fix(18-02): add field labels above title/artist/album inputs in batch edit mode

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

@@ -510,6 +510,20 @@ export class TrackDetails extends LitElement {
             color: var(--yj-text-tertiary, #888);
         }
 
+        .main-field-group {
+            display: flex;
+            flex-direction: column;
+            gap: 2px;
+        }
+
+        .main-field-label {
+            font-size: var(--yj-text-xs);
+            font-weight: 500;
+            color: var(--yj-text-tertiary, #888);
+            text-transform: uppercase;
+            letter-spacing: 0.5px;
+        }
+
         .mixed-value {
             color: var(--yj-text-tertiary, #888);
             font-style: italic;
@@ -812,6 +826,8 @@ export class TrackDetails extends LitElement {
                 <span class="batch-header">
                     Editing ${this.batchTracks.length} tracks
                 </span>
+                <div class="main-field-group">
+                    <label class="main-field-label">Title</label>
                     <input
                         class="main-input title-input"
                         .value=${this.getEditValue(
@@ -824,6 +840,9 @@ export class TrackDetails extends LitElement {
                             ? 'Multiple values'
                             : 'Title'}
                     />
+                </div>
+                <div class="main-field-group">
+                    <label class="main-field-label">Artist</label>
                     <input
                         class="main-input artist-input"
                         .value=${this.getEditValue(
@@ -836,6 +855,9 @@ export class TrackDetails extends LitElement {
                             ? 'Multiple values'
                             : 'Artist'}
                     />
+                </div>
+                <div class="main-field-group">
+                    <label class="main-field-label">Album</label>
                     <input
                         class="main-input album-input"
                         .value=${this.getEditValue(
@@ -848,6 +870,7 @@ export class TrackDetails extends LitElement {
                             ? 'Multiple values'
                             : 'Album'}
                     />
+                </div>
             `;
         }