feat(license): dual-path opsx-licence client alongside HMAC

Wire LIC-/LICOFF- activate/verify/heartbeat to licence.rlwj.cn/api,
keep legacy HMAC accepted with deprecation banner, add instance_id
fingerprint and licensing docs (product lokistack still needs admin create).

frontend/src/api/license/index.ts

@@ -8,6 +8,14 @@ export interface LicenseInfo {
   customer?: string
   expiresAt?: number
   expired?: boolean
+  source?: 'hmac' | 'opsx' | string
+  planType?: string
+  maxDevices?: number
+  deprecationNotice?: string
+  inGrace?: boolean
+  graceDaysLeft?: number
+  lastVerifiedAt?: number
+  instanceId?: string
 }
 export const licenseApi = {
   status: () => http.get<{ license: LicenseInfo; pro: boolean; features: string[] }>('/system/license'),