Clarify ETA messaging and reuse formatter

Trading Pattern Recon w Hurst v.3.1.6.py

@@ -136,6 +136,18 @@ def clamp01(x):
         return np.nan
     return float(min(1.0, max(0.0, x)))
 
+
+def format_eta(seconds):
+    """Format a duration (seconds) as Xm Ys or Xh Ym Ys for readability."""
+    if not np.isfinite(seconds):
+        return "n/a"
+    seconds = max(0, int(round(seconds)))
+    minutes, secs = divmod(seconds, 60)
+    hours, minutes = divmod(minutes, 60)
+    if hours:
+        return f"{hours}h {minutes:02d}m {secs:02d}s"
+    return f"{minutes}m {secs:02d}s"
+
 # ================= HURST (sui RENDIMENTI) =================
 def hurst_rs_returns(r, win_grid=None, min_seg=1):
     r = pd.Series(r).dropna().astype("float64").values
@@ -917,12 +929,17 @@ for i, isin in enumerate(isins, 1):
     avg_t = total_t / i
     eta   = avg_t * (len(isins) - i)
 
-    print(f"… backtest {i}/{len(isins)} completati — {dt:.2f} sec (avg {avg_t:.2f}s, ETA {eta:.1f}s)")
+    print(
+        f"… backtest {i}/{len(isins)} completati — {dt:.2f} sec "
+        f"(avg {avg_t:.2f}s, ETA {format_eta(eta)} rimanenti)"
+    )
 
 # ---- TIMER FINALE ----
 end_all = time.perf_counter()
-print(f"⏱️ Tempo totale: {end_all - start_all:.2f} sec")
-print(f"⏱️ Tempo medio per asset: {(end_all - start_all)/len(isins):.2f} sec")
+total_elapsed = end_all - start_all
+avg_elapsed = total_elapsed / max(len(isins), 1)
+print(f"⏱️ Tempo totale: {format_eta(total_elapsed)} ({total_elapsed:.2f} sec)")
+print(f"⏱️ Tempo medio per asset: {format_eta(avg_elapsed)} ({avg_elapsed:.2f} sec)")
 
 
 bt_signals_df = pd.concat(bt_signals, ignore_index=True) if bt_signals else pd.DataFrame(