feat(ui): dynamically load playlists and artists in library

src/lib/library/scanner.ts

@@ -0,0 +1,72 @@
+import { readDir } from '@tauri-apps/plugin-fs';
+
+export interface Artist {
+  name: string;
+  path: string;
+}
+
+export interface Playlist {
+  name: string;
+  path: string;
+}
+
+/**
+ * Scan music folder for artists (each folder is an artist)
+ */
+export async function scanArtists(musicFolderPath: string): Promise<Artist[]> {
+  try {
+    const entries = await readDir(musicFolderPath);
+
+    const artists: Artist[] = [];
+
+    for (const entry of entries) {
+      if (entry.isDirectory) {
+        artists.push({
+          name: entry.name,
+          path: `${musicFolderPath}/${entry.name}`
+        });
+      }
+    }
+
+    // Sort alphabetically
+    artists.sort((a, b) => a.name.localeCompare(b.name));
+
+    return artists;
+  } catch (error) {
+    console.error('Error scanning artists:', error);
+    return [];
+  }
+}
+
+/**
+ * Scan playlists folder for m3u/m3u8 files
+ */
+export async function scanPlaylists(playlistsFolderPath: string): Promise<Playlist[]> {
+  try {
+    const entries = await readDir(playlistsFolderPath);
+
+    const playlists: Playlist[] = [];
+
+    for (const entry of entries) {
+      if (!entry.isDirectory) {
+        const isPlaylist = entry.name.endsWith('.m3u') || entry.name.endsWith('.m3u8');
+        if (isPlaylist) {
+          // Remove extension for display name
+          const nameWithoutExt = entry.name.replace(/\.(m3u8?|M3U8?)$/, '');
+          playlists.push({
+            name: nameWithoutExt,
+            path: `${playlistsFolderPath}/${entry.name}`
+          });
+        }
+      }
+    }
+
+    // Sort alphabetically
+    playlists.sort((a, b) => a.name.localeCompare(b.name));
+
+    return playlists;
+  } catch (error) {
+    console.error('Error scanning playlists:', error);
+    return [];
+  }
+}

src/routes/+layout.svelte

@@ -1,7 +1,31 @@
 <script lang="ts">
+  import { onMount } from 'svelte';
   import TitleBar from "$lib/TitleBar.svelte";
   import MenuBar from "$lib/MenuBar.svelte";
   import ToolBar from "$lib/ToolBar.svelte";
+  import { settings, loadSettings } from '$lib/stores/settings';
+  import { scanPlaylists, type Playlist } from '$lib/library/scanner';
+
+  let { children } = $props();
+
+  let playlists = $state<Playlist[]>([]);
+
+  onMount(async () => {
+    await loadSettings();
+    await loadPlaylists();
+  });
+
+  async function loadPlaylists() {
+    if (!$settings.playlistsFolder) {
+      return;
+    }
+
+    try {
+      playlists = await scanPlaylists($settings.playlistsFolder);
+    } catch (e) {
+      console.error('Error loading playlists:', e);
+    }
+  }
 </script>
 
 <div class="app-container">
@@ -44,31 +68,31 @@
           </a>
         </div>
       </details>
-      <details class="nav-collapsible">
+      <details class="nav-collapsible" open>
         <summary class="nav-item">
           <img src="/icons/cassette-tape.png" alt="" class="nav-icon" />
           Playlists
         </summary>
         <div class="nav-submenu">
-          <a href="/playlists/favorites" class="nav-item nav-subitem">
-            <img src="/icons/eighthnote-white.svg" alt="" class="nav-icon" />
-            Favorites
-          </a>
-          <a href="/playlists/recently-played" class="nav-item nav-subitem">
-            <img src="/icons/eighthnote-white.svg" alt="" class="nav-icon" />
-            Recently Played
-          </a>
-          <a href="/playlists/workout" class="nav-item nav-subitem">
-            <img src="/icons/eighthnote-white.svg" alt="" class="nav-icon" />
-            Workout Mix
-          </a>
+          {#if playlists.length === 0}
+            <div class="nav-item nav-subitem" style="opacity: 0.5;">
+              No playlists found
+            </div>
+          {:else}
+            {#each playlists as playlist}
+              <a href="/playlists/{encodeURIComponent(playlist.name)}" class="nav-item nav-subitem">
+                <img src="/icons/eighthnote-white.svg" alt="" class="nav-icon" />
+                {playlist.name}
+              </a>
+            {/each}
+          {/if}
         </div>
       </details>
     </nav>
   </aside>
 
     <main class="content-area sunken-panel">
-      <slot />
+      {@render children?.()}
     </main>
   </div>
 

src/routes/+page.svelte

@@ -1,4 +1,5 @@
 <div>
+    <img src="/Square150x150Logo.png" alt="cat" style="width: 128px; height: 128px;" />
     <h2>Welcome to Shark!</h2>
     <p>Your music library manager and player.</p>
 

src/routes/library/+page.svelte

@@ -1,12 +1,66 @@
+<script lang="ts">
+  import { onMount } from 'svelte';
+  import { settings, loadSettings } from '$lib/stores/settings';
+  import { scanArtists, type Artist } from '$lib/library/scanner';
+
+  let artists = $state<Artist[]>([]);
+  let loading = $state(true);
+  let error = $state<string | null>(null);
+
+  onMount(async () => {
+    await loadSettings();
+    await loadArtists();
+  });
+
+  async function loadArtists() {
+    loading = true;
+    error = null;
+
+    if (!$settings.musicFolder) {
+      error = 'No music folder configured. Please set one in Settings.';
+      loading = false;
+      return;
+    }
+
+    try {
+      artists = await scanArtists($settings.musicFolder);
+      loading = false;
+    } catch (e) {
+      error = 'Error loading artists: ' + (e as Error).message;
+      loading = false;
+    }
+  }
+</script>
+
 <div>
   <h2>Library</h2>
-  <p>Your music collection</p>
 
-  <section class="library-content">
-    <div class="field-row-stacked">
-      <!-- Library content will go here -->
-    </div>
-  </section>
+  {#if loading}
+    <p>Loading artists...</p>
+  {:else if error}
+    <p class="error">{error}</p>
+  {:else if artists.length === 0}
+    <p>No artists found in your music folder.</p>
+  {:else}
+    <section class="library-content">
+      <table>
+        <thead>
+          <tr>
+            <th>Artist</th>
+            <th>Path</th>
+          </tr>
+        </thead>
+        <tbody>
+          {#each artists as artist}
+            <tr>
+              <td>{artist.name}</td>
+              <td class="path">{artist.path}</td>
+            </tr>
+          {/each}
+        </tbody>
+      </table>
+    </section>
+  {/if}
 </div>
 
 <style>
@@ -17,4 +71,18 @@
   .library-content {
     margin-top: 20px;
   }
+
+  .error {
+    color: #ff6b6b;
+  }
+
+  table {
+    width: 100%;
+  }
+
+  .path {
+    font-family: monospace;
+    font-size: 0.9em;
+    opacity: 0.7;
+  }
 </style>