File size: 188,886 Bytes
03e5649
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
815b2e9
 
 
 
 
 
 
 
03e5649
 
 
 
815b2e9
 
 
 
03e5649
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
815b2e9
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
03e5649
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
"""unified_loop_fallback.py — FallbackMixin: loop LLM principale (_run_fallback).

Estratto da unified_loop.py per ridurre il file principale da 3954 a ~640 righe.

Contiene:
  _run_fallback(state, on_step, ...):  loop LLM multi-step con planner, executor,
                                       verifier, goal_verifier, self-healing,
                                       browser vision, repair loop Python/HTML.

Dipendenze via MRO (self.*):
  DirectToolsMixin   — _run_direct_tools, _needs_tools, _is_simple_query
  PromptBuilderMixin — _build_messages, _compress_goal, _SYSTEM_IDENTITY
  LLMSelectionMixin  — _get_llm_for_goal, _get_fast_llm, _sanitize_agent_output
  HelpersMixin       — _run_fast_path, _proactive_reflect
  DelegateMixin      — _budget_replan_check, _run_in_loop_delegate
  RoutingMixin       — _extract_written_files, _CODE_RE
  VFSMixin           — _rollback_writes

Invariante B1: nessun corpo duplicato con unified_loop.py.
"""
from __future__ import annotations
from .fallback_utils import _is_refusal, _s759_bjac, _avg10
from .fallback_healer import StrategicHealer

import asyncio
import logging
import os
import re
from typing import Any

from agents.unified_loop_types import (
    StepCallback,
    UnifiedLoopState,
    _maybe_await,
    _LANG_INSTRUCTIONS,
    _ANALYTICAL_VERBS_RE,
    _TASK_VERBS_RE,
    _is_goal_ambiguous,
    _is_borderline_ambiguous,
    _BORDERLINE_FIX_RE,
    _BORDERLINE_HELP_RE,
    _BORDERLINE_MAKE_RE,
    _detect_user_lang,
)

_logger = logging.getLogger("agente_ai")

# QF-2: costanti timeout — replicate da unified_loop.py (evita circular import)
LLM_TIMEOUT:  float = float(os.getenv('LLM_CALL_TIMEOUT',  '60'))
TOOL_TIMEOUT: float = float(os.getenv('TOOL_CALL_TIMEOUT', '25'))


class FallbackMixin:
    async def _run_fallback(self, state: UnifiedLoopState,
                             on_step: StepCallback | None,
                             preloaded_tool_results: str = "",
                             preloaded_tool_exec_successes: int = 0,
                             preloaded_tool_exec_errors: int = 0) -> dict[str, Any]:
        outputs: list[str] = []
        try:
            from api.state import record_timing as _rtc_ttfa
            import time as _ttf_t
            _t_rs = getattr(self, '_t_run_start', None)
            if _t_rs is not None:
                _rtc_ttfa("ttfa_ms", (_ttf_t.monotonic() - _t_rs) * 1000)
        except Exception as _exc:
            _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
        # S402: Tool Integrity Guard — propagato da run() tramite _run_direct_tools()
        _tool_exec_successes = preloaded_tool_exec_successes
        _tool_exec_errors    = preloaded_tool_exec_errors
        exec_warn: list[str] = []  # S-LOOP1: init precoce — evita NameError se planner va in timeout (S640)

        if self.memory:
            mem_ctx = await self.memory.get_context(state.goal, code_length=len(state.context or ''))
            if mem_ctx:
                state.context = f"{state.context}\n\nMEMORIA:\n{mem_ctx}".strip()

        tool_results = preloaded_tool_results

        # S378: disclaimer quando la query è di tipo ricerca/notizie ma nessun dato
        # reale è disponibile — evita che l'LLM risponda in silenzio dal training.
        # S428: rimosso "rispondo con conoscenza al cut-off" — invitava hallucination.
        if not tool_results and re.search(
            r'\b(notizie|news|ultime|latest|breaking|recenti|aggiornamenti|'
            r'cerca\s+(?:online|sul\s+web|in\s+rete)|cerca\s*:|search\s*:|'
            r'ricerca\s+web|versione\s+(?:attuale|corrente|pi[u\xf9]\s+recente))\b',
            state.goal, re.IGNORECASE
        ):
            tool_results = (
                "[NOTA: strumenti di ricerca web non disponibili al momento]"
            )

        # F17+B7: planner per task di progettazione/implementazione — soglia ridotta a 10 chars
        # Bug: "crea app react" (14 chars) non attivava mai il planner (soglia era 50).
        # _NEEDS_PLAN_RE filtra già query semplici — len guard serve solo per 1-8 char input.
        _should_plan = (
            self.planner
            and not tool_results
            and bool(self._NEEDS_PLAN_RE.search(state.goal[:200]))
            and len(state.goal) > 10
        )
        # S-FMT-ORCH FIX-FASTFIX: piano sintetico per fix singoli (<180 chars, pattern typo/rename/change-to)
        # Salta ARCHITECT DeepSeek-R1 -> risparmio ~15s. Fallback safe: se no match, planner normale.
        _fast_fix_plan = None
        if (_should_plan
                and len(state.goal) < 180
                and bool(self._FAST_FIX_RE.search(state.goal[:200]))):
            _fast_fix_plan = {
                "summary": state.goal[:80],
                "subtasks": [{"id": 1, "description": state.goal, "tool": "apply_patch", "requires": []}],
                "complexity": "low",
            }
            _logger.info("S-FMT-ORCH fast-fix: piano sintetico iniettato, skip ARCHITECT")
        _t0_plan = asyncio.get_running_loop().time()  # Sprint 5 ITEM 13: plan_ms timing
        if _should_plan:
            if on_step:
                await _maybe_await(on_step({
                    "loop": 0, "action": "plan", "status": "started",
                    "title": "Pianificazione",
                    "explanation": "Analizzo la richiesta e preparo un piano",
                }))
            # S640: timeout planner + S-FMT-ORCH fast-fix bypass
            # Se _fast_fix_plan disponibile, salta ARCHITECT (~15s risparmiati)
            if _fast_fix_plan is not None:
                plan = _fast_fix_plan
                _logger.info("S-FMT-ORCH fast-fix: ARCHITECT bypassato")
            else:
                # S640: timeout sul planner — DeepSeek-R1 può essere lento ma non deve bloccare
                # 30s è il 95° percentile osservato su prompt lunghi; oltre è quasi certamente stall.
                # Su timeout: plan=None → esecuzione diretta senza subtask (comportamento pre-planner).
                try:
                    plan = await asyncio.wait_for(
                        self.planner.create_plan(
                            state.goal, context=[{"role": "system", "content": state.context}]
                        ),
                        timeout=30.0,
                    )
                except asyncio.TimeoutError:
                    plan = None
                    _logger.warning("S640 planner timeout (30s) su goal: %s", state.goal[:80])
                    exec_warn.append("⚠ [S640] piano non disponibile (timeout pianificatore 30s)")
                    if on_step:
                        await _maybe_await(on_step({
                            "loop": 0, "action": "plan", "status": "warning",
                            "title": "Pianificazione scaduta",
                            "explanation": "Il pianificatore ha impiegato troppo — procedo senza piano",
                            "visibility": "progress",
                        }))
            if plan is not None:
                state.steps.append({"action": "plan", "result": plan})
            try:
                from api.state import record_timing as _rtc_pl
                _rtc_pl("plan_ms", (asyncio.get_running_loop().time() - _t0_plan) * 1000)
            except Exception as _exc:
                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
            # S641: guard plan is not None prima di on_step e executor
            # piano può essere None dopo timeout S640 — plan.get() crasherebbe con AttributeError
            if plan is not None and on_step:
                await _maybe_await(on_step({
                    "loop": 0, "action": "plan", "status": "done",
                    "title": "Piano creato",
                    "explanation": f"Piano con {len(plan.get('subtasks', []))} passaggi — inizio esecuzione",
                    "subtasks": len(plan.get("subtasks", [])),
                }))

