fix(ui): receipt pill, insights counts, settings dividers, decoration preview (#269-#273)

#269 read-receipt pill sits at the message row's right edge, not where
     the text ends (outside the shrink-to-fit content column; grows in
     Compact). Bubble layout unchanged.
#270 Most Active Members: the bar's % is of its own track, so every row
     shows its count.
#271 Noise Suppression description at T200 like the rest.
#272 decoration preview shows your own avatar under the decoration; the
     empty state is a visible dashed circle.
#273 grouped settings get a divider between tiles (SettingTileGroup, via
     globalStyle; SettingTile roots carry data-setting-tile), and on phones
     the Sync tile's buttons sit under its description.

Fixes #269
Fixes #270
Fixes #271
Fixes #272
Fixes #273

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

src/app/features/room/message/Message.tsx

@@ -1137,25 +1137,31 @@ export const Message = React.memo(
         </AvatarBase>
       );
 
+      // [Gitea #269] The content column shrinks to the message's width; the
+      // receipt pill / delivery status sit OUTSIDE it, in a full-width column,
+      // so their `margin-left: auto` reaches the row's right edge instead of
+      // wherever the text happens to end.
       const msgContentJSX = (
-        <Box direction="Column" alignSelf="Start" style={{ maxWidth: '100%' }}>
-          {reply}
-          {edit && onEditId ? (
-            <MessageEditor
-              style={{
-                maxWidth: '100%',
-                width: '100vw',
-              }}
-              roomId={room.roomId}
-              room={room}
-              mEvent={mEvent}
-              imagePackRooms={imagePackRooms}
-              onCancel={() => onEditId()}
-            />
-          ) : (
-            children
-          )}
-          {reactions}
+        <Box direction="Column" style={{ maxWidth: '100%', flexGrow: 1, minWidth: 0 }}>
+          <Box direction="Column" alignSelf="Start" style={{ maxWidth: '100%' }}>
+            {reply}
+            {edit && onEditId ? (
+              <MessageEditor
+                style={{
+                  maxWidth: '100%',
+                  width: '100vw',
+                }}
+                roomId={room.roomId}
+                room={room}
+                mEvent={mEvent}
+                imagePackRooms={imagePackRooms}
+                onCancel={() => onEditId()}
+              />
+            ) : (
+              children
+            )}
+            {reactions}
+          </Box>
           {readReceiptUsers.length > 0 && (
             <ReadReceiptAvatars
               room={room}