Add basic deep link route handling

src/routes/+layout.svelte

@@ -4,7 +4,7 @@
   import {onMount} from "svelte"
   import * as nip19 from "nostr-tools/nip19"
   import {get, derived} from "svelte/store"
-  import {App} from "@capacitor/app"
+  import {App, type URLOpenListenerEvent} from "@capacitor/app"
   import {dev} from "$app/environment"
   import {goto} from "$app/navigation"
   import {sync, localStorageProvider} from "@welshman/store"
@@ -108,6 +108,13 @@
       }
     })
 
+    // Listen for deep link events
+    App.addListener("appUrlOpen", (event: URLOpenListenerEvent) => {
+      const url = new URL(event.url)
+      const target = `${url.pathname}${url.search}${url.hash}`
+      goto(target, {replaceState: false, noScroll: false})
+    })
+
     // Nstart login
     if (window.location.hash?.startsWith("#nostr-login")) {
       const params = new URLSearchParams(window.location.hash.slice(1))