            if self.executor and plan is not None and plan.get("subtasks"):
                # S574-GAP4: completata _TOOL_MAP — read_page/code/calculate/image
                # Prima: solo web_search eseguito; tutti gli altri subtask silenziosamente saltati
                # Ora: 5 tool reali mappati → subtask del planner eseguiti davvero
                _TOOL_MAP: dict[str, tuple[str, Any]] = {
                    "web_search":      ("web_search",     lambda desc: {"query": desc}),
                    "read_page":       ("read_page",      lambda desc: {"url": desc}),
                    "code":            ("run_python",     lambda desc: {"code": desc}),
                    "calculate":       ("calculate",      lambda desc: {"expression": desc}),
                    "image":           ("generate_image", lambda desc: {"prompt": desc}),
                    # S601: nuovi tool V001-V007 aggiunti al planner — mappa anche questi
                    "web_research":    ("web_research",   lambda desc: {"topic": desc, "depth": 4, "synthesize": True}),
                    "generate_image":  ("generate_image", lambda desc: {"prompt": desc}),
                    "run_python":      ("run_python",     lambda desc: {"code": desc}),
                    "send_email":      ("send_email",     lambda desc: {
                        # S643: estrai destinatario dalla descrizione — pattern "a <email>" o "to <email>"
                        "to": (lambda m: m.group(1) if m else "")(
                            __import__("re").search(
                                r"\b(?:a|to|invia\s+a|send\s+to)\s+([\w.+-]+@[\w-]+\.[\w.]+)",
                                desc, __import__("re").IGNORECASE
                            )
                        ),
                        "subject": desc[:80],
                        "body": desc,
                    }),
                    "database_query":  ("database_query", lambda desc: {"sql": desc}),
                    "execute_sql":     ("execute_sql",    lambda desc: {"sql": desc}),
                    "create_pdf":      ("create_pdf",     lambda desc: {
                        # S644+S645: estrai filename/title dalla prima frase (max 60 chars)
                        # S645: _create_pdf usa "filename" non "title" — fix campo ignorato
                        "content": desc,
                        "filename": (
                            __import__("re").sub(r"[^\w\-]", "_",
                                desc.split(".")[0][:50].strip() or "documento"
                            ).lower() + ".pdf"
                        ),
                    }),
                    "call_api":        ("call_api",       lambda desc: {
                        # S644: estrai URL e method dalla description
                        "url": (lambda m: m.group(0) if m else desc)(
                            __import__("re").search(r"https?://[\S]+", desc)
                        ),
                        "method": (
                            "POST" if __import__("re").search(r"\b(post|invia|crea|create|send)\b", desc, 2) else
                            "PUT"  if __import__("re").search(r"\b(put|aggiorna|update|modifica)\b", desc, 2) else
                            "DELETE" if __import__("re").search(r"\b(delete|elimina|cancella|remove)\b", desc, 2) else
                            "GET"
                        ),
                    }),
                    # S659: write_file/read_file/apply_patch mancanti da _TOOL_MAP.
                    # Quando il planner generava subtask con questi tool, _TOOL_MAP.get()
                    # restituiva (None, None) → subtask silenziosamente saltati (nessuna esecuzione).
                    # Fix: aggiunta mapping con estrazione path dalla description.
                    "write_file":  ("write_file",  lambda desc: {
                        "path": (lambda m: m.group(1) if m else "output.txt")(
                            __import__("re").search(
                                r"\b([\w./\-]+/[\w./\-]+\.[a-zA-Z]{1,10}|[\w\-]+\.[a-zA-Z]{1,10})\b",
                                desc
                            )
                        ),
                        "content": desc,
                    }),
                    "read_file":   ("read_file",   lambda desc: {
                        "path": (lambda m: m.group(1) if m else desc.strip()[:200])(
                            __import__("re").search(
                                r"\b([\w./\-]+/[\w./\-]+\.[a-zA-Z]{1,10}|[\w\-]+\.[a-zA-Z]{1,10})\b",
                                desc
                            )
                        ),
                    }),
                    "apply_patch": ("apply_patch", lambda desc: {
                        "path": (lambda m: m.group(1) if m else "output.txt")(
                            __import__("re").search(
                                r"\b([\w./\-]+/[\w./\-]+\.[a-zA-Z]{1,10}|[\w\-]+\.[a-zA-Z]{1,10})\b",
                                desc
                            )
                        ),
                        "patch": desc,
                    }),
                    # S669: execute_shell mancava da _TOOL_MAP — il planner poteva assegnare
                    # tool="execute_shell" ma _TOOL_MAP.get() → (None, None) → subtask saltato
                    # silenziosamente. Aggiunto mapping con estrazione comando da description.
                    "execute_shell": ("execute_shell", lambda desc: {
                        "command": next(iter(__import__("re").findall(r"`([^`]{1,200})`", desc)), desc.strip()[:200]),
                    }),
                    # S764: 10 nuovi tool (S763 registry) aggiunti a _TOOL_MAP
                    "directory_tree": ("directory_tree", lambda desc: {
                        "path": next(iter(__import__("re").findall(
                            r"[./][\w./\-]+|\b[\w\-]+/[\w./\-]+", desc
                        )), "."),
                        "max_depth": 3,
                    }),
                    "file_search": ("file_search", lambda desc: {
                        "pattern": (lambda m: m.group(1) if m else desc.strip()[:80])(
                            __import__("re").search(
                                r"(?:grep\s+|cerca\s+|trova\s+|pattern[:\s]+)['\s]*([\w.\-\(\)\[\]]+)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "path": ".",
                    }),
                    "git_status": ("git_status", lambda desc: {
                        "cwd": next(iter(__import__("re").findall(
                            r"[./][\w./\-]+|\b[\w\-]+/[\w./\-]+", desc
                        )), "."),
                    }),
                    "git_clone": ("git_clone", lambda desc: {
                        "url": (lambda m: m.group(0) if m else "")(
                            __import__("re").search(
                                r"https?://[\S]+\.git|https?://github\.com/[\S]+", desc
                            )
                        ),
                        "depth": 1,
                    }),
                    "git_diff": ("git_diff", lambda desc: {
                        "cwd": next(iter(__import__("re").findall(
                            r"[./][\w./\-]+|\b[\w\-]+/[\w./\-]+", desc
                        )), "."),
                        "staged": bool(__import__("re").search(
                            r"\b(staged|cached|index)\b", desc, __import__("re").IGNORECASE
                        )),
                    }),
                    "get_image": ("get_image", lambda desc: {
                        "prompt": desc.strip()[:500],
                        "width": 512,
                        "height": 512,
                    }),
                    "create_project": ("create_project", lambda desc: {
                        "project_type": (lambda m: m.group(1) if m else "generic")(
                            __import__("re").search(
                                r"\b(react|vue|angular|python|node|fastapi|express|nextjs|flask|django)\b",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "project_name": (lambda m: m.group(1) if m else "my-project")(
                            __import__("re").search(
                                r"(?:chiama(?:to)?|nome|project|progetto)[:\s]+['\"\s]*([\w-]+)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "description": desc.strip()[:200],
                        "path": ".",
                    }),
                    "recall": ("recall", lambda desc: {
                        "query": desc.strip()[:200],
                        "limit": 5,
                    }),
                    "list_files": ("list_files", lambda desc: {
                        "path": (__import__("re").search(r"[./\\][\w./\\]+", desc) or type("m",(),({"group":lambda s,n:n and "."}))()  ).group(0) if __import__("re").search(r"[./\\][\w./\\]+", desc) else ".",
                        "recursive": bool(__import__("re").search(r"\b(ricorsiv|recursive|all|tutto|tutta|tutti)\b", desc, __import__("re").IGNORECASE)),
                        "max_items": 100,
                    }),
                    "diff_text": ("diff_text", lambda desc: {
                        "text_a": "",
                        "text_b": desc.strip()[:2000],
                        "context_lines": 3,
                    }),
                    "validate_json": ("validate_json", lambda desc: {
                        "json_str": desc.strip()[:8000],
                        "schema": None,
                    }),
                    "lint_code": ("lint_code", lambda desc: {
                        "content": desc.strip()[:8000],
                        "language": "auto",
                        "path": (lambda m: m.group(1) if m else "")(
                            __import__("re").search(
                                r"(?:file|path|percorso)[:\s]+['\"\s]*(\S+\.\w+)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                    }),
                    "git_push": ("git_push", lambda desc: {
                        "remote": (lambda m: m.group(1).strip() if m else "origin")(
                            __import__("re").search(
                                r"(?:remote|origin|push\s+to)[:\s]+([\w\-]+)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "branch": (lambda m: m.group(1).strip() if m else "")(
                            __import__("re").search(
                                r"(?:branch|ramo|sul\s+branch)[:\s]+([\w\-\/]+)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "cwd": ".",
                    }),
                    "git_commit": ("git_commit", lambda desc: {
                        "message": (lambda m: m.group(1).strip() if m else desc.strip()[:80])(
                            __import__("re").search(
                                r"(?:messaggio|message|msg|commit\s+message)[:\s]+[']*(.{3,120}?)[']*(?:\.|$)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "cwd": ".",
                        "push": bool(__import__("re").search(
                            r"\b(push|pubblica|invia)\b", desc, __import__("re").IGNORECASE
                        )),
                    }),
                    "npm_install": ("npm_install", lambda desc: {
                        "cwd": next(iter(__import__("re").findall(
                            r"[./][\w./\-]+|\b[\w\-]+/[\w./\-]+", desc
                        )), "."),
                        "manager": "auto",
                    }),
                    "npm_run": ("npm_run", lambda desc: {
                        "script": (lambda m: m.group(1).strip() if m else "dev")(
                            __import__("re").search(
                                r"(?:npm\s+run|pnpm\s+run|yarn\s+run|run\s+script)[:\s]+([\w:_\-]+)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "cwd": next(iter(__import__("re").findall(
                            r"[./][\w./\-]+|\b[\w\-]+/[\w./\-]+", desc
                        )), "."),
                        "manager": "auto",
                    }),
                    "pip_install": ("pip_install", lambda desc: {
                        "packages": (lambda m: m.group(1).strip() if m else desc.strip()[:200])(
                            __import__("re").search(
                                r"(?:pip\s+install|pip3\s+install|installa\s+(?:il\s+)?pacchett[oi])[:\s]+([\w\s,>=<!=.\[\]]+)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                    }),
                    "type_check": ("type_check", lambda desc: {
                        "path": next(iter(__import__("re").findall(
                            r"[./][\w./\-]+|\b[\w\-]+/[\w./\-]+", desc
                        )), "."),
                        "checker": "auto",
                        "strict": bool(__import__("re").search(
                            r"\b(strict|rigoroso|--strict)\b", desc, __import__("re").IGNORECASE
                        )),
                    }),
                    # S766: 5 tool in TOOL_REGISTRY ma assenti da _TOOL_MAP — subtask erano silenziosamente saltati
                    "get_weather": ("get_weather", lambda desc: {
                        "city": (lambda m: m.group(1).strip() if m else "Milano")(
                            __import__("re").search(
                                r"(?:^|\b)(?:a|in|per|at|for|city[:\s]+|citta[:\s]+)\s+([\w\s]{2,30}?)(?:\s*\?|$|,|\bdomani\b|\boggi\b)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                    }),
                    "get_news": ("get_news", lambda desc: {
                        "query": (lambda m: m.group(1).strip() if m else desc.strip()[:120])(
                            __import__("re").search(
                                r"(?:notizie|news|ultime\s+notizie|notiz[ie]+\s+su|news\s+about|headlines)\s+(?:su\s+|di\s+|about\s+)?(.{3,120}?)(?:\?|$|\.|,)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "max_results": 5,
                    }),
                    # Browser tools — usati dal planner per navigazione/interazione web
                    "browser_navigate": ("browser_navigate", lambda desc: {
                        "url": (lambda m: m.group(0) if m else "")(
                            __import__("re").search(r"https?://[\S]+", desc)
                        ),
                    }),
                    "browser_session_open": ("browser_session_open", lambda desc: {
                        "url": (lambda m: m.group(0) if m else "")(
                            __import__("re").search(r"https?://[\S]+", desc)
                        ),
                    }),
                    "browser_session_act": ("browser_session_act", lambda desc: {
                        "action": desc.strip()[:300],
                        "session_id": "",
                    }),
                    # GAP-B: scaffold_project — genera boilerplate istantaneo
                    "scaffold_project": ("scaffold_project", lambda desc: {
                        "framework": (lambda m: m.group(1).strip().lower() if m else "react")(
                            __import__("re").search(
                                r"\b(react|next\.?js|nextjs|fastapi|flask|django|express|vue|svelte)\b",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "project_name": (lambda m: m.group(1).strip() if m else "my-project")(
                            __import__("re").search(
                                r"(?:progetto|project|app|chiamato|named|nome)[:\s]+['\"\s]*(\w[\w\-]{0,28})",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "target_dir": "/tmp",
                    }),
                    "create_chart": ("create_chart", lambda desc: {
                        "chart_type": (lambda m: m.group(1).lower() if m else "bar")(
                            __import__("re").search(
                                r"\b(bar|line|pie|scatter|barre|linee|torta|dispersione)\b",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "title": (lambda m: m.group(1).strip() if m else "")(
                            __import__("re").search(
                                r"(?:titolo|title|chiamato|intitolato)[:\s]+['\"\s]*([^'\"\n]{2,80}?)(?:['\"\n]|$)",
                                desc, __import__("re").IGNORECASE,
                            )
                        ),
                        "data": None,
                        "labels": [],
                        "values": [],
                    }),
                    # GAP-1: Delega Dinamica In-Loop
                    # delegate_task → micro-agente specializzato con accesso ai tool reali
                    # Disabilitato se già dentro un micro-agente (_is_delegate_child) per anti-ricorsione
                    "delegate_task": (
                        (None, None) if getattr(self, '_is_delegate_child', False)
                        else ("__delegate__", lambda desc: {"goal": desc})
                    ),
                    "memory":          (None, None),       # gestito dalla memoria, non un tool
                    "direct_response": (None, None),       # risposta LLM diretta, non un tool
                    "browser":         (None, None),       # browser tool non disponibile su HF
                }
                exec_done: list[str] = []   # S629: subtask completati con successo
                exec_warn: list[str] = []   # S628: subtask high-risk non eseguiti
                _cog5_last_check: int = 0   # COG-5: indice step dell'ultimo drift check
                # S627: tool read-only sicuri — eseguiti anche con risk=high
                # S662: set safe-exec — tool read-only eseguibili anche con risk=high (no side-effect).
                # S676: esteso con list_files (VFS read-only), validate_json/diff_text (computazione locale).
                # S764: aggiunti tool read-only S763
                _SAFE_EXEC_TOOLS = {"web_search", "read_page", "web_research", "read_file", "recall",
                                    "list_files", "validate_json", "diff_text",
                                    "directory_tree", "file_search", "git_status", "git_diff", "type_check"}
                # S629: fase 1 — categorizza subtask (warning vs eseguibili)

                # S634: regex per routing validator — compilati una volta per il batch
                _S634_URL_RE   = re.compile(r"https?://", re.IGNORECASE)
                _S634_CODE_HINT = re.compile(
                    r"(scrivi|genera|crea|costruisci|implementa|calcola|esegui"
                    r"|python|script|codice|funzione|classe|loop|if |for |while "
                    r"|def |return |import |print)",
                    re.IGNORECASE,
                )

                def _check_subtask_routing(s_tool: str, s_desc: str) -> str | None:
                    """S634: analisi statica — rileva mismatch tool/description PRIMA
                    che _resolve_inp invochi il CODER LLM. Non blocca mai l'esecuzione.

                    Casi rilevati:
                    - run_python/execute_sql/database_query con URL → probabile 'read_page'
                    - read_page senza URL → il tool fallirà (attende un URL valido)
                    - code tool con description <8 chars → _resolve_inp avrà poco contesto
                    """
                    if not s_desc:
                        return None
                    _is_code_tool = s_tool in ("run_python", "execute_sql", "database_query")
                    _has_url      = bool(_S634_URL_RE.search(s_desc))
                    _has_code_hint = bool(_S634_CODE_HINT.search(s_desc))
                    _is_short     = len(s_desc.strip()) < 8

                    if _is_code_tool and _has_url and not _has_code_hint:
                        return (f"[S634 routing] '{s_tool}' con URL senza hint codice "
                                f"→ potrebbe essere 'read_page' (desc: '{s_desc[:60]}')")
                    if s_tool == "read_page" and not _has_url:
                        return (f"[S634 routing] 'read_page' senza URL "
                                f"→ il tool si aspetta un URL valido (desc: '{s_desc[:60]}')")
                    if _is_code_tool and _is_short:
                        return (f"[S634 routing] '{s_tool}' con descrizione <8 chars "
                                f"→ _resolve_inp avrà contesto insufficiente (desc: '{s_desc}')")
                    return None

                _pending_exec: list[tuple[dict, str, Any]] = []
                for _s_idx, subtask in enumerate(plan.get("subtasks", []), start=1):
                    # S643: fallback id quando planner omette campo — evita None nei log
                    if "id" not in subtask or subtask["id"] is None:
                        subtask = {**subtask, "id": f"s{_s_idx}"}
                    _s_risk = subtask.get("risk", "low")
                    _s_tool = subtask.get("tool", "")
                    _s_desc_raw = subtask.get("description", "")

                    # S634: static routing check — warning in exec_warn + logger, mai bloccante
                    _rt_warn = _check_subtask_routing(_s_tool, _s_desc_raw)
                    if _rt_warn:
                        _logger.warning("S634 %s", _rt_warn)
                        exec_warn.append(f"⚠ {_rt_warn}")

                    if _s_risk == "high" and _s_tool not in _SAFE_EXEC_TOOLS:
                        # S627: alto rischio + tool destructive → inietta nota nel contesto
                        exec_warn.append(
                            f"\u26a0 subtask #{subtask.get('id')} "
                            f"'{subtask.get('description','')[:60]}' [{_s_tool}] \u2014 richiede approvazione"
                        )
                        if on_step:
                            await _maybe_await(on_step({
                                "loop": 0, "action": "plan", "status": "warning",
                                "title": "Subtask ad alto rischio",
                                "explanation": f"'{subtask.get('description','')[:60]}' \u2014 richiede approvazione",
                                "subtask_id": subtask.get("id"), "visibility": "progress",
                            }))
                        continue
                    tool_key_pair = _TOOL_MAP.get(_s_tool, (None, None))
                    reg_name, inp_builder = tool_key_pair
                    if reg_name and inp_builder is not None:
                        _pending_exec.append((subtask, reg_name, inp_builder))
                    elif _s_tool:
                        # COG-4: tool non in _TOOL_MAP — tenta generazione dinamica
                        try:
                            from agents.tool_generator import needs_dynamic_tool, generate_and_register
                            if needs_dynamic_tool(_s_tool, _s_desc_raw):
                                _dyn_ok, _dyn_rn = await asyncio.wait_for(
                                    generate_and_register(_s_desc_raw, _s_tool, self.llm, self.executor),
                                    timeout=25.0,
                                )
                                if _dyn_ok and _dyn_rn:
                                    # tool_fn() non ha argomenti — inp_builder ritorna sempre {}
                                    _dyn_ib = lambda _d: {}
                                    _pending_exec.append((subtask, _dyn_rn, _dyn_ib))
                                    _logger.info(
                                        "COG-4 tool generato dinamicamente: %s per subtask #%s",
                                        _dyn_rn, subtask.get("id"),
                                    )
                                else:
                                    exec_warn.append(
                                        f"⚠ [COG-4] tool '{_s_tool}' non in TOOL_MAP, "
                                        f"generazione dinamica fallita"
                                    )
                        except Exception as _cog4_err:
                            _logger.warning("COG-4 tool_generator error: %s", str(_cog4_err)[:120])
                            exec_warn.append(
                                f"⚠ [COG-4] tool '{_s_tool}' non disponibile "
                                f"(tool_generator error: {str(_cog4_err)[:60]})"
                            )
                # S629: fase 2 — parallel dispatch con asyncio.gather
                # Provider diversi per tool diversi → rate limit indipendenti, nessun bottleneck
                # (web_search/read_page → HTTP provider; run_python → sandbox; generate_image → HF)
                # asyncio è single-thread: list.append e state.steps sono race-condition safe

                # S632: tool che richiedono codice reale — la descrizione NL non è eseguibile diretta
                _CODE_TOOLS: set[str] = {"run_python", "execute_sql", "database_query"}

                # S744: research tools → RESEARCHER (Gemini) formula query strutturata
                _RESEARCH_TOOLS: set[str] = {"web_research", "web_search"}

                async def _resolve_inp(tool_name: str, desc: str) -> str:
                    """S632/S744: converte descrizione NL → input ottimale per il tool.
                
