feat: UX improvements for frontend

- Clear selected song when changing playlists (already implemented)
- Replace 'Add to playlist...' and 'Remove from playlist' buttons with 'Actions' dropdown in PaginatedSongList
- Add key (tonality) next to duration in song list display format (e.g., 1:16 - A8)
- Update song matching page title to include storage provider (e.g., 'Sync and Matching (WEBDAV)')
- Remove storage provider text from sync buttons for cleaner interface
- Fix bulk selection state clearing when switching playlists to prevent stale selections

packages/frontend/src/components/PaginatedSongList.tsx

@@ -12,8 +12,13 @@ import {
   Input,
   InputGroup,
   InputLeftElement,
+  Menu,
+  MenuButton,
+  MenuList,
+  MenuItem,
+  MenuDivider,
 } from '@chakra-ui/react';
-import { Search2Icon } from '@chakra-ui/icons';
+import { Search2Icon, ChevronDownIcon } from '@chakra-ui/icons';
 import { FiPlay } from 'react-icons/fi';
 import type { Song, PlaylistNode } from '../types/interfaces';
 import { api } from '../services/api';
@@ -131,7 +136,7 @@ const SongItem = memo<{
       </Box>
       <Box textAlign="right" ml={2}>
         <Text fontSize="xs" color="gray.500">
-          {formattedDuration}
+          {formattedDuration}{song.tonality ? ` - ${song.tonality}` : ''}
         </Text>
         <Text fontSize="xs" color="gray.600">
           {song.averageBpm} BPM
@@ -202,6 +207,13 @@ export const PaginatedSongList: React.FC<PaginatedSongListProps> = memo(({
     loadingRef_state.current = loading;
     onLoadMoreRef.current = onLoadMore;
   }, [hasMore, loading, onLoadMore]);
+
+  // Clear selection when switching playlists
+  useEffect(() => {
+    if (isSwitchingPlaylist) {
+      setSelectedSongs(new Set());
+    }
+  }, [isSwitchingPlaylist]);
   
   // Debounce search to prevent excessive API calls
   const debouncedSearchQuery = useDebounce(localSearchQuery, 300);
@@ -522,27 +534,32 @@ export const PaginatedSongList: React.FC<PaginatedSongListProps> = memo(({
           </HStack>
           
           {selectedSongs.size > 0 && (
-            <HStack spacing={2}>
-              <Button
+            <Menu>
+              <MenuButton
+                as={Button}
                 size="sm"
                 colorScheme="blue"
-                onClick={onPlaylistModalOpen}
+                rightIcon={<ChevronDownIcon />}
               >
-                Add to Playlist...
-              </Button>
-              {currentPlaylist !== "All Songs" && onRemoveFromPlaylist && (
-                <Button
-                  size="sm"
-                  variant="outline"
-                  colorScheme="red"
-                  onClick={() => {
-                    handleBulkRemoveFromPlaylist();
-                  }}
-                >
-                  Remove from {currentPlaylist}
-                </Button>
-              )}
-            </HStack>
+                Actions
+              </MenuButton>
+              <MenuList>
+                <MenuItem onClick={onPlaylistModalOpen}>
+                  Add to Playlist...
+                </MenuItem>
+                {currentPlaylist !== "All Songs" && onRemoveFromPlaylist && (
+                  <>
+                    <MenuDivider />
+                    <MenuItem
+                      color="red.300"
+                      onClick={handleBulkRemoveFromPlaylist}
+                    >
+                      Remove from {currentPlaylist}
+                    </MenuItem>
+                  </>
+                )}
+              </MenuList>
+            </Menu>
           )}
         </Flex>
       </Box>

packages/frontend/src/components/SongList.tsx

@@ -19,7 +19,7 @@ import { Input, InputGroup, InputLeftElement } from "@chakra-ui/input";
 import { Search2Icon, ChevronDownIcon } from "@chakra-ui/icons";
 import { FiPlay, FiMusic } from 'react-icons/fi';
 import type { Song, PlaylistNode } from "../types/interfaces";
-import { useState, useCallback, useMemo } from "react";
+import { useState, useCallback, useMemo, useEffect } from "react";
 
 import { formatDuration, formatTotalDuration } from '../utils/formatters';
 
@@ -33,6 +33,7 @@ interface SongListProps {
   currentPlaylist: string | null;
   depth?: number;
   onPlaySong?: (song: Song) => void;
+  isSwitchingPlaylist?: boolean;
 }
 
 export const SongList: React.FC<SongListProps> = ({ 
@@ -44,11 +45,19 @@ export const SongList: React.FC<SongListProps> = ({
   selectedSongId,
   currentPlaylist,
   depth = 0,
-  onPlaySong
+  onPlaySong,
+  isSwitchingPlaylist = false
 }) => {
   const [selectedSongs, setSelectedSongs] = useState<Set<string>>(new Set());
   const [searchQuery, setSearchQuery] = useState("");
 
+  // Clear selection when switching playlists
+  useEffect(() => {
+    if (isSwitchingPlaylist) {
+      setSelectedSongs(new Set());
+    }
+  }, [isSwitchingPlaylist]);
+
   // Helper function to get all playlists (excluding folders) from the playlist tree
   const getAllPlaylists = useCallback((nodes: PlaylistNode[]): PlaylistNode[] => {
     let result: PlaylistNode[] = [];
@@ -270,7 +279,7 @@ export const SongList: React.FC<SongListProps> = ({
                   fontSize={depth > 0 ? "xs" : "sm"} 
                   color={selectedSongId === song.id ? "gray.300" : "gray.500"}
                 >
-                  {song.artist} • {formatDuration(song.totalTime)}
+                  {song.artist} • {formatDuration(song.totalTime)}{song.tonality ? ` - ${song.tonality}` : ''}
                 </Text>
                 {song.location && (
                   <Text 

packages/frontend/src/pages/Configuration.tsx

@@ -266,7 +266,7 @@ export function Configuration() {
             {/* Song Matching Tab */}
             <TabPanel bg="gray.800" p={6} borderRadius="lg" borderWidth="1px" borderColor="gray.700">
               <VStack spacing={6} align="stretch">
-                <Heading size="md" color="white">Sync and Matching</Heading>
+                <Heading size="md" color="white">Sync and Matching ({storageProvider})</Heading>
                 <HStack spacing={3}>
                   <Button
                     leftIcon={<FiRefreshCw />}
@@ -274,7 +274,7 @@ export function Configuration() {
                     variant="solid"
                     onClick={() => api.startStorageSync()}
                   >
-                    Sync {storageProvider} (incremental)
+                    Sync (incremental)
                   </Button>
                   <Button
                     leftIcon={<FiRefreshCw />}
@@ -282,7 +282,7 @@ export function Configuration() {
                     variant="outline"
                     onClick={() => api.startStorageSync({ force: true })}
                   >
-                    Force {storageProvider} Sync (rescan all)
+                    Force Sync (rescan all)
                   </Button>
                   <Button
                     leftIcon={<FiTrash2 />}
@@ -290,7 +290,7 @@ export function Configuration() {
                     variant="outline"
                     onClick={() => api.startStorageSync({ clearLinks: true, force: true })}
                   >
-                    Clear Links + Force {storageProvider} Sync
+                    Clear Links + Force Sync
                   </Button>
                 </HStack>
                 <SongMatching />