fix: daemon port conflict handling, multi-port TUI connect

- start-daemon: handle ADDRESS-IN-USE-ERROR by trying ports 9105-9115
  instead of crashing. Logs which port is used.
- Add *daemon-port* defvar to track actual listening port
- main: wrap start-daemon in handler-case so the daemon doesn't
  crash if all ports are in use
- connect-daemon (TUI): try ports 9105-9115 with 2s timeout each
  instead of retrying the same port 3 times
- Add debug messages for connection success and disconnection timestamp

org/core-pipeline.org

@@ -367,7 +367,10 @@ Boot sequence:
   
   (when (fboundp 'events-start-heartbeat)
     (events-start-heartbeat))
-  (start-daemon)
+  (handler-case (start-daemon)
+    (error (c)
+      (log-message "DAEMON: Failed to start — ~a" c)
+      (format *error-output* "~&DAEMON: Failed to start — ~a~%" c)))
 
   #+sbcl
   (sb-sys:enable-interrupt sb-unix:sigint