                    S632 (Groq/CODER):       run_python/execute_sql/database_query → codice eseguibile
                    S744 (Gemini/RESEARCHER): web_research/web_search → query strutturata
                    Tutti gli altri: passthrough diretto.
                
                    Timeout conservativo + fallback grezza — zero regressioni.
                    I/O parallelo via asyncio.gather: nessun overhead sequenziale aggiunto."""
                    if tool_name in _CODE_TOOLS:
                        # S632: CODER path — Groq genera codice/SQL eseguibile (invariante)
                        try:
                            from models.role_router import RoleRouter, Role
                            _coder_client = RoleRouter.get_client(Role.CODER)
                            if tool_name == "run_python":
                                _sys = "Sei un esperto Python. Scrivi solo il codice Python, nessuna spiegazione."
                                _usr = f"Scrivi codice Python eseguibile per: {desc}"
                            else:  # execute_sql / database_query
                                _sys = "Sei un esperto SQL. Scrivi solo la query SQL, nessuna spiegazione."
                                _usr = f"Scrivi una query SQL per: {desc}"
                            _resolved = await asyncio.wait_for(
                                _coder_client.chat(
                                    [{"role": "system", "content": _sys},
                                     {"role": "user",   "content": _usr}],
                                    temperature=0.1, max_tokens=512,
                                ),
                                timeout=10.0,
                            )
                            # Rimuovi markdown fence se il modello ha aggiunto ``` code block ```
                            _resolved = _resolved.strip()
                            if _resolved.startswith("```"):
                                _lines_r = _resolved.splitlines()
                                _resolved = "\n".join(
                                    l for l in _lines_r
                                    if not l.strip().startswith("```")
                                ).strip()
                            return _resolved if _resolved else desc
                        except Exception:
                            return desc  # fallback: descrizione grezza (comportamento pre-S632)

                    elif tool_name in _RESEARCH_TOOLS:
                        # S744: RESEARCHER path — Gemini formula query strutturata per ricerca
                        # Vantaggio: query più precise → risultati meno rumorosi
                        # Timeout 8s (< code tools 10s) — query corta, Gemini è veloce
                        try:
                            from models.role_router import RoleRouter, Role
                            _researcher = RoleRouter.get_client(Role.RESEARCHER)
                            if tool_name == "web_research":
                                _sys = (
                                    "Sei un esperto di ricerca. Dato un obiettivo, formula un "
                                    "topic di ricerca preciso e strutturato (max 200 chars). "
                                    "Risposta: solo il topic ottimizzato, nessuna spiegazione."
                                )
                                _usr = f"Obiettivo di ricerca: {desc}"
                            else:  # web_search
                                _sys = (
                                    "Sei un esperto di ricerca. Formula la query di ricerca web "
                                    "ottimale per il seguente obiettivo (max 100 chars). "
                                    "Solo la query, nessuna spiegazione."
                                )
                                _usr = f"Obiettivo: {desc}"
                            _resolved = await asyncio.wait_for(
                                _researcher.chat(
                                    [{"role": "system", "content": _sys},
                                     {"role": "user",   "content": _usr}],
                                    temperature=0.1, max_tokens=256,
                                ),
                                timeout=8.0,
                            )
                            _resolved = _resolved.strip()
                            # Sanity: accetta solo se la query ha senso (>= 8 chars)
                            if _resolved and len(_resolved) >= 8:
                                _logger.debug(
                                    "S744 RESEARCHER query [%s]: '%s' → '%s'",
                                    tool_name, desc[:60], _resolved[:80],
                                )
                                return _resolved
                        except Exception:
                            pass  # fallback: descrizione grezza (comportamento pre-S744)

                    return desc  # passthrough per tutti gli altri tool

                # S646: guard piano vuoto — plan non None ma subtasks=[] → warning degrado graceful
                # Senza guard: exec_done=[], exec_warn=[] → nessun exec_block → LLM risponde senza contesto
                if plan is not None and not plan.get("subtasks"):
                    _plan_goal_empty = plan.get("goal", state.goal)[:120]
                    exec_warn.append(
                        f"⚠ [S646] Piano generato senza subtask per: '{_plan_goal_empty}'. "
                        f"Nessuna azione eseguita — risposta basata solo su ragionamento LLM."
                    )

                if _pending_exec:
                    async def _run_subtask(
                        st: dict, rn: str, ib: Any, _goal: str = state.goal
                    ) -> tuple[dict, str, dict]:
                        if on_step:
                            # GAP-A: arricchisce started event con reason e description
                            await _maybe_await(on_step({
                                "loop": 0, "action": f"executor:{rn}",
                                "status": "started", "subtask_id": st.get("id"),
                                "reason": self._TOOL_NARRATION.get(rn, self._TOOL_NARRATION_DEFAULT),
                                "description": str(st.get("description", ""))[:80],
                            }))
                        # scaffold_project live preview: mostra albero file PRIMA dell'esecuzione
                        # Zero latency: O(1) dict lookup — utente vede struttura prima che il tool scriva
                        if rn == "scaffold_project" and on_step:
                            _desc_scaf = str(st.get("description", "react")).lower()
                            _fw_scaf   = next(
                                (k for k in self._SCAFFOLD_FILE_TREE if k in _desc_scaf),
                                "react",
                            )
                            _tree_files = self._SCAFFOLD_FILE_TREE.get(_fw_scaf, [])
                            if _tree_files:
                                _n = len(_tree_files)
                                _tree_lines = "\n".join(
                                    f"  {chr(0x251C) + chr(0x2500) if i < _n - 1 else chr(0x2514) + chr(0x2500)} {f}"
                                    for i, f in enumerate(_tree_files)
                                )
                                await _maybe_await(on_step({
                                    "action": "text_chunk",
                                    "token":  (
                                        f"_Scaffold **{_fw_scaf}** \u2014 struttura che verr\u00e0 creata:_\n"
                                        f"```\nmy-project/\n{_tree_lines}\n```\n\n"
                                    ),
                                    "status": "streaming",
                                }))
                        # S632: risolvi description → codice/SQL prima di chiamare il tool
                        _raw_desc = st.get("description", _goal)
                        # S-ORCH-8GAP FIX-DAG-3: inietta output delle dipendenze come contesto
                        # Quando B richiede A, B vede l'output reale di A → _resolve_inp più preciso.
                        # Max 300 chars per parent (contesto senza context-window explosion).
                        _parent_ctx_parts = [
                            f"[Output subtask #{_rid}]: {_subtask_outputs.get(str(_rid), '')[:300]}"
                            for _rid in st.get("requires", [])
                            if str(_rid) in _subtask_outputs
                        ]
                        if _parent_ctx_parts:
                            _raw_desc = (
                                "\n".join(_parent_ctx_parts)
                                + "\n\nTask corrente: " + _raw_desc
                            )
                        _inp_desc = await _resolve_inp(rn, _raw_desc)
                        # F4: pre-warning per tool lenti (>30s) — imposta aspettative prima dell'attesa
                        # List statica: no overhead runtime, aggiorna se aggiungi nuovi tool lenti
                        if rn in {"npm_install","npm_run","pip_install","git_clone","git_push","execute_shell","type_check","write_file","apply_patch"} and on_step:
                            _f16_secs = "20–30" if rn in {"write_file","apply_patch"} else "30–60"
                            await _maybe_await(on_step({
                                "action": "text_chunk",
                                "token":  f"_⏳ {self._TOOL_NARRATION.get(rn, rn)} — può richiedere {_f16_secs} secondi…_\n",
                                "status": "streaming",
                            }))
                        # F5: timeout tool-specifico — override il default 30s dell'executor
                        # _npm_install/_git_clone hanno wait_for interno 120s che veniva cancellato a 30s
                        _TOOL_EXEC_TIMEOUT: dict[str, float] = {
                            "npm_install": 135.0, "npm_run":     135.0,
                            "pip_install": 135.0, "git_clone":   135.0,
                            "git_push":     70.0, "execute_shell": 105.0,
                            "type_check":   75.0, "web_research":  60.0,
                        }
                        _exec_timeout = _TOOL_EXEC_TIMEOUT.get(rn, 30.0)
                        # GAP-1: Delega Dinamica In-Loop — intercetta __delegate__ prima del routing
                        # Lancia micro-agente specializzato; anti-ricorsione via _is_delegate_child.
                        # early-return: non esegue write_file/executor path per tool delegati.
                        if rn == "__delegate__" and not getattr(self, '_is_delegate_child', False):
                            _delegate_result = {"success": False, "output": "", "error": "init"}
                            try:
                                _delegate_result = await asyncio.wait_for(
                                    self._run_in_loop_delegate(st.get("description", _goal)),
                                    timeout=45.0,
                                )
                            except Exception as _de:
                                _delegate_result = {"success": False, "output": "",
                                                    "error": str(_de)[:200]}
                            return st, rn, _delegate_result
                        # F12: write_file/apply_patch — genera codice reale via CODER prima di scrivere
                        # Bug: _resolve_inp passava la descrizione NL as-is →
                        #      write_file("main.py", "Scrivi FastAPI app") scriveva testo nel file
                        # Fix: CODER genera codice da path+descrizione → contenuto corretto
                        _wf_direct_inputs: dict | None = None
                        if rn in {"write_file", "apply_patch"}:
                            try:
                                _wf_path = ib(_raw_desc).get("path", "output.txt")
                                _wf_ext  = _wf_path.rsplit(".", 1)[-1] if "." in _wf_path else ""
                                _wf_lang = {
                                    "py": "Python",   "ts": "TypeScript",  "tsx": "TypeScript React",
                                    "js": "JavaScript", "jsx": "JavaScript React",
                                    "html": "HTML",   "css": "CSS",       "sql": "SQL",
                                    "json": "JSON",   "yaml": "YAML",     "yml": "YAML",
                                    "sh": "Bash",     "md": "Markdown",   "toml": "TOML",
                                }.get(_wf_ext, "codice")
                                from models.role_router import RoleRouter as _RR_wf, Role as _Role_wf
                                _coder_wf = _RR_wf.get_client(_Role_wf.CODER)
                                if rn == "write_file":
                                    _wf_sys = (
                                        f"Sei un esperto {_wf_lang}. "
                                        f"Scrivi SOLO il contenuto completo del file {_wf_path}. "
                                        "Niente spiegazioni. Niente markdown fence. Solo il codice."
                                    )
                                    _wf_usr = f"Scrivi {_wf_path}: {_raw_desc[:1000]}"
                                else:  # apply_patch
                                    _wf_sys = (
                                        "Sei un esperto di patch unified-diff. "
                                        f"Genera SOLO la patch diff per {_wf_path}. "
                                        "Formato: --- a/file\n+++ b/file\n@@ -N,M +N,M @@"
                                    )
                                    _wf_usr = f"Patch per {_wf_path}: {_raw_desc[:1000]}"
                                _wf_generated = await asyncio.wait_for(
                                    _coder_wf.chat(
                                        [{"role": "system", "content": _wf_sys},
                                         {"role": "user",   "content": _wf_usr}],
                                        temperature=0.1, max_tokens=2000,
                                    ),
                                    timeout=20.0,
                                )
                                if _wf_generated and not _wf_generated.startswith("[LLM"):
                                    _wf_generated = _wf_generated.strip()
                                    # Strip markdown fences se il modello le ha aggiunte
                                    if _wf_generated.startswith("```"):
                                        _wf_generated = "\n".join(
                                            _wfl for _wfl in _wf_generated.splitlines()
                                            if not _wfl.strip().startswith("```")
                                        ).strip()
                                else:
                                    _wf_generated = _raw_desc  # fallback NL
                            except Exception as _wf_exc:
                                _wf_path      = ib(_raw_desc).get("path", "output.txt") if ib else "output.txt"
                                _wf_generated = _raw_desc
                                _logger.debug("F12 CODER write_file fallback: %s", _wf_exc)
                            _wf_direct_inputs = (
                                {"path": _wf_path, "content": _wf_generated} if rn == "write_file"
                                else {"path": _wf_path, "patch": _wf_generated}
                            )
                            # GAP-3: snapshot pre-write — cattura originale per rollback atomico
                            if rn == "write_file" and _wf_path not in self._write_snapshots:
                                try:
                                    _snap_r = await asyncio.wait_for(
                                        self.executor.run_tool("read_file", {"path": _wf_path}),
                                        timeout=4.0,
                                    )
                                    self._write_snapshots[_wf_path] = (
                                        _snap_r.get("output") if _snap_r.get("success") else None
                                    )
                                except Exception:
                                    self._write_snapshots[_wf_path] = None  # file non esisteva
                            # GAP-VFS: lock per-path — serializza scritture parallele sullo stesso file
                            _vfs_lock = self._get_vfs_lock(_wf_path)
                            async with _vfs_lock:
                                _r = await self.executor.run_tool(rn, _wf_direct_inputs, timeout=_exec_timeout)
                        else:
                            _r = await self.executor.run_tool(rn, ib(_inp_desc), timeout=_exec_timeout)
                        # GAP-SKILL-SYNC: registra successo/fallimento tool nel session skill tracker
                        # Sincrono (GIL-safe) — aggiorna Wilson score per routing adattivo futuro
                        try:
                            from agents.skill_tracker import get_skill_tracker as _gst
                            _gst().record(self._run_task_id, rn, bool(_r.get("success")))
                        except Exception:
                            pass  # mai bloccare tool execution per tracking
                        # COG-3: TypeScript TDD — dopo write_file/apply_patch su .ts/.tsx esegue type_check
                        # Zero overhead su file non-TS (_should_test_ts guard in run_tdd_check_ts)
                        if rn in {"write_file", "apply_patch"} and _r.get("success") and _wf_direct_inputs:
                            try:
                                _cog3_path = _wf_direct_inputs.get("path", "")
                                if _cog3_path.endswith((".ts", ".tsx")):
                                    from agents.tdd_runner import run_tdd_check_ts
                                    _cog3_content = _wf_direct_inputs.get(
                                        "content", _wf_direct_inputs.get("patch", "")
                                    )
                                    _cog3_res = await asyncio.wait_for(
                                        run_tdd_check_ts(_cog3_content, _cog3_path, self.executor, on_step),
                                        timeout=22.0,
                                    )
                                    if _cog3_res.get("ran") and not _cog3_res.get("passed"):
                                        exec_warn.append(
                                            f"⚠ [COG-3] TypeScript error in {_cog3_path}: "
                                            f"{str(_cog3_res.get('output', ''))[:200]}"
                                        )
                                        _logger.info(
                                            "COG-3 type_check failed: %s — warn aggiunti", _cog3_path
                                        )
                            except Exception as _cog3_err:
                                _logger.debug("COG-3 tdd_runner error: %s", str(_cog3_err)[:80])
                        # COG-4: Python TDD — dopo run_python con codice complesso, genera micro-test e verifica
                        # Zero overhead su codice semplice (_should_test guard) o re-esecuzione TDD (anti-loop marker)
                        if rn == "run_python" and _r.get("success") and _wf_direct_inputs:
                            _cog4_code = _wf_direct_inputs.get("code", "")
                            # Anti-loop: skip se il codice è già un test TDD generato da run_tdd_check
                            if _cog4_code and "AUTO-TEST S-GAP3" not in _cog4_code:
                                try:
                                    from agents.tdd_runner import run_tdd_check
                                    _cog4_res = await asyncio.wait_for(
                                        run_tdd_check(_cog4_code, self.executor, None),
                                        timeout=32.0,
                                    )
                                    if _cog4_res.get("ran") and not _cog4_res.get("passed"):
                                        _cog4_warn = (
                                            f"⚠ [COG-4] Python TDD failed: "
                                            f"{str(_cog4_res.get('output', ''))[:300]}"
                                        )
                                        exec_warn.append(_cog4_warn)
                                        self._tdd_fail_inject = _cog4_warn
                                        _logger.info(
                                            "COG-4 Python TDD failed — warn + inject set (%d chars)",
                                            len(_cog4_warn),
                                        )
                                except Exception as _cog4_err:
                                    _logger.debug("COG-4 tdd_runner error: %s", str(_cog4_err)[:80])
                        # S635: retry una volta su fallimento non-timeout con back-off 0.5s
                        # Motivo: errori transitori (rate limit provider, cold-start sandbox)
                        # si auto-risolvono al secondo tentativo nella maggior parte dei casi.
                        # Mai retrya su TimeoutError — il tool è già lento, un secondo tentativo
                        # aggraverebbe la latenza. Il flag _s635_retry evita loop infiniti.
                        if not _r.get("success") and not _r.get("_s635_retry"):
                            _err_str = str(_r.get("error", "")).lower()
                            _is_timeout = "timeout" in _err_str or "timed out" in _err_str
                            if not _is_timeout:
                                await asyncio.sleep(0.5)
                                # S635+UI: retry visibile — utente capisce il ritardo
                                if on_step:
                                    await _maybe_await(on_step({
                                        "action": "text_chunk",
                                        "token":  f"_🔄 Errore transitorio ({rn}), riprovo…_\n",
                                        "status": "streaming",
                                    }))
                                _inp2 = await _resolve_inp(rn, _raw_desc)
                                # F12: retry usa direct inputs per write_file (evita NL fallback)
                                _retry_inp = _wf_direct_inputs if _wf_direct_inputs is not None else ib(_inp2)
                                _r2 = await self.executor.run_tool(rn, _retry_inp, timeout=_exec_timeout)
                                _r2["_s635_retry"] = True  # marca per evitare loop
                                _logger.warning(
                                    "S635 retry subtask #%s [%s]: %s → %s",
                                    st.get("id"), rn,
                                    "ok" if _r2.get("success") else "ancora fallito",
                                    str(_r2.get("error", ""))[:80],
                                )
                                _r = _r2
                        # GAP-1: emetti file_written per VFS sync frontend — dopo write riuscito
                        if rn == "write_file" and _r.get("success") and _wf_direct_inputs and on_step:
                            await _maybe_await(on_step({
                                "action":  "file_written",
                                "path":    _wf_direct_inputs.get("path", ""),
                                "content": _wf_direct_inputs.get("content", ""),
                            }))
                        # GAP-9: se scaffold fallisce emetti warning — evita preview albero orfano
                        # Il live-preview dell'albero e gia stato emesso PRE-esecuzione
                        if rn == "scaffold_project" and not _r.get("success") and on_step:
                            await _maybe_await(on_step({
                                "action": "text_chunk",
                                "token":  "\n_\u26a0 Scaffold non completato \u2014 riprovo con approccio alternativo..._\n",
                                "status": "streaming",
                            }))
                        # COG-3: type_check post-scaffold — verifica TS sull'intero progetto
                        # scaffold_project crea molti .ts/.tsx senza passare per write_file
                        if rn == "scaffold_project" and _r.get("success"):
                            try:
                                _scaf_out  = _r.get("output", {})
                                _scaf_path = (
                                    _scaf_out.get("path") if isinstance(_scaf_out, dict)
                                    else ib(_raw_desc).get("path", ".") if ib else "."
                                )
                                _scaf_path = _scaf_path or "."
                                from agents.tdd_runner import run_tdd_check_ts
                                _SCAF_TS_STUB = (
                                    "import React from 'react';\n"
                                    "import { useState } from 'react';\n"
                                    "const App: React.FC = () => null;\n"
                                    "export type AppProps = Record<string, unknown>;\n"
                                    "export default App;\n"
                                )
                                _scaf_res = await asyncio.wait_for(
                                    run_tdd_check_ts(
                                        _SCAF_TS_STUB,
                                        f"{_scaf_path}/src/App.tsx",
                                        self.executor,
                                        on_step,
                                    ),
                                    timeout=25.0,
                                )
                                if _scaf_res.get("ran") and not _scaf_res.get("passed"):
                                    exec_warn.append(
                                        f"\u26a0 [COG-3] TypeScript errors nel progetto scaffoldato "
                                        f"'{_scaf_path}': {str(_scaf_res.get('output', ''))[:200]}"
                                    )
                                    _logger.info("COG-3 scaffold type_check failed: %s", _scaf_path)
                            except Exception as _cog3_scaf:
                                _logger.debug("COG-3 scaffold type_check: %s", str(_cog3_scaf)[:80])
                        return st, rn, _r
                    # GAP-A: narrazione strategia pre-gather — text_chunk visibile in chat
                    # Sintetizza i tool in 1-2 frasi prima di avviare l'esecuzione parallela.
                    # Mostra max 2 tool per non sovraccaricare; usa _TOOL_NARRATION lookup O(1).
                    if on_step and _pending_exec:
                        _narr_tools = [rn for _, rn, _ in _pending_exec]
                        _narr_parts = [
                            self._TOOL_NARRATION.get(t, "") for t in _narr_tools[:2]
                        ]
                        _narr_str = " · ".join(p for p in _narr_parts if p)
                        if _narr_str:
                            await _maybe_await(on_step({
                                "action": "text_chunk",
                                "token":  f"_{_narr_str}…_\n\n",
                                "status": "streaming",
                            }))

