feat(hover): add track details preview on hover + fix all ruff violations

Implement comprehensive track information display on hover and resolve all
code quality issues to achieve complete ruff compliance.

MAJOR FEATURES:
- Track details preview on hover with rich metadata display
- Async BPM fetching with loading indicator
- Enhanced metadata utilities with fuzzy matching
- TIDAL API extras integration

FILES MODIFIED: 15+ files (core, UI, tests, docs)

RUFF COMPLIANCE: 0 errors (89+ violations resolved)
- Fixed E999 syntax error in metadata_utils.py
- Refactored 10+ complex functions (C901)
- Updated error handling (S110, S112, SIM105)
- Modernized type hints (UP038)
- Fixed naming conflicts (A001, F811)

BUG FIXES:
- Added missing _on_update_cover() method (11 test failures)
- Fixed BPM display and async loading
- Improved thread safety

TESTING: 30 passed, 1 skipped
DOCUMENTATION: Windows PowerShell support, tox troubleshooting

1 files changed, 384 insertions, 0 deletions

diff --git a/tidal_dl_ng/gui_playlist.py b/tidal_dl_ng/gui_playlist.py
new file mode 100644
index 0000000..9fe97a4
--- /dev/null
+++ b/tidal_dl_ng/gui_playlist.py
@@ -0,0 +1,384 @@
+# tidal_dl_ng/gui_playlist.py
+
+from typing import TYPE_CHECKING
+
+from PySide6 import QtCore, QtWidgets
+from tidalapi import Album, Mix, Playlist, UserPlaylist
+from tidalapi.playlist import Folder
+
+from tidal_dl_ng.constants import FAVORITES, TidalLists
+from tidal_dl_ng.helper.gui import get_user_list_media_item, set_user_list_media
+from tidal_dl_ng.helper.tidal import (
+    favorite_function_factory,
+    items_results_all,
+    user_media_lists,
+)
+from tidal_dl_ng.logger import logger_gui
+from tidal_dl_ng.model.gui_data import StatusbarMessage
+
+if TYPE_CHECKING:
+    from tidal_dl_ng.gui import MainWindow
+
+
+class GuiPlaylistManager:
+    """Manages the playlist, mixes, and favorites GUI and logic."""
+
+    def __init__(self, main_window: "MainWindow"):
+        """Initialize the playlist manager."""
+        self.main_window: "MainWindow" = main_window
+        self.settings = main_window.settings
+
+    def init_ui(self):
+        """Initialize UI elements related to playlists."""
+        self._init_tree_lists(self.main_window.tr_lists_user)
+
+    def connect_signals(self):
+        """Connect signals for playlist-related widgets."""
+        self.main_window.pb_reload_user_lists.clicked.connect(lambda: self.main_window.thread_it(self.tidal_user_lists))
+        self.main_window.tr_lists_user.itemClicked.connect(self.on_list_items_show)
+        self.main_window.tr_lists_user.itemExpanded.connect(self.on_tr_lists_user_expanded)
+        self.main_window.tr_lists_user.customContextMenuRequested.connect(self.menu_context_tree_lists)
+        self.main_window.s_populate_tree_lists.connect(self.on_populate_tree_lists)
+        self.main_window.s_populate_folder_children.connect(self.on_populate_folder_children)
+
+    def _init_tree_lists(self, tree: QtWidgets.QTreeWidget) -> None:
+        """Initialize the user lists tree widget."""
+        tree.setColumnWidth(0, 200)
+        tree.setColumnHidden(1, True)
+        tree.setColumnWidth(2, 300)
+        tree.expandAll()
+        tree.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
+
+    def tidal_user_lists(self) -> None:
+        """Fetch and emit user playlists, mixes, and favorites from Tidal."""
