +1389,7 @@ const zh = {
     discoverNeFail: "采集失败",
     discoverUnmatched: "未匹配 {{count}}",
     discoverUnmatchedMore: "另有 {{count}} 条未列出",
+    discoverVendorRequired: "未设置厂商/设备类型，已跳过下发 LLDP 命令",
     discoverParserStub: "厂商解析器「{{parser}}」仍为 stub，已采集到输出但未能解析邻居",
     discoverNoTargets: "画布上没有可扫描网元。请添加托管网元，或添加已配置 CLI 凭据的 UME 网元。",
     discoverFilter: "结果筛选",