fix(flutter): artist albums grid — 3 per row, title wraps, no overflow

AlbumCard gains optional `width` (default 140 keeps horizontal lists
unchanged) and `titleMaxLines` (default 1) so callers can let the
title wrap to a second line. Cover sizes to width - 16 instead of a
hardcoded 124, so the card scales down cleanly when a narrower cell
width is passed in.

Artist detail grid: switch to 3 columns. LayoutBuilder computes the
cell width from the available width so AlbumCard sizes to the cell
exactly (no overflow). cellH = cover + gap + 2-line title + artist
line + small fudge — tight enough that there's no visible gap below
the card, tall enough to fit a wrapped title.

flutter_client/lib/library/widgets/album_card.dart

@@ -6,47 +6,69 @@ import '../../shared/widgets/server_image.dart';
 import '../../theme/theme_extension.dart';
 
 class AlbumCard extends StatelessWidget {
-  const AlbumCard({required this.album, required this.onTap, super.key});
+  const AlbumCard({
+    required this.album,
+    required this.onTap,
+    this.width = 140,
+    this.titleMaxLines = 1,
+    super.key,
+  });
   final AlbumRef album;
   final VoidCallback onTap;
 
+  /// Outer width of the card. Cover is square at width - 16 (8dp
+  /// horizontal padding either side). Default suits horizontal lists;
+  /// grids should pass the cell width so the card scales down.
+  final double width;
+
+  /// Lets callers (e.g. the artist detail grid) allow the title to
+  /// wrap to a second line so it isn't truncated to a single
+  /// ellipsized character at narrower widths.
+  final int titleMaxLines;
+
   @override
   Widget build(BuildContext context) {
     final fs = Theme.of(context).extension<FabledSwordTheme>()!;
+    final coverSize = width - 16;
     return SizedBox(
-      width: 140,
+      width: width,
       child: Material(
         color: Colors.transparent,
         child: InkWell(
           onTap: onTap,
           child: Padding(
             padding: const EdgeInsets.symmetric(horizontal: 8),
-            child: Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
-            ClipRRect(
-              borderRadius: BorderRadius.circular(6),
-              child: Container(
-                width: 124,
-                height: 124,
-                color: fs.slate,
-                child: album.coverUrl.isEmpty
-                    ? SvgPicture.asset('assets/svg/album-fallback.svg', fit: BoxFit.cover)
-                    : ServerImage(url: album.coverUrl, fit: BoxFit.cover),
-              ),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                ClipRRect(
+                  borderRadius: BorderRadius.circular(6),
+                  child: Container(
+                    width: coverSize,
+                    height: coverSize,
+                    color: fs.slate,
+                    child: album.coverUrl.isEmpty
+                        ? SvgPicture.asset('assets/svg/album-fallback.svg',
+                            fit: BoxFit.cover)
+                        : ServerImage(url: album.coverUrl, fit: BoxFit.cover),
+                  ),
+                ),
+                const SizedBox(height: 8),
+                Text(
+                  album.title,
+                  maxLines: titleMaxLines,
+                  overflow: TextOverflow.ellipsis,
+                  style: TextStyle(color: fs.parchment, fontSize: 14),
+                ),
+                Text(
+                  album.artistName,
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  style: TextStyle(color: fs.ash, fontSize: 12),
+                ),
+              ],
             ),
-            const SizedBox(height: 8),
-            Text(
-              album.title,
-              maxLines: 1,
-              overflow: TextOverflow.ellipsis,
-              style: TextStyle(color: fs.parchment, fontSize: 14),
-            ),
-            Text(
-              album.artistName,
-              maxLines: 1,
-              overflow: TextOverflow.ellipsis,
-              style: TextStyle(color: fs.ash, fontSize: 12),
-            ),
-          ]),
           ),
         ),
       ),