Session Board 0.9.1

• The board deletes heartbeat records older than a day from %TEMP%\claude-sessions-board while it reads them. Before, one record per window start stayed behind for good and every poll in every window parsed all of them (213 files on one machine after five weeks). A record over 45 s old was and is ignored; it now also goes after a day, as does a .tmp file a dying writer left behind
• The 0.9.0 entry below names the blind marker path correctly again (a stray control character had eaten a letter)