feat: add MxjsClient for lightweight Matrix client functionality

- Implemented core methods for user authentication (register, login, logout).
- Added room management features (createRoom, joinRoom, leaveRoom, inviteUser).
- Included message handling capabilities (sendMessage, editMessage, redactEvent).
- Introduced user moderation actions (kickUser, banUser, unbanUser).
- Implemented profile management (getProfile, setDisplayName, setAvatarUrl).
- Added support for media uploads and fetching messages from room timelines.
- Included event handling with emit and on methods for custom event listeners.
- Sanitization of HTML content and mention handling in messages.

website/scripts/commands/numbermatch.js

@@ -253,13 +253,9 @@ class NumberMatchGame {
             }
         }
 
-        // Wrap-around horizontal (end of one row to start of next)
-        if (rowEnd === rowStart + 1 && colStart === this.width - 1 && colEnd === 0) {
-            // Adjacent via wrap
-            return true;
-        }
-        if (diff === 1 || diff === this.width) {
-            // Directly adjacent
+        // Wrap-around: scan reading order across row boundaries (right to end of row,
+        // down to next row, left-to-right until reaching the second tile)
+        if (rowStart !== rowEnd && this.isSegmentClear(start, end, 1)) {
             return true;
         }