Support Aegis URL scheme for NIP-46 login

src/app/components/BunkerConnect.svelte

@@ -1,4 +1,6 @@
 <script lang="ts">
+  import {Capacitor} from "@capacitor/core"
+  import Button from "@lib/components/Button.svelte"
   import Spinner from "@lib/components/Spinner.svelte"
   import QRCode from "@app/components/QRCode.svelte"
   import type {Nip46Controller} from "@app/util/nip46"
@@ -9,6 +11,14 @@
 
   const {controller}: Props = $props()
   const {url, loading} = controller
+
+  const openAegis = () => {
+    controller.launchSigner("aegis")
+  }
+
+  const openNostrSigner = () => {
+    controller.launchSigner("nostrsigner")
+  }
 </script>
 
 {#if $url}
@@ -20,6 +30,12 @@
     <div class="flex flex-col items-center gap-2">
       <QRCode code={$url} />
       <p class="text-sm opacity-75">Scan with your signer to log in, or click to copy.</p>
+      {#if Capacitor.isNativePlatform()}
+        <div class="flex w-full flex-col gap-2">
+          <Button class="btn btn-primary" onclick={openAegis}>Open in Aegis</Button>
+          <Button class="btn" onclick={openNostrSigner}>Open in Nostr Signer</Button>
+        </div>
+      {/if}
     </div>
   {/if}
 {/if}