feat: replace the sidebar logo with a book mark

frontend/src/lib/components/icons/UnjsDb0.svelte

@@ -1,73 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" viewBox="0 0 32 32" {...$$props}
-	><g fill="none"
-		><path
-			fill="#01579B"
-			d="m29.508 25.58l-11.435 5.17c-.706.332-1.44.3-2.116-.09L1.524 23.33c-.413-.265-.536-.652-.51-.922c.025-.27.087-.563.812-.773l1.07-.395l14.48 7.893l10.29-4.206z"
-		/><path
-			fill="#F5F5F5"
-			d="M17.935 29.923a1.99 1.99 0 0 1-1.815-.065l-14.093-7.1a.395.395 0 0 1-.14-.558c.31-.512.88-2.133-.06-3.477l15.916 7.662z"
-		/><path
-			fill="#94C6D6"
-			d="m28.898 24.995l-10.963 4.927c-.362.158-1.085.438-1.918-.122c.658.047 1.12-.225 1.358-.668c.233-.43.163-1.135-.12-1.532c-.172-.24-.635-.623-.837-.838l11.857-4.637c1.05-.433 2.035.215 2.193 1.003c.174.89-.96 1.617-1.57 1.867"
-		/><path
-			fill="#01579B"
-			d="m29.445 21.74l-11.317 5.05a2.67 2.67 0 0 1-2.193-.1l-14.46-7.345a.94.94 0 0 1-.43-.525c-.135-.437.035-.988.548-1.163l15.67 7.988l10.73-4.593z"
-		/><path
-			fill="#0091EA"
-			d="m30.298 22.473l-1.233-.448l-2.54.148l-8.395 3.747a2.67 2.67 0 0 1-2.192-.1L1.475 18.477a.438.438 0 0 1 .117-.82l10.423-4.662c.297-.055.602-.022.88.095l14.872 7.09s2.363 1.617 2.53 2.293"
-		/><path
-			fill="#616161"
-			d="M26.383 22.245s1.565-.613 2.794-.558s1.658.918 1.658.918c-.233-1.058-1.325-1.598-1.325-1.598l-16.25-8.182c-.112-.047-.527-.145-1.165.118c-.515.212-2.198 1-2.198 1z"
-		/><path
-			fill="#424242"
-			d="M30.905 22.805c-.117-.467-.408-.967-.943-1.21c-.704-.317-1.71-.235-2.352.1l-1.227.545v.865l1.552-.69c1.51-.672 2.18.335 2.238.573c.24.967-.225 1.527-1.598 2.157l-2.23 1.005v.87l2.565-1.142c1.135-.455 2.43-1.31 1.995-3.073"
-		/><path
-			fill="#01579B"
-			d="M8.253 22.578L3.935 16.61l.677-.302l4.858 6.675zm5.537 2.75l-.77-.61l13.363-2.728v.438l-1.873.71z"
-		/><path
-			fill="#9CCC65"
-			d="m3.7 11.545l16.878-2.82l7.372 8.118a.689.689 0 0 1-.36 1.15l-17.425 3.575z"
-		/><path
-			fill="#689F38"
-			d="m27.59 17.293l-17.305 3.505l-.055.825l17.36-3.56a.686.686 0 0 0 .427-1.058a.67.67 0 0 1-.427.288m.933 3.782a.49.49 0 0 1-.318.74l-15.93 3.23c-.957.197-1.898-.43-1.982-1.405a1.635 1.635 0 0 1 1.297-1.742l15.32-3.44z"
-		/><path
-			fill="#616161"
-			d="m13.898 20.025l-6.345-9.08l-3.62.957c-.838.833-.525 2.2-.525 2.2s5.542 8.895 6.417 10.033s2.153.96 2.153.96l2.157-.435l-.225-4.025z"
-		/><path
-			fill="#424242"
-			d="m13.898 20.085l-3.048.63c-.832.188-.982.97-.982.97L2.51 11.143s-1.047 1.267-.352 2.345l7.667 10.647c.838 1.192 2.153.97 2.153.97l2.157-.435l-.223-3.945z"
-		/><path
-			fill="#B9E4EA"
-			d="M27.563 20.75a.29.29 0 0 1-.205.405L12.125 24.28c-.957.197-1.635-.438-1.6-1.303c.045-1.092.657-1.555 1.467-1.722L27.3 18.127s-.52.585-.123 1.68c.136.378.28.713.386.943"
