chore(mobile): sign for the App Store and declare exempt encryption

Sets the development team so `tauri ios init` writes it into the Xcode
project, and marks the app's encryption (standard TLS/QUIC only) as exempt
so TestFlight uploads skip the export-compliance question.

Co-Authored-By: Claude <noreply@anthropic.com>

mobile/src-tauri/Info.ios.plist

@@ -15,5 +15,10 @@
 	     Settings → Mobile (tauri-plugin-barcode-scanner). -->
 	<key>NSCameraUsageDescription</key>
 	<string>tty7 uses the camera to scan the pairing code your computer shows.</string>
+	<!-- The only encryption is standard TLS/QUIC (rustls, iroh), which is
+	     exempt from export documentation. Saying so here spares the
+	     compliance question on every TestFlight upload. -->
+	<key>ITSAppUsesNonExemptEncryption</key>
+	<false/>
 </dict>
 </plist>

mobile/src-tauri/tauri.conf.json

@@ -35,7 +35,8 @@
     "iOS": {
       "frameworks": [
         "SystemConfiguration"
-      ]
+      ],
+      "developmentTeam": "78SZC3DQ7B"
     }
   }
 }