feat: v1.1.0 - Major UI/UX improvements and new features

- Remove confirmation dialogs for song deletion (faster workflow)
- Add bulk playlist creation from YouTube playlist URLs
- Display playlist tags on song cards in home page
- Enable moving songs between playlists
- Fix mobile UI: action buttons now appear above player bar
- Add bulk song selection and deletion from home page
- Improve loading states and user feedback
- Update documentation and CI/CD workflow
- Fix all toast messages to English

app/api/playlists/route.ts

@@ -1,5 +1,6 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { db } from '@/lib/db'
+import { getYoutubePlaylistMetadata } from '@/lib/ytdlp'
 
 export async function GET() {
   try {
@@ -26,7 +27,7 @@ export async function GET() {
 
 export async function POST(request: NextRequest) {
   try {
-    const { name } = await request.json()
+    const { name, youtubeUrl } = await request.json()
 
     if (!name) {
       return NextResponse.json(
@@ -36,9 +37,58 @@ export async function POST(request: NextRequest) {
     }
 
     const playlist = db.createPlaylist(name)
+    let addedSongs = 0
+
+    // If YouTube URL is provided, fetch and add songs from the playlist
+    if (youtubeUrl) {
+      try {
+        console.log('[API] Fetching YouTube playlist:', youtubeUrl)
+        const playlistSongs = await getYoutubePlaylistMetadata(youtubeUrl)
+        
+        for (const songData of playlistSongs) {
+          try {
+            // Check if song already exists
+            let song = db.getSongByYoutubeId(songData.id)
+            
+            if (!song) {
+              // Create new song
+              song = db.createSong({
+                youtubeId: songData.id,
+                title: songData.title,
+                channelName: songData.channel,
+                thumbnail: songData.thumbnail,
+                duration: songData.duration,
+              })
+              console.log('[API] Created song:', song.id)
+            }
+            
+            // Add song to playlist
+            const playlistSong = db.addSongToPlaylist(playlist.id, song.id)
+            if (playlistSong) {
+              addedSongs++
+              console.log('[API] Added song to playlist:', playlistSong.id)
+            }
+          } catch (songError) {
+            console.error('[API] Error adding song to playlist:', songError)
+            // Continue with other songs
+          }
+        }
+        
+        console.log(`[API] Added ${addedSongs} songs to playlist`)
+      } catch (playlistError) {
+        console.error('[API] Error fetching YouTube playlist:', playlistError)
+        // Don't fail the entire request, just log the error
+      }
+    }
 
     console.log('[API] Playlist created:', playlist.id)
-    return NextResponse.json(playlist)
+    return NextResponse.json({
+      playlist: {
+        ...playlist,
+        playlistSongs: addedSongs > 0 ? db.getPlaylistSongs(playlist.id) : []
+      },
+      addedSongs
+    })
   } catch (error) {
     console.error('[API] Error creating playlist:', error)
     return NextResponse.json(