fix: reset terminal e stdout flush per CLI semplice

- stty sane resetta il terminale dopo EnhancedCLI fallito
- sys.stdin.readline() invece di input() per terminali problematici
- stdout flush prima di read per garantire prompt visibile

langcode.py

@@ -142,13 +142,23 @@ def cmd_chat(args):
                 print("📝 Uso CLI semplice...")
 
         # CLI semplice con input()
+        # Reset terminal state dopo eventuale EnhancedCLI fallito
+        import subprocess
+        try:
+            subprocess.run(["stty", "sane"], check=False, capture_output=True)
+        except:
+            pass
+        
         print("\n" + "=" * 60)
         print(" CLI SEMPLICE - digita /exit per uscire")
         print("=" * 60 + "\n")
 
         while True:
             try:
-                user_input = input("❯ ").strip()
+                sys.stdout.flush()
+                sys.stdout.write("❯ ")
+                sys.stdout.flush()
+                user_input = sys.stdin.readline().strip()
                 
                 if not user_input:
                     continue