Add debug output for wsssh process startup and output reading

wssshd.py

@@ -195,9 +195,10 @@ def connect_terminal(client_id):
     # Start a thread to read output
     output_buffer = []
     def read_output():
+        output_buffer.append('Process started, reading output...\r\n')
         while proc.poll() is None:
             try:
-                data = proc.stdout.read(1024)
+                data = proc.stdout.read(1)  # Read byte by byte for real-time
                 if data:
                     output_buffer.append(data.decode('utf-8', errors='ignore'))
             except:
@@ -209,10 +210,13 @@ def connect_terminal(client_id):
                 output_buffer.append(data.decode('utf-8', errors='ignore'))
         except:
             pass
+        output_buffer.append('\r\nProcess finished.\r\n')
 
     thread = threading.Thread(target=read_output, daemon=True)
     thread.start()
 
+    if proc.poll() is not None:
+        output_buffer.append(f'\r\nProcess failed to start, exit code: {proc.returncode}\r\n')
     active_terminals[request_id] = {'client_id': client_id, 'username': username, 'proc': proc, 'output_buffer': output_buffer}
     return jsonify({'request_id': request_id, 'command': ' '.join(command)})