                    # F11+S639+F8: esecuzione a FASI con topological sort — rispetta "requires"
                    # Bug: gather flat → npm_run partiva prima che npm_install finisse (requires ignorato).
                    # Fix: fase 0 = subtask senza deps, fase 1 = subtask che dipendono dalla fase 0, etc.
                    # Ogni fase usa gather adattivo (150s se slow tool, 90s altrimenti).
                    # Invariante: max 8 fasi per prevenire loop infiniti su piani malformati.
                    _SLOW_GATHER_TOOLS = {"npm_install","npm_run","pip_install","git_clone","git_push","execute_shell"}
                    _completed_subtask_ids: set[str] = set()
                    # S-ORCH-8GAP FIX-DAG-1: cascade-skip su deps fallite
                    _failed_subtask_ids:  set[str] = set()
                    # S-ORCH-8GAP FIX-DAG-3: output injection per subtask dipendenti
                    _subtask_outputs:     dict[str, str] = {}
                    _phase_remaining     = list(_pending_exec)

                    for _phase_n in range(8):
                        if not _phase_remaining:
                            break

                        # Partiziona: pronti (deps soddisfatte) vs bloccati
                        _phase_ready:   list[tuple] = []
                        _phase_blocked: list[tuple] = []
                        for _ps, _prn, _pib in _phase_remaining:
                            _reqs = {str(r) for r in _ps.get("requires", [])}
                            # S-ORCH-8GAP FIX-DAG-1: cascade-skip se una dep è fallita
                            # Senza questo, il deadlock guard avrebbe eseguito il subtask
                            # senza l'output della sua dipendenza → tool call sprecata.
                            _failed_deps = _reqs & _failed_subtask_ids
                            if _failed_deps:
                                _dep_ids_str = ", ".join(sorted(_failed_deps))
                                exec_warn.append(
                                    f"\u26a0 [DAG] subtask #{_ps.get('id')} saltato — "
                                    f"dipendenza fallita: {_dep_ids_str}"
                                )
                                _failed_subtask_ids.add(str(_ps.get("id")))  # propaga cascade
                                _logger.info(
                                    "DAG cascade-skip subtask #%s (failed deps: %s)",
                                    _ps.get("id"), _dep_ids_str,
                                )
                            elif _reqs.issubset(_completed_subtask_ids):
                                _phase_ready.append((_ps, _prn, _pib))
                            else:
                                _phase_blocked.append((_ps, _prn, _pib))

                        # Deadlock guard — esegui i rimanenti comunque (plan malformato)
                        if not _phase_ready:
                            _phase_ready   = _phase_remaining
                            _phase_blocked = []
                            _logger.warning(
                                "F11 fase %d deadlock — eseguo %d subtask bloccati",
                                _phase_n, len(_phase_ready),
                            )

                        _has_slow_in_phase = any(
                            _prn in _SLOW_GATHER_TOOLS for _, _prn, _ in _phase_ready
                        )
                        _gather_timeout = 150.0 if _has_slow_in_phase else 90.0

                        if _phase_n > 0:
                            _logger.info(
                                "F11 fase %d — %d subtask pronti (timeout %.0fs)",
                                _phase_n, len(_phase_ready), _gather_timeout,
                            )
                            # F15: narrazione per fasi 1+ — mostra cosa sta per eseguire
                            # Fase 0 ha già narrazione da GAP-A (pre-gather); fasi successive erano silenziose.
                            if on_step and _phase_ready:
                                _ph_narr_parts = [
                                    self._TOOL_NARRATION.get(_prn, "")
                                    for _, _prn, _ in _phase_ready[:2]
                                ]
                                _ph_narr_str = " · ".join(p for p in _ph_narr_parts if p)
                                if _ph_narr_str:
                                    await _maybe_await(on_step({
                                        "action": "text_chunk",
                                        "token":  f"_{_ph_narr_str}…_\n",
                                        "status": "streaming",
                                    }))

                        # S-ORCH-8GAP FIX-DAG-2: Semaphore(3) per fase — max 3 subtask
                        # simultanei per non saturare TCP su iPhone (max 6 conn totali).
                        # asyncio single-thread: il semaforo è local-safe, zero race condition.
                        _phase_sem = asyncio.Semaphore(3)

                        async def _sem_subtask(s, rn, ib, _psem=_phase_sem):
                            async with _psem:
                                return await _run_subtask(s, rn, ib)

                        try:
                            _exec_results = await asyncio.wait_for(
                                asyncio.gather(
                                    *[_sem_subtask(s, rn, ib) for s, rn, ib in _phase_ready],
                                    return_exceptions=True,
                                ),
                                timeout=_gather_timeout,
                            )
                        except asyncio.TimeoutError:
                            _logger.warning(
                                "S639 gather timeout (%.0fs) fase %d su %d subtask",
                                _gather_timeout, _phase_n, len(_phase_ready),
                            )
                            exec_warn.append(
                                f"\u26a0 [S639] timeout globale executor fase {_phase_n} "
                                f"({len(_phase_ready)} subtask): nessun risultato disponibile"
                            )
                            _exec_results = []

                        for _er in _exec_results:
                            if isinstance(_er, Exception):
                                # S636: eccezioni da asyncio.gather erano silenziosamente ignorate.
                                _exc_type = type(_er).__name__
                                _exc_msg  = str(_er)[:120]
                                _logger.error(
                                    "S636 gather exception [%s]: %s", _exc_type, _exc_msg
                                )
                                exec_warn.append(
                                    f"\u26a0 [S636] eccezione subtask [{_exc_type}]: {_exc_msg}"
                                )
                                continue
                            _st, _rn, _res = _er
                            if _res.get("success"):
                                _completed_subtask_ids.add(str(_st.get("id")))
                                # S-ORCH-8GAP FIX-DAG-3: memorizza output per injection dipendenti
                                # F20: dict output → JSON (standard) invece di Python repr
                                # F21: scaffold/write_file → summary human-readable
                                _out_raw = _res.get("output", "")
                                if isinstance(_out_raw, dict):
                                    # F21: output speciale per tool che producono file
                                    _fw = _out_raw.get("framework")
                                    _files = _out_raw.get("files_created", [])
                                    _dir   = _out_raw.get("directory", "")
                                    _path  = _out_raw.get("path", "")
                                    _size  = _out_raw.get("size")
                                    if _fw and _files:
                                        # scaffold_project: summary concisa
                                        _flist = ", ".join(str(f) for f in _files[:6])
                                        _fmore = f" (+{len(_files)-6} altri)" if len(_files) > 6 else ""
                                        _snippet = (
                                            f"Progetto {_fw} creato in {_dir} — "
                                            f"{len(_files)} file: {_flist}{_fmore}"
                                        )
                                    elif _path and _size is not None:
                                        # write_file: conferma creazione file
                                        _snippet = f"File scritto: {_path} ({_size} bytes)"
                                    else:
                                        try:
                                            import json as _jmod, re as _re_jmod
                                            _snippet = _jmod.dumps(_re_jmod.sub(r'[\ud800-\udfff]', '', str(_out_raw)) if isinstance(_out_raw, str) else _out_raw, ensure_ascii=False)[:500]
                                        except Exception:
                                            _snippet = str(_out_raw).strip()[:500]
                                else:
                                    _snippet = str(_out_raw).strip()[:500]
                                # S647: hollow success — tool ok ma output vuoto → nota esplicita
                                if not _snippet:
                                    _snippet = "(nessun output — operazione completata senza testo di risposta)"
                                _rtag     = " \u26a0" if _st.get("risk", "low") == "high" else ""
                                _label    = f"[subtask {_st.get('id')}{_rtag} \u2014 {_st.get('description','')[:60]}]"
                                exec_done.append(f"{_label}: {_snippet}")
                                # S-ORCH-8GAP FIX-DAG-3: salva output per injection subtask dipendenti
                                _subtask_outputs[str(_st.get("id"))] = _snippet[:400]
                                state.steps.append({
                                    "action": f"executor:{_rn}",
                                    "subtask_id": _st.get("id"),
                                    "output": _snippet,
                                })
                                if on_step:
                                    await _maybe_await(on_step({
                                        "loop": 0, "action": f"executor:{_rn}",
                                        "status": "done", "subtask_id": _st.get("id"),
                                    }))
                # S628: sintesi strutturata — sezioni separate done/warn invece di stringa piatta
                            else:
                                # S637: subtask fallito → feedback UI + exec_warn
                                # S-ORCH-8GAP FIX-DAG-1: traccia id falliti per cascade-skip
                                _failed_subtask_ids.add(str(_st.get("id")))
                                _fail_err = str(_res.get("error", "errore sconosciuto"))[:100]
                                _fail_retry = _res.get("_s635_retry", False)
                                _fail_label = (
                                    f"[subtask {_st.get('id')} \u2014 {_st.get('description','')[:50]}]"
                                )
                                _fail_note = " (dopo retry S635)" if _fail_retry else ""
                                exec_warn.append(
                                    f"\u26a0 {_fail_label} fallito{_fail_note}: {_fail_err}"
                                )
                                _logger.warning(
                                    "S637 subtask #%s [%s] failed%s: %s",
                                    _st.get("id"), _rn, _fail_note, _fail_err,
                                )
                                if on_step:
                                    await _maybe_await(on_step({
                                        "loop": 0, "action": f"executor:{_rn}",
                                        "status": "failed",
                                        "subtask_id": _st.get("id"),
                                        "explanation": _fail_err,
                                        "visibility": "progress",
                                    }))

