chore: use writable derived in sverdle demo project (#500)

* chore: use writable derived in sverdle

* update used svelte version for demo project

* add changeset

---------

Co-authored-by: Manuel Serret <mserret99@gmail.com>

Author: Rich-Harris

.changeset/eighty-tools-own.md

@@ -0,0 +1,5 @@
+---
+'sv': patch
+---
+
+chore: use writable derived in sverdle `demo` project

packages/create/templates/demo/package.json

@@ -14,7 +14,7 @@
 		"@sveltejs/adapter-auto": "^4.0.0",
 		"@sveltejs/kit": "^2.9.0",
 		"@sveltejs/vite-plugin-svelte": "^5.0.0",
-		"svelte": "^5.0.0",
+		"svelte": "^5.25.0",
 		"typescript": "^5.3.3",
 		"vite": "^6.0.0"
 	}

packages/create/templates/demo/package.template.json

@@ -15,7 +15,7 @@
 		"@sveltejs/adapter-auto": "^4.0.0",
 		"@sveltejs/kit": "^2.16.0",
 		"@sveltejs/vite-plugin-svelte": "^5.0.0",
-		"svelte": "^5.0.0",
+		"svelte": "^5.25.0",
 		"vite": "^6.0.0"
 	}
 }

packages/create/templates/demo/src/routes/sverdle/+page.svelte

@@ -29,12 +29,7 @@
 	let i = $derived(won ? -1 : data.answers.length);
 
 	/** The current guess */
-	// svelte-ignore state_referenced_locally
-	let currentGuess = $state(data.guesses[i] || '');
-
-	$effect(() => {
-		currentGuess = data.guesses[i] || '';
-	});
+	let currentGuess = $derived(data.guesses[i] || '');
 
 	/** Whether the current guess can be submitted */
 	let submittable = $derived(currentGuess.length === 5);