Add TERM env and debug output to troubleshoot PTY

wssshd.py

@@ -193,30 +193,38 @@ def connect_terminal(client_id):
         stdin=slave,
         stdout=slave,
         stderr=slave,
-        preexec_fn=os.setsid
+        preexec_fn=os.setsid,
+        env=dict(os.environ, TERM='xterm')
     )
     os.close(slave)
 
     # Start a thread to read output
     output_buffer = []
     def read_output():
+        output_buffer.append(f'Process PID: {proc.pid}\r\n')
         while proc.poll() is None:
             r, w, e = select.select([master], [], [], 0.1)
             if master in r:
                 try:
                     data = os.read(master, 1024)
                     if data:
-                        output_buffer.append(data.decode('utf-8', errors='ignore'))
+                        decoded = data.decode('utf-8', errors='ignore')
+                        output_buffer.append(decoded)
+                        # Debug: print to server log
+                        print(f"Read data: {repr(decoded)}")
                 except:
                     break
         # Read any remaining data
         try:
             data = os.read(master, 1024)
             while data:
-                output_buffer.append(data.decode('utf-8', errors='ignore'))
+                decoded = data.decode('utf-8', errors='ignore')
+                output_buffer.append(decoded)
+                print(f"Read remaining: {repr(decoded)}")
                 data = os.read(master, 1024)
         except:
             pass
+        output_buffer.append('\r\nProcess finished.\r\n')
         os.close(master)
 
     thread = threading.Thread(target=read_output, daemon=True)