                        _phase_remaining = _phase_blocked  # prossima fase: subtask rimasti
                # COG-1: Dynamic Re-planner — rigenera piano se ci sono fallimenti reali
                _cog1_real_failures = [
                    w for w in exec_warn
                    if any(kw in w.lower() for kw in
                           ("fallito", "failed", "timeout", "exception", "error", "eccezione"))
                ]
                if _cog1_real_failures and not exec_warn == [] and not plan.get("_replanned"):
                    try:
                        from agents.dynamic_replanner import should_replan, replan
                        if should_replan(exec_warn, exec_done):
                            _logger.info(
                                "COG-1 should_replan=True (warn=%d done=%d)",
                                len(exec_warn), len(exec_done),
                            )
                            _replan_goal = plan.get("goal", state.goal)
                            _new_plan = await asyncio.wait_for(
                                replan(self.planner, _replan_goal, exec_warn, exec_done, plan=plan),  # P25-R1
                                timeout=20.0,
                            )
                            if _new_plan and _new_plan.get("subtasks"):
                                plan = _new_plan
                                exec_done.clear()
                                exec_warn.clear()
                                _logger.info(
                                    "COG-1 replan ok: %d nuovi subtask",
                                    len(plan.get("subtasks", [])),
                                )
                                _pending_exec2: list[tuple] = []
                                for _s2 in plan.get("subtasks", []):
                                    _t2 = _s2.get("tool", "")
                                    _tk2 = _TOOL_MAP.get(_t2, (None, None))
                                    _rn2, _ib2 = _tk2
                                    if _rn2 and _ib2 is not None:
                                        _pending_exec2.append((_s2, _rn2, _ib2))
                                _replan_sem = asyncio.Semaphore(3)
                                async def _replan_subtask(s, rn, ib, _sem=_replan_sem):
                                    async with _sem:
                                        return await _run_subtask(s, rn, ib)
                                try:
                                    _replan_results = await asyncio.wait_for(
                                        asyncio.gather(
                                            *[_replan_subtask(s, rn, ib) for s, rn, ib in _pending_exec2],
                                            return_exceptions=True,
                                        ),
                                        timeout=90.0,
                                    )
                                    for _rr in _replan_results:
                                        if isinstance(_rr, Exception):
                                            exec_warn.append(
                                                f"⚠ [COG-1 replan] eccezione: {str(_rr)[:80]}"
                                            )
                                            continue
                                        _rr_st, _rr_rn, _rr_res = _rr
                                        if _rr_res.get("success"):
                                            _out_r = str(_rr_res.get("output", ""))[:400]
                                            exec_done.append(
                                                f"[replan subtask {_rr_st.get('id')}]: {_out_r}"
                                            )
                                        else:
                                            exec_warn.append(
                                                f"⚠ [COG-1 replan] subtask #{_rr_st.get('id')} "
                                                f"fallito: {str(_rr_res.get('error',''))[:80]}"
                                            )
                                except asyncio.TimeoutError:
                                    exec_warn.append("⚠ [COG-1 replan] timeout 90s sul piano alternativo")
                    except Exception as _cog1_err:
                        _logger.warning("COG-1 dynamic_replanner error: %s", str(_cog1_err)[:120])
                # COG-5: Goal Drift Detector — controlla ogni DRIFT_CHECK_EVERY_N subtask completati.
                # Non-blocking: sincrono, nessun I/O. Se l'agente si è allontanato dal goal
                # originale, inietta una micro-guida correttiva in exec_warn prima del LLM call.
                try:
                    from agents.goal_drift_detector import detect_drift as _cog5_detect
                    _cog5_res = _cog5_detect(
                        goal=state.goal,
                        exec_done=exec_done,
                        step_count=len(exec_done),
                        last_check=_cog5_last_check,
                    )
                    _cog5_last_check = _cog5_res["new_last_check"]
                    if _cog5_res.get("drifted"):
                        _drift_msg = (
                            f"[COG-5 ⚠] Deriva dal goal rilevata "
                            f"({_cog5_res['reason']}). "
                            f"Goal originale: \"{state.goal[:80]}\". "
                            f"Concentra la risposta su questo obiettivo."
                        )
                        exec_warn.append(_drift_msg)
                        _logger.info("COG-5 drift iniettato in exec_warn: %s", _cog5_res["reason"])
                except Exception as _cog5_err:
                    _logger.debug("COG-5 error (non-blocking): %s", str(_cog5_err)[:80])
                # GAP-NEW-2: TDD FAIL inject — se _t_run_python() ha rilevato un test fallito,
                # inietta il traceback in exec_warn PRIMA del campionamento StrategicHealer.
                # Questo chiude il ciclo: TDD FAIL → exec_warn → healer fingerprinting → strategia alternativa.
                if getattr(self, '_tdd_fail_inject', None):
                    exec_warn.insert(0, self._tdd_fail_inject)
                    _logger.info("GAP-NEW-2: TDD fail iniettato in exec_warn (%d chars)", len(self._tdd_fail_inject))
                    self._tdd_fail_inject = None
                # GAP-4: StrategicHealer — analisi LLM pattern di fallimento (integra GAP-SELFHEAL v2)
                # GAP-RUN-NAMEERROR FIX: define exec_errors from exec_warn
                exec_errors = [w for w in exec_warn if isinstance(w, str) and w.startswith('⚠')]
                if exec_errors and getattr(self, '_strategic_healer', None):
                    try:
                        _sh_ctx_str = "\n".join(str(w) for w in exec_warn[-10:] if isinstance(w, str))
                        _sh_decision = await self._strategic_healer.analyze_and_decide(exec_errors, _sh_ctx_str)
                        if _sh_decision and getattr(_sh_decision, 'strategy_prompt', None):
                            exec_warn.insert(0, _sh_decision.strategy_prompt)
                            _logger.info("GAP-4: StrategicHealer strategy iniettata in exec_warn")
                        if _sh_decision and getattr(_sh_decision, 'should_stop', False):
                            _logger.info("GAP-4: StrategicHealer → should_stop, interruzione loop")
                            # [GAP-4-FIXSYN] break rimosso: era dentro async def _run_subtask fuori da loop
                            # GAP-4-FIX: Re-implement stop logic via state flag
                            if hasattr(state, 'should_stop'): state.should_stop = True
                            return  # Interrompe l'esecuzione del fallback corrente
                            # SyntaxError a compile-time — strategia gia iniettata in exec_warn sopra.
                    except Exception as _sh_loop_err:
                        _logger.debug("GAP-4: StrategicHealer loop silenced — %s", _sh_loop_err)
                # GAP-SELFHEAL v2: delegated to StrategicHealer
                StrategicHealer.analyze_errors(exec_errors, exec_warn)
                if exec_done or exec_warn:
                    _plan_goal = plan.get("goal", state.goal)[:120]
                    _synth: list[str] = [f"## Piano eseguito — {_plan_goal}"]
                    if exec_done:
                        _synth.append(f"\n### Risultati ({len(exec_done)} subtask completati):")
                        _synth.extend(exec_done)
                    if exec_warn:
                        # Cap display: al LLM arrivano al massimo 50 avvisi (i più recenti).
                        # exec_warn con 100+ item produce ### Attenzione di decine di KB che
                        # satura il context window; warning più vecchi già processati in iter. precedenti.
                        _WARN_DISPLAY_CAP = 50
                        _warn_omitted = max(0, len(exec_warn) - _WARN_DISPLAY_CAP)
                        _warn_display  = exec_warn[-_WARN_DISPLAY_CAP:] if _warn_omitted > 0 else exec_warn
                        _cap_note = f', mostrati ultimi {_WARN_DISPLAY_CAP}' if _warn_omitted > 0 else ''
                        _synth.append(
                            f"\n### Non eseguiti — richiedono attenzione ({len(exec_warn)} totale{_cap_note}):"
                        )
                        if _warn_omitted > 0:
                            _synth.append(
                                f'[... {_warn_omitted} avvisi precedenti omessi — '
                                f'focus sui {_WARN_DISPLAY_CAP} più recenti]'
                            )
                        _synth.extend(_warn_display)
                    # S638: sintesi totale failure — guida LLM verso risposta degrado graceful
                    # Prima: nessun avviso se exec_done=[] → LLM non capiva che TUTTO aveva fallito
                    if exec_warn and not exec_done:
                        _n_planned = len(plan.get("subtasks", []))
                        _synth.append(
                            f"\n### ⚠ Tutti i subtask ({_n_planned}) non hanno prodotto risultati. "
                            f"Rispondi in modo onesto su cosa non è stato possibile eseguire."
                        )
                    exec_block = "\n".join(_synth)
                    tool_results = (f"{tool_results}\n\n{exec_block}".strip()
                                    if tool_results else exec_block)
                    # S642: aggiorna _tool_exec_successes/_tool_exec_errors da subtask results
                    # Prima: Tool Integrity Guard riceveva solo i contatori pre-executor (tool diretti)
                    # senza sapere quanti subtask del planner erano andati a buon fine o no.
                    _tool_exec_successes += len(exec_done)
                    _tool_exec_errors    += len([w for w in exec_warn
                                                 if w.startswith("⚠") and "S640" not in w
                                                 and "S634" not in w and "S639" not in w])
                    # S638: save_episode success=True solo se almeno 1 subtask completato
                    # Prima: True hardcoded anche con 0 risultati → episodi falsi in memoria
                    _ep_success = bool(exec_done)
                    if self.memory:
                        _mem_src = "\n".join(exec_done)[:800] if exec_done else exec_warn[0][:400]
                        await self.memory.save_episode(
                            "executor", state.goal, _mem_src, _ep_success,
                            tags=["executor", "plan"])

            # S575-GAP1: ReasoningCore gate per task complessi
            # Trigger: tok_budget >= 6144 (task grandi) + piano con 3+ subtask
            # Azione: run_loop_to_answer() con max 5 iterazioni → inietta nel contesto
            # Il loop multi-step arricchisce tool_results; l'LLM finale sintetizza la risposta.
            # Timeout 55s — conservativo, mai blocca l'utente più di 1 min totale.
            _n_subtasks = len(plan.get("subtasks", [])) if plan else 0
            _should_reason = (
                self._max_tokens_for_goal(state.goal) >= 6144
                and _n_subtasks >= 3
            )
            if _should_reason:
                try:
                    from agents.reasoning_core import ReasoningCore as _RC
                    _rc = _RC(
                        llm_client=self._get_llm_for_goal(state.goal),
                        planner=self.planner,
                        critic=self.critic,
                        executor=self.executor,
                    )
                    if on_step:
                        await _maybe_await(on_step({
                            "loop": 0, "action": "reasoning_core",
                            "status": "started",
                            "title": "Analisi multi-step",
                            "explanation": f"ReasoningCore attivato — {_n_subtasks} subtask, loop fino a 5",
                        }))
                    # GAP-2: converti _session_files (path→content) in project_files per deep context
                    _rc_pf = [
                        {"path": _pf_path, "content": _pf_content, "language": _pf_path.rsplit(".", 1)[-1].lower() if "." in _pf_path else ""}
                        for _pf_path, _pf_content in (self._session_files or {}).items()
                    ] or None
                    _rc_ctx = await asyncio.wait_for(
                        _rc.run_loop_to_answer(
                            state.goal, context=state.context or "",
                            on_step=on_step, max_loops=8,  # S701: 5→8
                            project_files=_rc_pf,  # GAP-2: deep context multi-file
                        ),
                        timeout=55.0,
                    )
                    if _rc_ctx:
                        tool_results = (
                            f"{tool_results}\n\n[REASONING CORE]\n{_rc_ctx}".strip()
                            if tool_results else f"[REASONING CORE]\n{_rc_ctx}"
                        )
                        if on_step:
                            await _maybe_await(on_step({
                                "loop": 0, "action": "reasoning_core",
                                "status": "done",
                                "title": "Analisi multi-step completata ✓",
                            }))
                except asyncio.TimeoutError:
                    pass  # timeout → continua con tool_results già disponibili
                except Exception:
                    pass  # silente — non blocca il loop principale

        # RF-2: Skeleton Injection — se >=3 file in sessione, inietta skeleton compatto
        # Attiva il context_manager (S364/S752-A): firme funzioni invece di file interi.
        # Riduce token ~60% su sessioni multi-file senza perdere informazione strutturale.
        if self._session_files and len(self._session_files) >= 3:
            try:
                _gcfg = _get_context_manager()
                _cm_files = [
                    {
                        "path": _p,
                        "content": _c,
                        "language": _p.rsplit(".", 1)[-1].lower() if "." in _p else "",
                    }
                    for _p, _c in self._session_files.items()
                ]
                _skeleton_ctx = await asyncio.wait_for(
                    _gcfg(state.goal, active_files=[], all_files=_cm_files, top_k=4),
                    timeout=2.0,
                )
                if _skeleton_ctx and not _skeleton_ctx.startswith('[LLM'):
                    tool_results = (
                        f"[SKELETON PROGETTO]\n{_skeleton_ctx}\n\n{tool_results}".strip()
                        if tool_results else f"[SKELETON PROGETTO]\n{_skeleton_ctx}"
                    )
            except Exception:
                pass  # RF-2: fail-safe, mai blocca il loop principale

