replace mock passport flows with live server integration

Switch the app to the real passport enrollment, dashboard, device, alert, and challenge APIs so it can pair with idp.global and act on server-backed state instead of demo data.

swift/Sources/Core/Services/PairingPayloadParser.swift

@@ -3,6 +3,9 @@ import Foundation
 struct PairingPayloadContext: Equatable {
     let deviceName: String
     let originHost: String
+    let pairingToken: String
+    let challenge: String?
+    let challengeID: String?
     let tokenPreview: String
 }
 
@@ -21,6 +24,9 @@ enum PairingPayloadParser {
             return PairingPayloadContext(
                 deviceName: device,
                 originHost: origin,
+                pairingToken: token,
+                challenge: queryItems.first(where: { $0.name == "challenge" })?.value,
+                challengeID: queryItems.first(where: { $0.name == "challenge_id" })?.value,
                 tokenPreview: String(token.suffix(6))
             )
         }
@@ -29,6 +35,9 @@ enum PairingPayloadParser {
             return PairingPayloadContext(
                 deviceName: "Manual Session",
                 originHost: "code.foss.global",
+                pairingToken: trimmedPayload,
+                challenge: nil,
+                challengeID: nil,
                 tokenPreview: String(trimmedPayload.suffix(6))
             )
         }