-		/><path
-			stroke="#424242"
-			stroke-miterlimit="10"
-			stroke-width=".518"
-			d="M11.303 20.925L4.775 11.69"
-		/><path fill="#424242" d="m11.815 16.987l-8.395-4.23l-.34.67l9.7 4.943z" /><path
-			fill="#689F38"
-			d="m27.198 16.008l-.616-.675l-9.457 4.34l-5.31-2.628l.905 1.295l3.518 1.797l2.62-.402z"
-		/><path
-			fill="#C62828"
-			d="m29.505 14.338l-11.432 5.17c-.706.332-1.44.3-2.116-.09l-14.434-7.33c-.413-.265-.536-.653-.51-.923c.025-.27.087-.562.812-.772l.678-.25l14.83 7.277l12.042-4.983z"
-		/><path
-			fill="#F5F5F5"
-			d="M17.933 18.68a1.99 1.99 0 0 1-1.815-.065l-14.093-7.1a.395.395 0 0 1-.14-.558c.31-.512.88-2.132-.06-3.477l15.56 7.915z"
-		/><path
-			fill="#94C6D6"
-			d="M28.895 13.753L17.933 18.68c-.363.157-1.085.438-1.918-.122c.657.047 1.12-.226 1.357-.668c.233-.43.163-1.135-.12-1.532c-.172-.24-.634-.623-.837-.838l11.858-4.637c1.05-.433 2.035.215 2.192 1.002c.175.89-.96 1.617-1.57 1.867"
-		/><path
-			fill="#C62828"
-			d="m29.445 10.498l-11.317 5.05a2.67 2.67 0 0 1-2.193-.1L1.472 8.102a.9.9 0 0 1-.447-.54c-.108-.405.032-.938.565-1.148l13.253-2.807z"
-		/><path
-			fill="#F44336"
-			d="m30.295 11.23l-1.233-.448l-2.54.148l-8.394 3.747a2.67 2.67 0 0 1-2.193-.1L1.472 7.232c-.372-.19-.24-.692.118-.82l10.425-4.66c.297-.055.602-.022.88.095l14.872 7.09s2.36 1.615 2.528 2.293"
-		/><path
-			fill="#616161"
-			d="M26.383 11s1.302-.457 2.532-.402s1.922.762 1.922.762c-.252-1.13-1.325-1.598-1.325-1.598L13.263 1.58c-.112-.048-.527-.145-1.165.117a99 99 0 0 0-2.197 1z"
-		/><path fill="#424242" d="M27.87 10.465L11.243 2.077l.55-.247l16.91 8.475z" /><path
-			fill="#424242"
-			d="M30.903 11.563c-.118-.468-.316-.92-.873-1.155c-.713-.3-1.363-.363-2.422.045l-1.228.545v.865l1.553-.69c.787-.37 1.947-.29 2.237.572c.317.945-.225 1.528-1.598 2.158l-2.23 1.005v.87l2.566-1.143c1.137-.455 2.432-1.31 1.994-3.072"
-		/></g
-	></svg
->

frontend/src/lib/components/icons/chitai-mark.svelte

@@ -0,0 +1,29 @@
+<script lang="ts">
+	import type { SVGAttributes } from 'svelte/elements';
+
+	let { ...rest }: SVGAttributes<SVGElement> = $props();
+</script>
+
+<!--
+	Drawn in currentColor and stroked at lucide's weight so the mark sits with
+	the rest of the sidebar icons and picks up the theme's sidebar foreground.
+	Intrinsic size matches its rendered size — see app-sidebar.svelte.
+-->
+<svg
+	xmlns="http://www.w3.org/2000/svg"
+	width="28"
+	height="28"
+	viewBox="0 0 24 24"
+	fill="none"
+	stroke="currentColor"
+	stroke-width="1.6"
+	stroke-linecap="round"
+	stroke-linejoin="round"
+	aria-hidden="true"
+	{...rest}
+>
+	<path d="M4 5.4A2.4 2.4 0 0 1 6.4 3H20v15.2H6.4A2.4 2.4 0 0 0 4 20.6z" />
+	<path d="M8.6 3v15.2" />
+	<path d="M12.4 7.6h4" />
+	<path d="M12.4 11.2h4" />
+</svg>