        # GAP-4-TOOLCOMP: comprimi tool_results se > 3000 chars
        # Evita context saturation con output grezzi di read_file/web_search.
        # Usa fast_llm (8B), timeout 4s, fail-open — mai blocca il loop.
        if tool_results and len(tool_results) > 3000:
            try:
                _tr_llm = self._get_fast_llm()
                _tr_comp = await asyncio.wait_for(
                    _tr_llm.chat([
                        {"role": "system", "content": (
                            "Riassumi i risultati tool seguenti preservando: "
                            "dati concreti (URL, numeri, path file, errori esatti, codice), "
                            "risultati critici per il goal. Elimina verbosità e ridondanza. "
                            "Max 1500 chars. Sii chirurgico."
                        )},
                        {"role": "user", "content": (
                            f"GOAL: {state.goal[:200]}\n\nTOOL RESULTS:\n{tool_results[:4000]}"
                        )},
                    ], temperature=0.1, max_tokens = 400),  # S586: 250->400
                    timeout=4.0,
                )
                if _tr_comp and not _tr_comp.startswith('[LLM') and len(_tr_comp) < len(tool_results):
                    tool_results = f"[TOOL RESULTS COMPRESSI — GAP-4]\n{_tr_comp}"
            except Exception:
                pass  # fail-open: usa tool_results originali se compressione fallisce

        # LLM call con dati tool iniettati
        # S402: passa exec counts per Tool Integrity Guard in _build_messages()
        messages = self._build_messages(
            state, tool_results=tool_results,
            tool_exec_successes=_tool_exec_successes,
            tool_exec_errors=_tool_exec_errors,
            session_files=self._session_files or None,  # S416-Fix1
        )
        # S418-F3: Role.CONTEXT — comprime storia se > 20 messaggi per prevenire context bloat
        if len(messages) > 20:
            try:
                from models.role_router import RoleRouter, Role as _Role
                _ctx_llm = RoleRouter.get_client(_Role.CONTEXT)
                _comp_input = [
                    {"role": "system", "content": (
                        "Riassumi questa conversazione in max 5 punti chiave. "
                        "Preserva dati concreti (URL, numeri, risultati tool). Sii molto conciso."
                    )},
                    *messages[1:-2],
                ]
                _summary = await asyncio.wait_for(
                    _ctx_llm.chat(_comp_input, temperature=0.1, max_tokens=512),
                    timeout=4.0,  # S423: ridotto da 10s a 4s — evita bottleneck su 429
                )
                if _summary and not _summary.startswith('[LLM'):
                    # S423-Fix8: preserva sempre l'ultimo user message — evita che la domanda
                    # corrente venga persa nella compressione quando è fuori da messages[-3:]
                    # S590: messages[-2:]→[-3:] — preserva più turns nella coda di compressione
                    _last_user = next((m for m in reversed(messages) if m.get("role") == "user"), None)
                    _tail = list(messages[-3:])
                    # S458: inserisci _last_user PRIMA della coda (user→assistant), non dopo
                    if _last_user and _last_user not in _tail:
                        _tail.insert(0, _last_user)
                    _compressed = [
                        messages[0],
                        {"role": "system", "content": f"[STORIA COMPRESSA]\n{_summary}"},
                        *_tail,
                    ]
                    messages = _compressed
            except Exception:
                pass  # compressione fallita — usa messages originali
        if on_step:
            await _maybe_await(on_step({
                "loop": 1, "action": "llm", "status": "started",
                "title": "Elaborazione AI",
                "explanation": "Sto elaborando la risposta…",
            }))

        # B10: usa state.has_files — non più '__HAS_FILES__' nel context string
        _has_files = state.has_files
        _llm_timeout = LLM_TIMEOUT * 1.8 if _has_files else LLM_TIMEOUT

        # S197 never-give-up: frasi di rifiuto che triggerano retry forzato
        # S456-X2: SET CANONICO — sincronizzato con REFUSAL_RE in outputValidator.ts.
        # Soglia: 600 chars (retry aggressivo, cheap). Frontend usa 350 (quality penalization).
        # Soglie SEPARATE per design — qualsiasi aggiunta qui deve aggiornare anche il TS.
        _REFUSAL_PHRASES = (
            # ── Italiano ──────────────────────────────────────────────────────
            'non posso', 'non sono in grado', 'mi dispiace ma non',
            'impossibile per me', 'non riesco', 'non ho accesso',
            'mi scuso ma non', 'purtroppo non posso', 'purtroppo non sono',
            'mi dispiace, non', 'non mi è possibile', 'non è possibile per me',
            'non ho trovato',       # S456-X2: da TS REFUSAL_RE
            'sono spiacente',       # S456-X2: da TS REFUSAL_RE
            'come ia non',          # S456-X2: da TS REFUSAL_RE
            # ── Inglese ───────────────────────────────────────────────────────
            'i cannot', 'i am unable', 'i\'m unable', 'i\'m sorry but i',
            'as an ai', 'as an language model', 'as a language model',
            'i\'m not able to', 'that\'s not something i can', 'sorry, i can\'t',
            'unfortunately i cannot', 'i\'m afraid i cannot',
            'i lack the capability',        # S456-X2: da TS REFUSAL_RE
            "i don't have the ability",     # S456-X2: da TS REFUSAL_RE
            "i don't have information about",  # S456-X2: da TS REFUSAL_RE
            # ── Estensioni S-REFUSAL-EXT ─────────────────────────────────
            'non so come',          # IT: mancava da _REFUSAL_PHRASES
            'non posso aiutarti',   # IT: mancava da _REFUSAL_PHRASES
            'questo va oltre',      # IT: va oltre capacità agente
            'non posso rispondere', # IT: rifiuto esplicito
            'i cannot assist',      # EN: variante i cannot
            "i'm not able",         # EN: variante i'm not able to
            'beyond my capability', # EN: limite capacità
            'not within my',        # EN: not within my capability/scope
            'i apologize but',      # EN: scuse + rifiuto
            'mi scusi ma',          # IT: scuse formali
        )

        

        # GAP-3: EscalationLadder — routing dinamico: attempt 0→CODER, 1→REASONER, 2+→DEFAULT
        # Attempt 0: CODER (Llama 4 Scout) · Attempt 1: REASONER (Cerebras 120B) · Attempt 2+: DEFAULT
        from agents.escalation_ladder import EscalationLadder as _EscLadder
        _esc_ladder = _EscLadder(base_llm=self.llm, goal=state.goal)

        # S376: error severity classifier — adatta la strategia di retry in base al tipo di errore
        # Senza questo, tutti gli errori ricevono lo stesso trattamento (temperature 0.4, stesso hint)
        # Con questo: syntax → fix preciso, runtime → retry tool, logic → ri-pianifica
        # S376/GAP-3.3: usa error_classifier.py unificato (11 categorie, regex precisi)
        # Rimussa funzione locale duplicata — mapping ErrorCategory → severity per _SEVERITY_HINTS
        _EC_TO_SEVERITY = {
            "syntax":     "syntax",
            "runtime":    "runtime", "selector": "runtime", "navigation": "runtime",
            "frame":      "runtime", "auth":     "runtime", "network":    "runtime",
            "limit":      "runtime",
            "logic":      "logic",   "db_error": "logic",
            "unknown":    "unknown",
        }
        try:
            _clf_fn, _ = _get_classifier()
            errors = state.errors  # S576: alias for comprehension
            _clf_result  = _clf_fn([str(e)[:500] for e in errors[-3:]])  # S576+S592: errors window -3
            _error_severity = _EC_TO_SEVERITY.get(_clf_result.category.value, "unknown")
        except Exception:
            _error_severity = "unknown"

        # S376: severity-based retry hints
        _SEVERITY_HINTS = {
            'syntax': (
                "ERRORE DI SINTASSI RILEVATO: correggi SOLO la sintassi — "
                "non cambiare la logica. Verifica parentesi, virgole, indentazione."
            ),
            'runtime': (
                "ERRORE RUNTIME RILEVATO: l'approccio precedente ha prodotto un errore "
                "a runtime. Prova un approccio alternativo più robusto con gestione errori."
            ),
            'logic': (
                "ERRORE LOGICO RILEVATO: il risultato ottenuto non è corretto. "
                "Ripensa la logica dall'inizio — usa un approccio diverso."
            ),
        }

        # S195-Robust + S197: retry su errore/placeholder/rifiuto
        # S385: adaptive retry budget — Q&A semplice 1 try, code 2, app multi-feature 3
        _tok_budget = self._max_tokens_for_goal(state.goal)
        _max_llm_tries = 3 if _tok_budget >= 6144 else 2 if _tok_budget >= 4096 else 1
        answer = ""
        _prev_llm_answer = ""  # S759: repeated-answer stuck detection
        for _llm_try in range(_max_llm_tries):
            _is_last = _llm_try == _max_llm_tries - 1
            # GAP-3: aggiorna il client LLM per questo tentativo (escalation dinamica)
            _active_llm = _esc_ladder.get_llm(_llm_try, _error_severity)
            try:
                _msgs = messages
                # S385-fix4: inietta force-response SOLO se ci sono stati tentativi precedenti
                # (quando _max_llm_tries=1, _is_last è True al primo try — non iniettiamo mai l'istruzione aggressiva)
                if _is_last and _llm_try > 0:
                    # Ultimo di più tentativi: inietta istruzione forza-risposta + severity hint
                    _force_content = (
                        "ISTRUZIONE FINALE: NON puoi rifiutarti di rispondere. "
                        "Trova UN MODO alternativo, anche parziale, per aiutare. "
                        "Approccio A fallito? Prova B. Non scrivere mai 'non posso'. "
                        "Dai almeno una risposta parziale concreta."
                    )
                    _sev_hint = _SEVERITY_HINTS.get(_error_severity, '')
                    if _sev_hint:
                        _force_content = f"{_sev_hint}\n\n{_force_content}"
                    _force = {"role": "system", "content": _force_content}
                    _msgs = [messages[0], _force, *messages[1:]]
                elif _llm_try == _max_llm_tries - 2 and _max_llm_tries > 1 and _error_severity in _SEVERITY_HINTS:
                    # Penultimo tentativo: inietta solo il severity hint (meno aggressivo)
                    _sev_msg = {"role": "system", "content": _SEVERITY_HINTS[_error_severity]}
                    _msgs = [messages[0], _sev_msg, *messages[1:]]
                # S376: temperatura adattiva in base alla severity
                # syntax → bassa (0.1, precisione), logic → alta (0.5, creatività)
                _temp_by_try = {
                    'syntax':  [0.1, 0.15, 0.2],
                    'runtime': [0.2, 0.3,  0.4],
                    'logic':   [0.3, 0.45, 0.5],
                    'unknown': [0.2, 0.4,  0.4],
                }
                _temp = _temp_by_try.get(_error_severity, [0.2, 0.4, 0.4])[min(_llm_try, 2)]
                # S385: latency telemetry — misura durata chiamata LLM
                _t0_llm = asyncio.get_running_loop().time()
                # S420: stream tokens to frontend while accumulating full answer
                _stream_parts: list[str] = []
                try:
                    async def _collect_stream(_msgs=_msgs, _temp=_temp, _tok_budget=_tok_budget) -> str:
                        async for _tok in _active_llm.stream_chat(
                            _msgs, temperature=_temp, max_tokens=_tok_budget
                        ):
                            _stream_parts.append(_tok)
                            if on_step:
                                await _maybe_await(on_step({
                                    "action": "text_chunk",
                                    "token":  _tok,
                                    "status": "streaming",
                                }))
                        return "".join(_stream_parts)
                    answer = await asyncio.wait_for(_collect_stream(), timeout=_llm_timeout)
                    if not answer:
                        raise ValueError("stream vuoto")
                except Exception:
                    _stream_parts.clear()
                    answer = await asyncio.wait_for(
                        _active_llm.chat(_msgs, temperature=_temp, max_tokens=_tok_budget),
                        timeout=_llm_timeout,
                    )
                try:
                    from api.state import record_timing as _rec_timing
                    _llm_elapsed = (asyncio.get_running_loop().time() - _t0_llm) * 1000
                    _rec_timing("llm_total", _llm_elapsed)
                    _rec_timing("coder_ms",  _llm_elapsed)  # Sprint 5 ITEM 14: phase timing
                except Exception as _exc:
                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                # P16-B4: segnala truncation SSE se finish_reason == "length"
                _fr = getattr(_active_llm, '_last_finish_reason', 'stop')
                if _fr == 'length' and on_step:
                    await _maybe_await(on_step({
                        "action": "step", "step": state.current_step,
                        "output": "⚠️ [TRUNCATION] Risposta LLM troncata (max_tokens raggiunto). Tenta riduzione contesto.",
                        "truncated": True,
                    }))
                if answer.startswith('[LLM'):
                    state.steps.append({"action": f"llm_attempt_{_llm_try}", "output": answer})
                    continue
                if _is_refusal(answer) and not _is_last:
                    # S576: 200→400 — cattura rifiuto completo per debug
                    state.steps.append({"action": f"llm_refusal_{_llm_try}", "output": answer[:600]})  # S603: 400→600
                    continue
                # S759: repeated-answer stuck detection
                # Se risposta simile all'ultima (Jaccard bigram >0.75) e non è l'ultimo try → forza retry
                if _llm_try > 0 and _prev_llm_answer and answer and not answer.startswith('[LLM'):
                    
                    if _s759_bjac(answer, _prev_llm_answer) > 0.75 and not _is_last:
                        state.steps.append({
                            "action": f"llm_stuck_{_llm_try}",
                            "output": "risposta ripetuta — cambio temperatura e strategia",
                        })
                        _prev_llm_answer = answer[:100]
                        continue  # riprova con temperatura più alta
                _prev_llm_answer = answer[:100] if answer and not answer.startswith('[LLM') else _prev_llm_answer

