feat: multi-purpose site

feat: editor
feat: plugin editor

src/routes/(app)/config/ConfigTabs.svelte

@@ -0,0 +1,60 @@
+<script lang="ts">
+  import { page } from "$app/stores";
+  import LL from "$i18n/i18n-svelte";
+  import type { Snippet } from "svelte";
+
+  let { children }: { children?: Snippet } = $props();
+
+  let paths = $derived([
+    {
+      href: "/config/chords/",
+      title: $LL.configure.chords.TITLE(),
+      icon: "piano",
+    },
+    {
+      href: "/config/layout/",
+      title: $LL.configure.layout.TITLE(),
+      icon: "keyboard",
+    },
+    {
+      href: "/config/settings/",
+      title: $LL.configure.settings.TITLE(),
+      icon: "settings",
+    },
+  ]);
+</script>
+
+<nav>
+  {#each paths as { href, title, icon }}
+    <a {href} class:active={$page.url.pathname.startsWith(href)}>
+      <span class="icon">{icon}</span>
+      {title}
+    </a>
+  {/each}
+</nav>
+
+{#if children}
+  {@render children()}
+{/if}
+
+<style lang="scss">
+  nav {
+    display: flex;
+    gap: 8px;
+
+    padding: 8px;
+
+    color: var(--md-sys-color-on-surface-variant);
+
+    background: var(--md-sys-color-surface-variant);
+    border: none;
+    border-radius: 32px;
+  }
+
+  a.active {
+    --icon-fill: 1;
+
+    color: var(--md-sys-color-on-primary);
+    background: var(--md-sys-color-primary);
+  }
+</style>