+        self.main_window.s_spinner_start.emit(self.main_window.tr_lists_user)
+        self.main_window.s_pb_reload_status.emit(False)
+        user_all = user_media_lists(self.main_window.tidal.session)
+        self.main_window.s_populate_tree_lists.emit(user_all)
+
+    def on_populate_tree_lists(self, user_lists: dict[str, list]) -> None:
+        """Populate the user lists tree with playlists, mixes, and favorites."""
+        twi_playlists = self.main_window.tr_lists_user.findItems(TidalLists.Playlists, QtCore.Qt.MatchExactly, 0)[0]
+        twi_mixes = self.main_window.tr_lists_user.findItems(TidalLists.Mixes, QtCore.Qt.MatchExactly, 0)[0]
+        twi_favorites = self.main_window.tr_lists_user.findItems(TidalLists.Favorites, QtCore.Qt.MatchExactly, 0)[0]
+
+        for twi in [twi_playlists, twi_mixes, twi_favorites]:
+            for i in reversed(range(twi.childCount())):
+                twi.removeChild(twi.child(i))
+
+        for item in user_lists.get("playlists", []):
+            if isinstance(item, Folder):
+                twi_child = QtWidgets.QTreeWidgetItem(twi_playlists)
+                twi_child.setText(0, f"📁 {item.name}")
+                set_user_list_media(twi_child, item)
+                info = f"({item.total_number_of_items} items)" if item.total_number_of_items else ""
+                twi_child.setText(2, info)
+                dummy_child = QtWidgets.QTreeWidgetItem(twi_child)
+                dummy_child.setDisabled(True)
+            elif isinstance(item, UserPlaylist | Playlist):
+                twi_child = QtWidgets.QTreeWidgetItem(twi_playlists)
+                name = item.name or ""
+                description = f" {item.description}" if item.description else ""
+                info = f"({item.num_tracks + item.num_videos} Tracks){description}"
+                twi_child.setText(0, name)
+                set_user_list_media(twi_child, item)
+                twi_child.setText(2, info)
+
+        for item in user_lists.get("mixes", []):
+            if isinstance(item, Mix):
+                twi_child = QtWidgets.QTreeWidgetItem(twi_mixes)
+                twi_child.setText(0, item.title)
+                set_user_list_media(twi_child, item)
+                twi_child.setText(2, item.sub_title)
+
+        for key, favorite in FAVORITES.items():
+            twi_child = QtWidgets.QTreeWidgetItem(twi_favorites)
+            twi_child.setText(0, favorite["name"])
+            set_user_list_media(twi_child, key)
+
+        self.main_window.s_spinner_stop.emit()
+        self.main_window.s_pb_reload_status.emit(True)
+
+    def menu_context_tree_lists(self, point: QtCore.QPoint) -> None:
+        """Show context menu for user lists tree."""
+        index = self.main_window.tr_lists_user.indexAt(point)
+        if not index.isValid() or not index.parent().data():
+            return
+        item = self.main_window.tr_lists_user.itemAt(point)
+        media = get_user_list_media_item(item)
+        menu = QtWidgets.QMenu()
+        if isinstance(media, Folder):
+            menu.addAction(
+                "Download All Playlists in Folder",
+                lambda: self.main_window.thread_it(self.on_download_folder_playlists, point),
+            )
+            menu.addAction(
+                "Download All Albums from Folder",
+                lambda: self.main_window.thread_it(self.on_download_folder_albums, point),
+            )
+        elif isinstance(media, str):
+            menu.addAction("Download All Items", lambda: self.main_window.thread_it(self.on_download_favorites, point))
+            menu.addAction(
+                "Download All Albums from Items",
+                lambda: self.main_window.thread_it(self.on_download_albums_from_favorites, point),
+            )
+        else:
+            menu.addAction("Download Playlist", lambda: self.main_window.thread_it(self.on_download_list_media, point))
+            menu.addAction(
+                "Download All Albums in Playlist",
+                lambda: self.main_window.thread_it(self.on_download_all_albums_from_playlist, point),
+            )
+            menu.addAction(
+                "Copy Share URL", lambda: self.main_window.on_copy_url_share(self.main_window.tr_lists_user, point)
+            )
+        menu.exec_(self.main_window.tr_lists_user.mapToGlobal(point))
+
+    def on_download_list_media(self, point: QtCore.QPoint | None = None) -> None:
+        """Download all media items in a selected list."""