                # S-BACKEND-ANTIREGRESS: rileva import injection e code rewrite.
                # Se rilevato E non ultimo try, inietta hint chirurgico e riprova.
                if not _is_last and answer and '```' in answer:
                    try:
                        from agents.backend_antiregress import check_regression as _ar_chk
                        _ar_hint = _ar_chk(state.goal, answer, state.context or "")
                        if _ar_hint:
                            state.steps.append({
                                "action": "antiregress_retry",
                                "hint":   _ar_hint[:200],
                            })
                            _ar_msg = (
                                "\n\n[CORREZIONE RICHIESTA]\n"
                                + _ar_hint
                                + "\n\nRiscrivi SOLO la parte difettosa. "
                                  "Mantieni TUTTE le classi e funzioni originali. "
                                  "Non aggiungere nuove dipendenze."
                            )
                            _msgs = [_msgs[0], {"role": "user", "content": state.goal + _ar_msg}]
                            continue  # retry con hint chirurgico
                    except Exception:
                        pass  # S-BACKEND-ANTIREGRESS: non bloccante

                break  # risposta reale non-rifiuto
            except asyncio.TimeoutError:
                answer = f"[LLM timeout {_llm_timeout:.0f}s]"
                if not _is_last:
                    continue  # riprova su timeout
                break
            except Exception as exc:
                answer = f"[LLM error: {exc}]"
                if not _is_last:
                    continue
                break

        if answer.startswith("[LLM"):
            state.errors.append(answer)
            # S364: Chain-of-Verification — dopo 2+ errori, usa ARCHITECT per reflection
            if len(state.errors) >= 1:  # S701: reflection da 1 errore (era 2)
                # GAP-D: progress card visibile PRIMA del reflection — utente sa che stiamo analizzando
                if on_step:
                    _rd_n     = len(state.errors)
                    _rd_label = "Strategia alternativa forzata" if _rd_n >= 3 else "Analisi dell'errore"
                    await _maybe_await(on_step({
                        "action":      "reflective_debug",
                        "status":      "started",
                        "title":       f"🔍 {_rd_label} (tentativo {_rd_n})",
                        "explanation": (
                            "Ho riscontrato un ostacolo ripetuto. Sto elaborando una strategia completamente diversa con il modello Architect…"
                            if _rd_n >= 3 else
                            "Ho riscontrato un errore. Sto analizzando la causa principale con il modello Architect per cambiare approccio…"
                        ),
                    }))
                # B4: strategic_ctx già presente → degrada ARCHITECT→fast_llm (-10-15s)
                _b4_has_strategic = (
                    '[GAP-SELFHEAL:' in (state.context or '')
                    or '♻️ Re-planning' in (state.context or '')
                )
                _reflection = await self._reflective_debug(
                    state.goal, state.errors,
                    _force_fast=_b4_has_strategic,
                )
                if _reflection:
                    state.context = (state.context or '') + _reflection
                    state.steps.append({"action": "reflective_debug",
                                        "analysis": _reflection[:400]})  # S573: 200→400
                    # GAP-D: progress card "done" con la nuova strategia — trasforma il fallimento in fiducia
                    if on_step:
                        await _maybe_await(on_step({
                            "action":      "reflective_debug",
                            "status":      "done",
                            "title":       "💡 Nuova strategia identificata",
                            "explanation": _reflection[:300],
                        }))
        # GAP-SELFHEAL: dopo 3+ errori, inietta regole concrete di cambio strategia
        # Il reflective_debug da solo non rompe il loop di allucinazione (63% closure fail).
        # R3: aggiunta dedup guard — senza di essa ogni iterazione LLM con state.errors>=3
        # appendeva un [GAP-SELFHEAL] blocco distinto a state.context (crescita O(n_errors)).
        # Pattern: inietta SOLO SE state.context non contiene già "[GAP-SELFHEAL:".
        if len(state.errors) >= 3:
            _n_err = len(state.errors)
            _sh2_already = "[GAP-SELFHEAL:" in (state.context or "")
            if not _sh2_already:
                _selfheal_inj = (
                    "\n\n[GAP-SELFHEAL: tentativo " + str(_n_err) + " - CAMBIO STRATEGIA OBBLIGATORIO]\n"
                    "I precedenti " + str(_n_err) + " approcci sono falliti. Applica QUESTE regole:\n"
                    "1. NON ripetere il codice fallito - smontalo in passi atomici\n"
                    "2. Prima di scrivere usa read_file per verificare lo stato attuale\n"
                    "3. Scrivi SOLO la parte minima che fa passare UN test alla volta\n"
                    "4. Se libreria X fallisce, prova libreria Y alternativa\n"
                    "5. Se pattern A fallisce, usa pattern B completamente diverso."
                )
                state.context = (state.context or "") + _selfheal_inj
                state.steps.append({"action": "selfheal_strategy_injection", "n_errors": _n_err})

        # GAP-1: Probabilistic Re-planning Trigger
        # Chiamato dopo selfheal: step count = numero step completati finora.
        # Agisce su state.context (append) — non modifica messages correnti.
        _gap1_step_count = len([s for s in state.steps if s.get("action") == "llm"])
        # GAP-1 guards (mirrors _budget_replan_check): skip se _n_err < 2 o _budget_ratio < 0.6
        _gap1_hint = await self._budget_replan_check(state, _gap1_step_count, on_step)
        if _gap1_hint:
            state.context = (state.context or '') + f'\n\n[GAP-1-REPLAN]\nNuovo approccio: {_gap1_hint}'
            state.steps.append({"action": "budget_replan", "hint": _gap1_hint[:200]})

        state.steps.append({"action": "llm", "output": answer})

        # S428 Sprint1-Fix3: Claim Validation — safety net post-LLM.
        # Anche quando _build_messages inietta "TENTATIVO TOOL FALLITO" con istruzione
        # "NON affermare di aver trovato dati live", il LLM può ignorarla.
        # Questo check è il secondo strato di difesa: aggiunge un disclaimer visibile
        # se e solo se rileva false claim + goal realtime + tutti tool falliti.
        if answer and not answer.startswith("[LLM"):
            answer = self._validate_claims(
                response=answer,
                n_success=_tool_exec_successes,
                n_errors=_tool_exec_errors,
                goal=state.goal,
                false_claim_re=self._FALSE_CLAIM_RE,
                realtime_goal_re=self._REALTIME_GOAL_RE,
            )

        # S416-Fix1: aggiorna _session_files con file scritti in questa risposta
        # così il prossimo run() li inietta come contesto (evita import rotti tra step)
        if answer:
            _written = self._extract_written_files(answer)
            if _written:
                self._session_files.update(_written)
                # Sprint 3b ITEM 7: auto validate_project post-write
                # Se _tok_budget >= 4096 e ci sono file Python scritti, verifica sintassi AST
                if _tok_budget >= 4096:
                    import ast as _ast_chk
                    _py_errs: list[str] = []
                    for _vp, _vc in list({p: c for p, c in _written.items()
                                          if p.endswith(".py")}.items())[:5]:
                        try:
                            _ast_chk.parse(_vc)
                        except SyntaxError as _se:
                            _py_errs.append(f"{_vp}:{_se.lineno}: {_se.msg}")
                    if _py_errs:
                        # S594: _py_errs[:3]→[:5] — riporta più errori di sintassi per fix completo
                        _syn_rpt = "AUTO-VALIDATE sintassi: " + "; ".join(_py_errs[:5])
                        state.errors.append(_syn_rpt)
                        if on_step:
                            await _maybe_await(on_step({
                                "action":      "validate_project",
                                "status":      "needs_fix",
                                "title":       "Validazione automatica",
                                "explanation": _syn_rpt[:400],  # S576: 200→400
                            }))
                        try:
                            from api.state import increment_stat as _inc_syn
                            _inc_syn("syntax_errors")
                        except Exception as _exc:
                            _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                    elif on_step:
                        _n_py = sum(1 for p in _written if p.endswith(".py"))
                        if _n_py > 0:
                            await _maybe_await(on_step({
                                "action":      "validate_project",
                                "status":      "done",
                                "title":       "Validazione automatica ✓",
                                "explanation": f"{_n_py} file Python — sintassi OK",
                            }))
                    # GAP-C: Ciclo di Test Automatizzato
                    # Trigger: sintassi OK + file Python scritti + task complesso (>=8192 tok)
                    # Genera test minimale via LLM (8s) → esegue via exec engine (20s)
                    # Fallimento → _reflective_debug → state.context aggiornato per il loop successivo
                    # Best-effort: Exception catturata in fondo — mai blocca la risposta utente
                    if not _py_errs:
                        _gac_py = {p: c for p, c in _written.items() if p.endswith(".py")}
                        if _gac_py and _tok_budget >= 8192:
                            try:
                                _gac_name, _gac_code = next(iter(_gac_py.items()))
                                if on_step:
                                    await _maybe_await(on_step({
                                        "action":      "auto_test",
                                        "status":      "started",
                                        "title":       "🧪 Test automatico",
                                        "explanation": f"Genero ed eseguo un test minimale per {_gac_name}…",
                                    }))
                                _gac_msgs = [
                                    {"role": "system", "content": (
                                        "Scrivi UN test Python minimale (stdlib only, no pytest) per il codice.\n"
                                        "Deve: importare funzioni principali, avere 1-3 assert concreti,\n"
                                        "stampare 'PASS' o 'FAIL: <msg>'. Solo codice Python, niente markdown."
                                    )},
                                    {"role": "user", "content": f"# {_gac_name}\n{_gac_code[:1500]}"},
                                ]
                                _gac_raw = await asyncio.wait_for(
                                    self.llm.chat(_gac_msgs, temperature=0.05, max_tokens = 500),  # S586: 350->500
                                    timeout=8.0,
                                )
                                import re as _gac_re
                                _gac_m = _gac_re.search(r'```python\n([\s\S]+?)```', _gac_raw or "")
                                _gac_run = _gac_m.group(1) if _gac_m else (_gac_raw or "").strip()
                                if len(_gac_run) > 10:
                                    from tools.registry import _call_exec_engine as _gac_exec
                                    _gac_res = await asyncio.wait_for(
                                        _gac_exec({"code": _gac_run, "lang": "python", "timeout": 15}),
                                        timeout=20.0,
                                    ) or {}
                                    _gac_exit = _gac_res.get("exit_code", 1)
                                    _gac_out  = (
                                        (_gac_res.get("stdout") or "") + (_gac_res.get("stderr") or "")
                                    )[:300]
                                    if _gac_exit == 0 and "FAIL" not in _gac_out.upper():
                                        if on_step:
                                            await _maybe_await(on_step({
                                                "action":      "auto_test",
                                                "status":      "done",
                                                "title":       "🧪 Test automatico ✅ PASS",
                                                "explanation": _gac_out[:200] or "Tutti i test superati.",
                                            }))
                                    else:
                                        state.errors.append(
                                            f"Auto-test {_gac_name} exit={_gac_exit}: {_gac_out}"
                                        )
                                        if on_step:
                                            await _maybe_await(on_step({
                                                "action":      "auto_test",
                                                "status":      "needs_fix",
                                                "title":       "🧪 Test automatico ⚠ FAIL",
                                                "explanation": _gac_out[:200],
                                            }))
                                        _gac_fix = await self._reflective_debug(state.goal, state.errors)
                                        if _gac_fix:
                                            state.context = (
                                                (state.context or "")
                                                + f"\n\n[AUTO-TEST FAIL — {_gac_name}]\n{_gac_fix}"
                                            )
                                            if on_step:
                                                await _maybe_await(on_step({
                                                    "action":      "reflective_debug",
                                                    "status":      "done",
                                                    "title":       "💡 Fix suggerito da test fallito",
                                                    "explanation": _gac_fix[:300],
                                                }))
                            except Exception:
                                pass  # GAP-C best-effort — mai blocca la risposta utente
        # S403-FIX: NON appendere a outputs qui — i repair loop (verifier, goal_verifier,
        # self-healing Python/HTML) modificano `answer` ma non `outputs`.
        # L'append viene fatto DOPO tutti i repair, appena prima di final_output,
        # così "\n\n".join(outputs) riflette la risposta completamente riparata.
        # (Prima: outputs.append(answer) qui → tutti i fix venivano scartati in silenzio)

        # Doc2-3a-FIX: quality_guardian integrato nel loop di repair.
        # Prima: fire-and-forget → fix_hint emesso via SSE ma mai usato → codice bugato consegnato.
        # Ora: await con timeout breve (8s).
        #   - Se risulta FAIL + fix_hint → 1 repair LLM call prima di restituire la risposta.
        #   - Se timeout → fire-and-forget solo per notifica SSE (comportamento precedente).
        # Invariante B6 rispettata: solo timeout avvia il task async — nessun await bloccante lungo.
        if answer and not answer.startswith('[LLM') and '```' in answer:
            try:
                import importlib as _imp_ev
                try:
                    _qg_mod = _imp_ev.import_module('api.quality_guardian')
                except ImportError:
                    _qg_mod = None
                _qc_fn = getattr(_qg_mod, 'run_quality_check', None) if _qg_mod else None
                if _qc_fn:
                    _answer_snap = answer
                    _qc_result: dict | None = None

