feat: show iTunes enrichment status indicator in Spotify importer

src/spotify.js

@@ -189,6 +189,26 @@ function _renderSpotifyPreview(data) {
   }
 }
 
+function _setEnrichStatus(done, current, total) {
+  const el = document.getElementById('spotify-enrich-status');
+  if (!el) return;
+  if (done) {
+    el.className = 'done';
+    el.innerHTML = '<svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5"><polyline points="20 6 9 17 4 12"/></svg> iTunes-Daten geladen';
+    el.style.display = 'flex';
+    el.style.opacity = '1';
+    setTimeout(() => {
+      el.style.opacity = '0';
+      setTimeout(() => { el.style.display = 'none'; el.className = ''; }, 400);
+    }, 2000);
+  } else {
+    el.className = '';
+    el.innerHTML = `<div class="enrich-spinner"></div> Lade iTunes-Daten… (${current}/${total})`;
+    el.style.display = 'flex';
+    el.style.opacity = '1';
+  }
+}
+
 async function _loadSpotifyTrackArtwork(tracks, listEl) {
   const artEls = listEl.querySelectorAll('.gtrack-art');
 
@@ -203,6 +223,8 @@ async function _loadSpotifyTrackArtwork(tracks, listEl) {
 
   // Enrich each track with iTunes data — same call as global search
   const CONC = 4;
+  let enriched = 0;
+  _setEnrichStatus(false, 0, tracks.length);
   for (let i = 0; i < tracks.length; i += CONC) {
     const batch = tracks.slice(i, i + CONC);
     await Promise.all(batch.map(async (t, bi) => {
@@ -239,8 +261,11 @@ async function _loadSpotifyTrackArtwork(tracks, listEl) {
           }
         }
       } catch { /* non-critical */ }
+      enriched++;
+      _setEnrichStatus(false, enriched, tracks.length);
     }));
   }
+  _setEnrichStatus(true);
 }
 
 function _startRateLimitCountdown(inner, totalSecs) {