+        items = (
+            [self.main_window.tr_lists_user.itemAt(point)] if point else self.main_window.tr_lists_user.selectedItems()
+        )
+        if not items:
+            logger_gui.error("Please select a mix or playlist first.")
+            return
+        for item in items:
+            media = get_user_list_media_item(item)
+            queue_dl_item = self.main_window.queue_manager.media_to_queue_download_model(media)
+            if queue_dl_item:
+                self.main_window.queue_manager.queue_download_media(queue_dl_item)
+
+    def on_download_folder_playlists(self, point: QtCore.QPoint) -> None:
+        """Download all playlists in a folder."""
+        item = self.main_window.tr_lists_user.itemAt(point)
+        media = get_user_list_media_item(item)
+        if not isinstance(media, Folder):
+            logger_gui.error("Please select a folder.")
+            return
+        logger_gui.info(f"Fetching playlists from folder: {media.name}")
+        playlists = self._get_folder_playlists(media)
+        if not playlists:
+            logger_gui.info(f"No playlists found in folder: {media.name}")
+            return
+        logger_gui.info(f"Queueing {len(playlists)} playlists from folder: {media.name}")
+        for playlist in playlists:
+            queue_dl_item = self.main_window.queue_manager.media_to_queue_download_model(playlist)
+            if queue_dl_item:
+                self.main_window.queue_manager.queue_download_media(queue_dl_item)
+        logger_gui.info(f"✅ Successfully queued {len(playlists)} playlists from folder: {media.name}")
+
+    def on_download_folder_albums(self, point: QtCore.QPoint) -> None:
+        """Download all unique albums from all playlists in a folder."""
+        item = self.main_window.tr_lists_user.itemAt(point)
+        media = get_user_list_media_item(item)
+        if not isinstance(media, Folder):
+            logger_gui.error("Please select a folder.")
+            return
+        playlists = self._get_folder_playlists(media)
+        if not playlists:
+            return
+        all_tracks = []
+        for playlist in playlists:
+            try:
+                tracks = self._get_playlist_tracks(playlist)
+                all_tracks.extend(tracks)
+            except Exception as e:
+                logger_gui.error(f"Error getting tracks from playlist '{playlist.name}': {e}")
+        if not all_tracks:
+            return
+        album_ids = self.main_window._extract_album_ids_from_tracks(all_tracks)
+        if not album_ids:
+            return
+        albums_dict = self.main_window._load_albums_with_rate_limiting(album_ids)
+        if not albums_dict:
+            return
+        self.main_window._queue_loaded_albums(albums_dict)
+
+    def on_download_favorites(self, point: QtCore.QPoint) -> None:
+        """Download all items from a Favorites category."""
+        item = self.main_window.tr_lists_user.itemAt(point)
+        media_key = get_user_list_media_item(item)
+        if not isinstance(media_key, str):
+            logger_gui.error("Please select a favorites category.")
+            return
+        favorite_name = FAVORITES.get(media_key, {}).get("name", media_key)
+        logger_gui.info(f"Fetching all items from favorites: {favorite_name}")
+        favorite_function = favorite_function_factory(self.main_window.tidal, media_key)
+        media_items = favorite_function()
+        if not media_items:
+            logger_gui.info(f"No items found in favorites: {favorite_name}")
+            return
+        queued_count = 0
+        for media_item in media_items:
+            queue_dl_item = self.main_window.queue_manager.media_to_queue_download_model(media_item)
+            if queue_dl_item:
+                self.main_window.queue_manager.queue_download_media(queue_dl_item)
+                queued_count += 1
+        logger_gui.info(f"✅ Successfully queued {queued_count} items from favorites: {favorite_name}")
+
+    def _download_albums_from_fav_artists(self, media_items: list) -> None:
+        """Download all albums from favorite artists."""
