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>

android/app/src/main/kotlin/com/novasonic/app/api/ItunesClient.kt

@@ -64,12 +64,14 @@ object ItunesClient {
         return album.tracks?.data.orEmpty().mapIndexed { i, t -> t.toAlbumTrackItem(album, i) }
     }
 
-    /** A Deezer artist's real albums (not singles/EPs). */
+    /** A Deezer artist's full discography — albums, EPs AND singles, matching what Deezer's own
+     *  artist page shows. Ordered albums → EPs → singles (Deezer returns newest-first within each). */
     suspend fun lookupArtistAlbums(artistId: Long): List<ItunesItem> {
         val albums: DzList<DzAlbum> = http.get("$BASE/artist/$artistId/albums") {
             parameter("limit", 200)
         }.body()
-        return albums.data.filter { it.record_type == "album" }.map { it.toItunesItem() }
+        val rank = { rt: String? -> when (rt) { "album" -> 0; "ep" -> 1; "single" -> 2; else -> 3 } }
+        return albums.data.sortedBy { rank(it.record_type) }.map { it.toItunesItem() }
     }
 
     /**

android/app/src/main/kotlin/com/novasonic/app/ui/screen/ArtistDetailScreen.kt

@@ -255,18 +255,18 @@ fun ArtistDetailScreen(
                     contentScale = ContentScale.Crop,
                     modifier = Modifier.fillMaxSize(),
                 )
-                // "Wrong artist?" pin — top-right over the hero.
+                // "Wrong artist?" pin — minimal icon-only chip, top-right over the hero.
                 Surface(
                     onClick = { vm.openPinPicker() },
                     shape = RoundedCornerShape(999.dp),
-                    color = Color(0x66000000),
+                    color = Color(0x59000000),
                     modifier = Modifier.align(Alignment.TopEnd).padding(10.dp),
                 ) {
                     Text(
-                        if (state.pin != null) "⚙ Gepinnt" else "⚙ Falscher Künstler?",
-                        fontFamily = Outfit, fontSize = 12.sp, fontWeight = FontWeight.SemiBold,
-                        color = Color.White.copy(0.92f),
-                        modifier = Modifier.padding(horizontal = 12.dp, vertical = 7.dp),
+                        "⚙",
+                        fontSize = 14.sp,
+                        color = if (state.pin != null) Color(0xFF7EB8FF) else Color.White.copy(0.72f),
+                        modifier = Modifier.padding(horizontal = 8.dp, vertical = 6.dp),
                     )
                 }
                 Box(