feat(17-01): add TrackMetadataChanged handler and remove selection gate on Track Details

- LibraryStore now listens for TrackMetadataChanged and invalidates all caches
- Track Details context menu item visible for any right-clicked track in all 4 views
- Removed selectionCount === 1 gate from track-list, queue-panel, cover-grid, playlist-details

frontend/src/components/cover-grid/cover-grid.ts

@@ -2049,9 +2049,7 @@ export class CoverGrid
                               </wa-dropdown-item>
                               ${this.contextMenuTarget
                                       .kind ===
-                                  'track' &&
+                                  'track'
-                              this.selectedTracks
-                                  .size === 1
                                   ? html`
                                         <wa-dropdown-item
                                             @click=${() =>

frontend/src/components/playlist-details/playlist-details.ts

@@ -1489,10 +1489,6 @@ export class PlaylistDetails
                                           ? `Remove from ${this.favCtrl.playlistName}`
                                           : `Add to ${this.favCtrl.playlistName}`}
                                   </wa-dropdown-item>
-                                  ${this.selection
-                                      .selectionCount ===
-                                  1
-                                      ? html`
                                   <wa-dropdown-item
                                       @click=${() =>
                                           this.onContextMenuAction(
@@ -1508,8 +1504,6 @@ export class PlaylistDetails
                                       Track
                                       Details
                                   </wa-dropdown-item>
-                                        `
-                                      : nothing}
                               </div>
                           `
                     : nothing}

frontend/src/components/queue-panel/queue-panel.ts

@@ -1549,9 +1549,6 @@ export class QueuePanel
                                    ></wa-icon>
                                   ${this.favCtrl.allFavorited(this.getSelectedFilePaths()) ? `Remove from ${this.favCtrl.playlistName}` : `Add to ${this.favCtrl.playlistName}`}
                               </wa-dropdown-item>
-                              ${this.selection
-                                  .selectionCount === 1
-                                  ? html`
                               <wa-dropdown-item
                                   @click=${() =>
                                       this.onContextMenuAction(
@@ -1567,8 +1564,6 @@ export class QueuePanel
                                   Track
                                   Details
                               </wa-dropdown-item>
-                                    `
-                                  : nothing}
                           </div>
                       `
                     : nothing}

frontend/src/components/track-list/track-list.ts

@@ -1963,8 +1963,6 @@ export class TrackList extends LitElement implements SelectionHost, ContextMenuH
                   ></wa-icon>
                   ${this.favCtrl.allFavorited(this.selection.getSelectedKeysOrdered()) ? `Remove from ${this.favCtrl.playlistName}` : `Add to ${this.favCtrl.playlistName}`}
                 </wa-dropdown-item>
-                ${this.selection.selectionCount === 1
-                    ? html`
                 <wa-dropdown-item
                     @click=${() =>
                         this.onContextMenuAction(
@@ -1979,8 +1977,6 @@ export class TrackList extends LitElement implements SelectionHost, ContextMenuH
                     ></wa-icon>
                     Track Details
                 </wa-dropdown-item>
-                      `
-                    : nothing}
               </div>
             `
                 : nothing}

frontend/src/store/library-store.ts

@@ -82,6 +82,9 @@ class LibraryStore {
             this.changeGen++;
             this.notify();
         });
+        EventsOn(Events.TrackMetadataChanged, () => {
+            this.invalidate();
+        });
 
         this.loadCoverSize();
         this.deferEagerFetch();