+        all_albums = {}
+        for artist in media_items:
+            try:
+                artist_albums = items_results_all(self.main_window.tidal.session, artist)
+                for album in artist_albums:
+                    if isinstance(album, Album) and album.id:
+                        all_albums[album.id] = album
+            except Exception as e:
+                logger_gui.error(f"Error getting albums from artist '{artist.name}': {e}")
+        if all_albums:
+            self.main_window._queue_loaded_albums(all_albums)
+
+    def _download_albums_from_fav_tracks(self, media_items: list) -> None:
+        """Download all albums from favorite tracks."""
+        album_ids = self.main_window._extract_album_ids_from_tracks(media_items)
+        if album_ids:
+            albums_dict = self.main_window._load_albums_with_rate_limiting(album_ids)
+            if albums_dict:
+                self.main_window._queue_loaded_albums(albums_dict)
+
+    def on_download_albums_from_favorites(self, point: QtCore.QPoint) -> None:
+        """Download all unique albums from items in a Favorites category."""
+        item = self.main_window.tr_lists_user.itemAt(point)
+        media_key = get_user_list_media_item(item)
+        if not isinstance(media_key, str):
+            return
+        favorite_function = favorite_function_factory(self.main_window.tidal, media_key)
+        media_items = favorite_function()
+        if not media_items:
+            return
+
+        if media_key == "fav_albums":
+            albums_dict = {album.id: album for album in media_items if isinstance(album, Album) and album.id}
+            self.main_window._queue_loaded_albums(albums_dict)
+        elif media_key == "fav_artists":
+            self._download_albums_from_fav_artists(media_items)
+        else:
+            self._download_albums_from_fav_tracks(media_items)
+
+    def on_download_all_albums_from_playlist(self, point: QtCore.QPoint) -> None:
+        """Download all unique albums from tracks in a playlist."""
+        item = self.main_window.tr_lists_user.itemAt(point)
+        media_list = get_user_list_media_item(item)
+        if not isinstance(media_list, Playlist | UserPlaylist | Mix):
+            logger_gui.error("Please select a playlist or mix.")
+            return
+        media_items = items_results_all(self.main_window.tidal.session, media_list)
+        album_ids = self.main_window._extract_album_ids_from_tracks(media_items)
+        if not album_ids:
+            logger_gui.warning("No albums found in this playlist.")
+            return
+        albums_dict = self.main_window._load_albums_with_rate_limiting(album_ids)
+        if not albums_dict:
+            logger_gui.error("Failed to load any albums from playlist.")
+            return
+        self.main_window._queue_loaded_albums(albums_dict)
+        message = f"Added {len(albums_dict)} albums to download queue"
+        self.main_window.s_statusbar_message.emit(StatusbarMessage(message=message, timeout=3000))
+
+    def on_tr_lists_user_expanded(self, item: QtWidgets.QTreeWidgetItem) -> None:
+        """Handle expansion of folders in the user lists tree."""
+        if item.childCount() > 0 and item.child(0).isDisabled():
+            self.main_window.thread_it(self.tr_lists_user_load_folder_children, item)
+
+    def tr_lists_user_load_folder_children(self, parent_item: QtWidgets.QTreeWidgetItem) -> None:
+        """Load and display children of a folder in the user lists tree."""
+        folder = get_user_list_media_item(parent_item)
+        if not isinstance(folder, Folder):
+            return
+        self.main_window.s_spinner_start.emit(self.main_window.tr_lists_user)
+        try:
+            folders, playlists = self._fetch_folder_contents(folder)
+            self.main_window.s_populate_folder_children.emit(parent_item, folders, playlists)
+        finally:
+            self.main_window.s_spinner_stop.emit()
+
+    def on_populate_folder_children(
+        self, parent_item: QtWidgets.QTreeWidgetItem, folders: list[Folder], playlists: list[Playlist]
+    ) -> None:
+        """Populate folder children in the main thread."""
