feat(artist): minimal icon-only pin button + show all Deezer releases (Android)

- Pin ("Falscher Künstler?") is now a small icon-only ⚙ chip on both web
  and Android — accent-blue when pinned, subtle white otherwise; no more
  text banner over the hero.
- Android artist discography no longer filters to record_type=="album";
  it now shows albums, EPs AND singles (ordered albums→EPs→singles),
  matching Deezer's own artist page. Web already showed all.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/views/detail.js

@@ -99,9 +99,10 @@ export async function loadArtistDetail(artist) {
     hero.querySelector('.artist-pin-btn')?.remove();
     const pinBtn = document.createElement('button');
     pinBtn.className = 'artist-pin-btn';
-    pinBtn.textContent = _pin ? '⚙ Gepinnt' : '⚙ Falscher Künstler?';
-    pinBtn.title = 'Richtigen Deezer-Künstler wählen';
-    pinBtn.style.cssText = 'position:absolute;top:12px;right:12px;z-index:5;padding:5px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.25);background:rgba(0,0,0,.45);color:#fff;font-family:var(--font);font-size:12px;font-weight:600;cursor:pointer;backdrop-filter:blur(4px)';
+    pinBtn.textContent = '⚙';
+    pinBtn.title = _pin ? 'Gepinnt — anderen Deezer-Künstler wählen' : 'Falscher Künstler? Richtigen Deezer-Künstler wählen';
+    // Minimal: a small, subtle icon-only chip in the corner (not a text banner).
+    pinBtn.style.cssText = `position:absolute;top:10px;right:10px;z-index:5;width:30px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:999px;border:1px solid rgba(255,255,255,.16);background:rgba(0,0,0,.35);color:${_pin ? 'var(--accent)' : 'rgba(255,255,255,.72)'};font-size:14px;line-height:1;cursor:pointer;backdrop-filter:blur(4px)`;
     pinBtn.onclick = () => openArtistPin(artist.id, artist.name);
     hero.appendChild(pinBtn);
   }