A card's actions fit a phone

On a phone the card's action row was about 371px wide against a 228px text column, so the feed scrolled sideways and
More and Expand fell off the screen. Below md the author's picture moves from its own column into the card's header,
which gives the text, media and polls the whole width (288px at 360), and the actions are five equal cells: Reply,
Boost, Favourite, React and More. Bookmark and the thread are entries in More there; the downvotes, the counts icon and
Expand show from md. Counts are compacted on phones (1.2k, 12k, 1.2M, GenericExtensions.Compact). React and More open
as sheets from the bottom of the screen, the reactions as a grid of four. The author's name and handle stack and are
14px, the place badge is narrower, and "edited" and the booster's name have 44px hit areas; the booster's name opens
their profile in the app instead of their site. On touch the extra small buttons' text is 14px, and their hit area is
a full 44px (the ::after sits against the padding box, inside the border). Desktop keeps its row.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

Extensions/GenericExtensions.cs

@@ -57,6 +57,15 @@ public static class GenericExtensions
 		};
 	}
 
+	// a count as a phone's narrow action buttons show it: 999, 1.2k, 12k, 1.2M
+	public static string Compact(this int count) => count switch
+	{
+		< 1000 => count.ToString(CultureInfo.CurrentCulture),
+		< 10_000 => (count / 1000d).ToString("0.#", CultureInfo.CurrentCulture) + "k",
+		< 1_000_000 => (count / 1000).ToString(CultureInfo.CurrentCulture) + "k",
+		_ => (count / 1_000_000d).ToString("0.#", CultureInfo.CurrentCulture) + "M"
+	};
+
 	public static string GetFileSize(this long size, CoalescingStringLocalizer localizer) => size switch
 	{
 		>= 1_048_576 => localizer["{0}MB", size / 1_048_576],