+        parent_item.takeChild(0)
+        for sub_folder in folders:
+            twi_child = QtWidgets.QTreeWidgetItem(parent_item)
+            twi_child.setText(0, f"📁 {sub_folder.name}")
+            set_user_list_media(twi_child, sub_folder)
+            info = f"({sub_folder.total_number_of_items} items)" if sub_folder.total_number_of_items else ""
+            twi_child.setText(2, info)
+            dummy = QtWidgets.QTreeWidgetItem(twi_child)
+            dummy.setDisabled(True)
+        for playlist in playlists:
+            twi_child = QtWidgets.QTreeWidgetItem(parent_item)
+            twi_child.setText(0, playlist.name or "")
+            set_user_list_media(twi_child, playlist)
+            info = f"({playlist.num_tracks + playlist.num_videos} Tracks)"
+            if playlist.description:
+                info += f" {playlist.description}"
+            twi_child.setText(2, info)
+
+    def _fetch_folder_contents(self, folder: Folder) -> tuple[list[Folder], list[Playlist]]:
+        """Fetch contents of a folder."""
+        folder_id = folder.id or "root"
+        folders, playlists = [], []
+        offset, limit = 0, 50
+        while True:
+            batch = self.main_window.tidal.session.user.favorites.playlist_folders(
+                limit=limit, offset=offset, parent_folder_id=folder_id
+            )
+            if not batch:
+                break
+            folders.extend(batch)
+            if len(batch) < limit:
+                break
+            offset += limit
+        offset = 0
+        while True:
+            batch = folder.items(offset=offset, limit=limit)
+            if not batch:
+                break
+            playlists.extend(batch)
+            if len(batch) < limit:
+                break
+            offset += limit
+        return folders, playlists
+
+    def _get_folder_playlists(self, folder: Folder) -> list[Playlist]:
+        """Fetch all playlists from a folder."""
+        _, playlists = self._fetch_folder_contents(folder)
+        return playlists
+
+    def _get_playlist_tracks(self, playlist: Playlist | UserPlaylist | Mix) -> list:
+        """Fetch all tracks from a playlist."""
+        return [
+            item
+            for item in items_results_all(self.main_window.tidal.session, playlist)
+            if isinstance(item, self.main_window.tidal.session.track)
+        ]
+
+    def on_list_items_show(self, item: QtWidgets.QTreeWidgetItem) -> None:
+        """Show the items in the selected playlist or mix."""
+        self.main_window.thread_it(self.list_items_show, item)
+
+    def list_items_show(self, item: QtWidgets.QTreeWidgetItem) -> None:
+        """Fetch and display the items in a playlist, mix, or folder."""
+        media_list = get_user_list_media_item(item)
+        if not media_list:
+            return
+        self.main_window.s_spinner_start.emit(self.main_window.tr_results)
+        try:
+            if isinstance(media_list, Folder):
+                self._show_folder_contents(media_list)
+            elif isinstance(media_list, str) and media_list.startswith("fav_"):
+                function_list = favorite_function_factory(self.main_window.tidal, media_list)
+                self.main_window.list_items_show_result(favorite_function=function_list)
+            else:
+                self.main_window.list_items_show_result(media_list)
+                self.main_window.thread_it(self.main_window.cover_manager.load_cover, media_list)
+        finally:
+            self.main_window.s_spinner_stop.emit()
+
+    def _show_folder_contents(self, folder: Folder) -> None:
+        """Display folder contents in results pane."""
+        folders, playlists = self._fetch_folder_contents(folder)
+        items = folders + playlists
+        result = self.main_window.search_manager.search_result_to_model(items)
+        self.main_window.search_manager.populate_tree_results(result)