Reflect backend change on webapp

web/templates/index.html

@@ -265,18 +265,13 @@
     <div class="type-section" id="music-fields">
       <hr>
       <div class="field">
-        <label>Artist  <span style="color:var(--muted);font-weight:400">(Jellyfin artist folder)</span></label>
-        <div class="folder-row">
-          <select id="artist-folder-select" onchange="onArtistFolderSelect()">
-            <option value="">— choose existing —</option>
-          </select>
-          <input type="text" id="artist" placeholder="or type a new artist name" oninput="updatePathPreview()">
-        </div>
+        <label>Artist  <span style="color:var(--muted);font-weight:400">(embedded tag; used for the Singles folder when no album)</span></label>
+        <input type="text" id="artist" placeholder="e.g. Nujabes" oninput="updatePathPreview()">
       </div>
       <div class="row-2">
         <div class="field">
-          <label>Album  <span style="color:var(--muted);font-weight:400">(optional)</span></label>
-          <input type="text" id="album" placeholder="Leave blank for flat artist folder" oninput="updatePathPreview()">
+          <label>Album  <span style="color:var(--muted);font-weight:400">(folder name in Music/)</span></label>
+          <input type="text" id="album" placeholder="Blank → &lt;Artist&gt; - Singles" oninput="updatePathPreview()">
         </div>
         <div class="field">
           <label>Track number  <span style="color:var(--muted);font-weight:400">(optional)</span></label>
@@ -397,7 +392,6 @@ async function loadBrowseData() {
 
 function populateFolderSelects() {
   populateSelect('series-folder-select', browseData.Shows || [], '— choose existing —');
-  populateSelect('artist-folder-select', browseData.Music || [], '— choose existing —');
 }
 
 function populateSelect(id, items, placeholder) {
@@ -414,12 +408,6 @@ function onSeriesFolderSelect() {
   updatePathPreview();
 }
 
-function onArtistFolderSelect() {
-  const val = document.getElementById('artist-folder-select').value;
-  document.getElementById('artist').value = val;
-  updatePathPreview();
-}
-
 // ── Audio format selector ─────────────────────────────────────────────────────
 const FORMAT_HINTS = {
   m4a:  '(M4A/AAC — universal Jellyfin direct-play)',
@@ -581,9 +569,7 @@ function getSeriesName() {
 }
 
 function getArtistName() {
-  return document.getElementById('artist-folder-select').value ||
-         document.getElementById('artist').value.trim() ||
-         'Artist Name';
+  return document.getElementById('artist').value.trim() || 'Artist Name';
 }
 
 function updatePathPreview() {
@@ -708,8 +694,6 @@ function clearForm() {
   document.getElementById('episode').value = '1';
   const seriesSelect = document.getElementById('series-folder-select');
   if (seriesSelect) seriesSelect.value = '';
-  const artistSelect = document.getElementById('artist-folder-select');
-  if (artistSelect) artistSelect.value = '';
   const formatSel = document.getElementById('format');
   if (formatSel) {
     formatSel.value = 'm4a';