fix(web): clear svelte-check warnings and log playback failures

The seeded $state initialisers in PlaylistForm intentionally capture the
prop once; untrack() states that instead of tripping
state_referenced_locally. The player now logs the caught exception
rather than discarding it.

frontend/src/lib/components/ui/PlaylistForm.svelte

@@ -1,4 +1,5 @@
 <script lang="ts">
+	import { untrack } from 'svelte';
 	import { enhance } from '$app/forms';
 	import ImageDropzone from './ImageDropzone.svelte';
 	import Button from './Button.svelte';
@@ -33,8 +34,8 @@
 		onSuccess
 	}: Props = $props();
 
-	let name = $state(initialName);
-	let description = $state(initialDescription);
+	let name = $state(untrack(() => initialName));
+	let description = $state(untrack(() => initialDescription));
 	let submitting = $state(false);
 </script>
 

frontend/src/lib/player/player.svelte.ts

@@ -274,7 +274,8 @@ class PlayerState {
 			this.loading = false;
 			this.#retriedId = null;
 			this.#pushRecent(this.current);
-		} catch {
+		} catch (exception) {
+			console.error('playback failed', exception);
 			if (token !== this.#loadToken) return;
 			this.loading = false;
 			this.playing = false;