update Open Graph image URLs to use absolute path and add robots meta tag

src/routes/(app)/+page.svelte

@@ -103,7 +103,7 @@
 	<meta property="og:description" content="very cool and awesome automated osu! matchmaking platform" />
 	<meta property="og:type" content="website" />
 	<meta property="og:url" content={page.url.href} />
-	<meta property="og:image" content="/logo.png" />
+	<meta property="og:image" content="https://esports.vash.software/logo.png" />
 	<meta property="og:site_name" content="Vash Esports" />
 	<meta name="twitter:card" content="summary" />
 </svelte:head>

src/routes/(app)/mappools/[id]/+page.svelte

@@ -56,7 +56,7 @@
 	<meta property="og:description" content="{data.pool.slots.length} maps · View on Vash Esports" />
 	<meta property="og:type" content="website" />
 	<meta property="og:url" content={page.url.href} />
-	<meta property="og:image" content="/logo.png" />
+	<meta property="og:image" content="https://esports.vash.software/logo.png" />
 	<meta property="og:site_name" content="Vash Esports" />
 	<meta name="twitter:card" content="summary" />
 </svelte:head>

src/routes/(app)/matches/[id]/+page.svelte

@@ -148,7 +148,7 @@
 	<meta property="og:description" content={ogDesc} />
 	<meta property="og:type" content="website" />
 	<meta property="og:url" content={page.url.href} />
-	<meta property="og:image" content="/logo.png" />
+	<meta property="og:image" content="https://esports.vash.software/logo.png" />
 	<meta property="og:site_name" content="Vash Esports" />
 	<meta name="twitter:card" content="summary" />
 </svelte:head>

src/routes/+layout.svelte

@@ -1,4 +1,5 @@
 <script lang="ts">
+	import { page } from '$app/state';
 	import { env } from '$env/dynamic/public';
 
 	let { children } = $props();
@@ -12,6 +13,8 @@
 		<!-- svelte-ignore a11y_missing_attribute -->
 		<script async defer src={umamiUrl} data-website-id={umamiId}></script>
 	{/if}
+	<link rel="canonical" href={page.url.href} />
+	<meta name="robots" content="index, follow" />
 </svelte:head>
 
 {@render children()}