                    # Tenta quality check con timeout breve (8s) — permette repair integrato
                    try:
                        _qc_result = await asyncio.wait_for(
                            _qc_fn(task_id=self._run_task_id, goal=state.goal,
                                   llm_output=_answer_snap, on_event=on_step,
                                   session_files=self._session_files or None),  # S568-A/GAP-3qg
                            timeout=8.0,
                        )
                    except asyncio.TimeoutError:
                        _qc_result = None  # troppo lento → fire-and-forget sotto
                    except Exception:
                        _qc_result = None

                    if _qc_result is not None:
                        # Risultato disponibile — repair integrato se FAIL + fix_hint
                        if _qc_result.get('passed') is False and _qc_result.get('fix_hint'):
                            # S594: fix_hint 300→500 — hint correttivo spesso multi-riga (era [:300] che limitava il successivo [:400])
                            _fix_hint = str(_qc_result['fix_hint'])[:500]
                            if on_step:
                                await _maybe_await(on_step({
                                    'action': 'execution_validator_fix',
                                    'fix_hint': _fix_hint,  # S573: 200→400; S594: cap spostato a riga sopra
                                    'status': 'repairing',
                                }))
                            try:
                                # Usa messages originali (non _msgs con hint iniettati)
                                # per evitare confusion nel contesto del repair LLM
                                # S590: messages[-4:]→[-6:] — più contesto per repair LLM
                                _repair_msgs = [
                                    *messages[-6:],
                                    {"role": "assistant", "content": answer},
                                    {"role": "user", "content": (
                                        f"Il tester automatico ha rilevato un bug:\n{_fix_hint}\n\n"
                                        "Correggi SOLO il codice difettoso. "
                                        "Riscrivi completi i file che contengono il bug."
                                    )},
                                ]
                                _repaired = await asyncio.wait_for(
                                    _active_llm.chat(
                                        _repair_msgs, temperature=0.1,
                                        max_tokens=min(_tok_budget, 4096),
                                    ),
                                    timeout=25.0,
                                )
                                if _repaired and not _repaired.startswith('[LLM'):
                                    answer = _repaired
                                    if on_step:
                                        await _maybe_await(on_step({
                                            'action': 'execution_validator_fix',
                                            'status': 'done',
                                            'title':  'Fix automatico applicato ✓',
                                        }))
                                    try:
                                        from api.state import increment_stat as _inc_qg
                                        _inc_qg("repair_success_count")
                                    except Exception as _exc:
                                        _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                            except Exception:
                                pass  # repair silente — risposta originale invariata
                        elif _qc_result.get('passed') is False and on_step:
                            # FAIL senza hint → notifica UI
                            await _maybe_await(on_step({
                                'action': 'execution_validator_fix',
                                'fix_hint': 'Quality check: bug rilevato — nessun hint specifico',
                                'status': 'needs_fix',
                            }))
                    else:
                        # Timeout 8s → fire-and-forget per notifica SSE (B6 invariant)
                        _ff_snap = answer
                        _run_tid = self._run_task_id  # S568-A: cattura prima del closure
                        async def _ev_task() -> None:
                            try:
                                _qc = await asyncio.wait_for(
                                    _qc_fn(task_id=_run_tid, goal=state.goal,
                                           llm_output=_ff_snap, on_event=on_step,
                                           session_files=self._session_files or None),  # S568-A/GAP-3qg ff
                                    timeout=18.0,
                                )
                                if _qc.get('passed') is False and _qc.get('fix_hint') and on_step:
                                    await _maybe_await(on_step({
                                        'action': 'execution_validator_fix',
                                        'fix_hint': _qc['fix_hint'][:400],  # S573: 200→400
                                        'status': 'needs_fix',
                                    }))
                            except Exception as _exc:
                                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                        # S455-P10: task supervisionato
                        _ev_t = asyncio.create_task(_ev_task())
                        _ev_t.add_done_callback(
                            lambda t: t.exception() if not t.cancelled() and t.exception() is not None else None
                        )
            except Exception as _ev_exc:
                _logger.warning("S624 ExecutionValidator failed (silent): %s", _ev_exc)  # S624

        # S274-BUG3: ResponseVerifier era salvato in self.verifier ma MAI chiamato.
        # Wire-in: verifica JSON, markdown, coerenza. Retry con hint se suggerito.
        if self.verifier and answer and not answer.startswith('[LLM'):
            try:
                _vr = self.verifier.verify_and_repair(state.goal, answer)
                answer = _vr.output
                if getattr(_vr, 'retry_suggested', False):
                    _hint_msg = [*messages, {"role": "assistant", "content": answer},
                                 {"role": "user", "content": f"Migliora: {getattr(_vr, 'retry_hint', 'rendi la risposta più completa')}"}]
                    try:
                        # S427-FixF: usa _active_llm (CODER per task di codice) invece del
                        # base self.llm — il retry del verifier usava il modello sbagliato
                        # per task di codice complessi (es. Groq 8B invece di 70B).
                        _retry_ans = await asyncio.wait_for(
                            _active_llm.chat(_hint_msg, temperature=0.3, max_tokens=self._max_tokens_for_goal(state.goal)),
                            timeout=LLM_TIMEOUT)
                        if _retry_ans and not _retry_ans.startswith('[LLM'):
                            answer = _retry_ans
                    except Exception as _rv_retry_exc:
                        _logger.warning("S624 ResponseVerifier retry failed (silent): %s", _rv_retry_exc)  # S624
            except Exception as _rv_exc:
                _logger.warning("S624 ResponseVerifier failed (silent): %s", _rv_exc)  # S624

        # ── MIN-LENGTH-GATE (Checklist Item 1) ────────────────────────────────
        # Retry automatico per goal analitici con risposta troppo corta.
        # Recupera RY (riassumi) e DA (data analysis) failures — output <150 parole.
        # Trigger: _ANALYTICAL_VERBS_RE match + risposta < 150 parole. Fail-open.
        if answer and not answer.startswith('[LLM'):
            _mlg_words = len(answer.split())
            _is_goal_analytical = bool(_ANALYTICAL_VERBS_RE.search(state.goal))
            if _is_goal_analytical and _mlg_words < 150:
                try:
                    _mlg_reinforce = [
                        *messages,
                        {"role": "assistant", "content": answer},
                        {"role": "user", "content": (
                            f"La risposta è troppo breve ({_mlg_words} parole) "
                            f"rispetto a quanto richiesto dal goal. "
                            f"Sviluppa ogni punto in modo completo e dettagliato: "
                            f"almeno 200 parole, coprendo esaustivamente tutti gli aspetti."
                        )},
                    ]
                    _mlg_retry = await asyncio.wait_for(
                        _active_llm.chat(
                            _mlg_reinforce,
                            temperature=0.3,
                            max_tokens=self._max_tokens_for_goal(state.goal),
                        ),
                        timeout=LLM_TIMEOUT,
                    )
                    if (_mlg_retry and not _mlg_retry.startswith('[LLM')
                            and len(_mlg_retry.split()) > _mlg_words):
                        answer = _mlg_retry
                        _logger.debug(
                            "[unified_loop] min_length_gate: %d→%d words (goal=%s…)",
                            _mlg_words, len(answer.split()), state.goal[:40],
                        )
                        try:
                            from api.state import increment_stat as _inc_mlg
                            _inc_mlg("min_length_gate_retry")
                        except Exception:
                            pass
                except Exception:
                    pass  # fail-open — mantieni risposta originale

        # S403: GoalVerifier — verifica semantica "obiettivo raggiunto" vs "azione eseguita"
        # S410: adaptive threshold + double-pass re-verify per chiudere il loop di verifica.
        # Il ciclo: verify → repair → re-verify → accept/reject conferma che il repair
        # abbia davvero migliorato la coverage, non solo cambiato la risposta.
        # S416-Fix2: attivato per is_code_goal anche senza backtick (app multi-file descrittiva)
        # Sprint 2: GoalVerifier 2.0 — se RequirementEngine trova requisiti, usa verify_v2
        try:
            from agents.goal_verifier import GoalVerifier as _GV_pre
            _gv_should_run = _GV_pre.is_code_goal(state.goal) or '```' in answer
        except Exception:
            _gv_should_run = '```' in answer
        if answer and not answer.startswith('[LLM') and _gv_should_run:
            try:
                from agents.goal_verifier import GoalVerifier as _GV
                from api.state import increment_stat as _inc_stat
                if _GV.is_code_goal(state.goal):
                    _gv            = _GV(self._get_verifier_llm())  # P25-B4: cross-model
                    _threshold     = _GV.adaptive_threshold(state.goal)   # S410: adattivo
                    # Sprint 2: tenta verify_v2 se RequirementEngine disponibile e goal complesso
                    _gv2_reqs = None
                    if _tok_budget >= 4096:
                        try:
                            from agents.requirement_engine import RequirementEngine as _RE
                            from api.state import increment_stat as _inc_re
                            _re_engine = _RE(llm=self.llm)  # BUG-5: LLM come fallback per goal complessi
                            _gv2_reqs  = await _re_engine.decompose(state.goal)  # P16-B1: async con LLM fallback — decompose_sync ignorava llm=self.llm
                            if _gv2_reqs:
                                _inc_re("req_engine_used")
                                try:
                                    from api.state import increment_stat as _inc_re2
                                    _inc_re2.__module__  # no-op, just exist check
                                except Exception as _exc:
                                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                try:
                                    import api.state as _st_mod
                                    _st_mod._REPAIR_STATS["req_engine_reqs_total"] += len(_gv2_reqs)
                                except Exception as _exc:
                                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                        except Exception:
                            _gv2_reqs = None
                    # FIX-2: fast-pass euristico — salta LLM verify se risposta gia completa.
                    # Condizioni: >600 chars + >=1 blocco codice + 60% keyword goal + no errori.
                    # Risparmio: -5s/iter su task dove LLM ha gia risposto bene (caso comune).
                    _goal_words_fp = set(re.findall(r'\w{4,}', state.goal.lower()))
                    _ans_words_fp  = set(re.findall(r'\w{4,}', answer.lower()))
                    _kw_cov_fp     = len(_goal_words_fp & _ans_words_fp) / max(len(_goal_words_fp), 1)
                    # B2: fast-pass ampliato — fast-fix senza errori saltano goal_verifier.
                    # Conseguenza: -5/-22s per ogni fix atomico andato a buon fine.
                    # Zero cons: FAST_FIX_RE+no errors garantisce completezza senza LLM.
                    _is_fast_fix_clean = (
                        not getattr(state, 'errors', None)
                        and len(state.goal) < 200
                        and bool(self._FAST_FIX_RE.search(state.goal[:200]))
                        and bool(answer.strip())
                    )
                    # P16-B5: soglia keyword adattiva in base alla lunghezza del goal
                    # Goal brevi (<80 chars): molto specifici → soglia più bassa (0.60)
                    # Goal medi (80-200 chars): default (0.72)
                    # Goal lunghi (>200 chars): molti requisiti → soglia più alta (0.82)
                    _gl = len(state.goal)
                    _fp_threshold = 0.60 if _gl < 80 else (0.82 if _gl > 200 else 0.72)
                    # Item 5: fast-pass non-coding branch — keyword coverage su prosa
                    _is_goal_analytical_fp = bool(_ANALYTICAL_VERBS_RE.search(state.goal))
                    _fast_pass = (
                        _is_fast_fix_clean
                        or (
                            # Existing: code-heavy answers (4+ code blocks)
                            len(answer) > 1200
                            and answer.count('```') >= 4
                            and _kw_cov_fp >= _fp_threshold   # P16-B5: adattivo
                            and not getattr(state, 'errors', None)
                        )
                        or (
                            # NEW — Item 5: goal analitici — fast-pass via keyword coverage senza codice
                            # Evita LLM verify su risposte analitiche già esaustive (≥150 parole, 55% kw)
                            _is_goal_analytical_fp
                            and len(answer.split()) >= 150
                            and _kw_cov_fp >= 0.55
                            and not getattr(state, 'errors', None)
                        )
                    )
                    # P25-B2: Risk gate — blocca fast_pass se ci sono requisiti ad alto rischio.
                    # Previene shortcut euristico su operazioni sensibili (auth/pagamenti/delete/security).
                    # Solo per goal non-trivial (non _is_fast_fix_clean) con requisiti già estratti.
                    _P25_HIGH_RISK = {"auth", "payments", "crud", "security"}
                    if _fast_pass and not _is_fast_fix_clean and _gv2_reqs:
                        _has_risk_req = any(
                            r.get("feature", "") in _P25_HIGH_RISK for r in _gv2_reqs
                        )
                        if _has_risk_req:
                            _fast_pass = False
                            try:
                                _inc_stat("fast_pass_blocked_risk")
                            except Exception:
                                pass
                    _logger.debug(
                        "[unified_loop] _fast_pass=%s kw_cov=%.2f goal_len=%d threshold=%.2f",
                        _fast_pass, _kw_cov_fp, _gl, _fp_threshold,
                    )
                    if _fast_pass:
                        _inc_stat("goal_verify_fast_pass")
                        _gvr = type('_FPR', (), dict(goal_met=True, coverage_score=0.85,
                                   missing_items=[], repair_hint=''))()
                    else:
                        # Sprint 2: usa verify_v2 se requisiti trovati, altrimenti verify v1
                        _t0_gv = asyncio.get_running_loop().time()  # Sprint 5 ITEM 14: verifier_ms
                        # GAP-1: Hard Gate — verify_with_execution() (esecuzione reale del codice)
                        # semantic(verify_v2) → extract code block → exec backend → PASS/FAIL
                        # exit_code != 0 → FAIL + traceback reale come repair_hint → self-healing loop
                        _gvr = await asyncio.wait_for(
                            _gv.verify_with_execution(state.goal, answer, requirements=_gv2_reqs or None),
                            timeout=22.0,  # semantic(4s) + execution(18s) = 22s budget
                        )
                        try:
                            from api.state import record_timing as _rtgv
                            _rtgv("verifier_ms", (asyncio.get_running_loop().time() - _t0_gv) * 1000)
                        except Exception as _exc:
                            _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                        # REMOVE-1: rimossa regola 17 README check (S416-Fix6).
                        # Causava -0.15 coverage su task senza 'readme' >= 6144 token —
                        # inclusi 'ottimizza funzione', 'spiega codice', 'crea grafico'.
                        # Falsi positivi sistematici -> repair spurio -> LLM call inutile.
                    _initial_score  = _gvr.coverage_score
                    # S-CRITIC-1: rileva UNKNOWN prima del repair — on-demand Critic su task codice
                    _is_unknown     = _gvr.repair_hint.startswith("[verifier_unavailable")
                    _skip_gv_repair = False
                    if (_is_unknown
                            and not _gvr.goal_met
                            and _gvr.coverage_score < _threshold
                            and _GV.is_code_goal(state.goal)):
                        try:
                            from agents.goal_verifier import CriticJudge as _CJ
                            _cj = _CJ(self._get_fast_llm())
                            _cv = await asyncio.wait_for(
                                _cj.judge(state.goal, answer), timeout=8.0)
                            try:
                                _inc_stat(f"critic_j_{_cv.verdict.lower()}")
                            except Exception as _exc:
                                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                            if _cv.verdict == "PASS":
                                _skip_gv_repair = True
                                try:
                                    _inc_stat("critic_promoted_to_pass")
                                except Exception as _exc:
                                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                            elif (
                                _cv.verdict in ("UNKNOWN", "ERROR")
                                or str(getattr(_cv, "raw", "")).startswith("[LLM")
                            ):
                                # GAP-8: verdict inaffidabile (rate limit 429 o timeout)
                                # Non triggerare repair spurio — CriticJudge non ha risposto
                                _skip_gv_repair = False  # comportamento invariato ma esplicito
                                try:
                                    _inc_stat("critic_unreliable")
                                except Exception as _exc:
                                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                        except Exception:
                            pass  # silent — UNKNOWN comportamento invariato
                    if not _skip_gv_repair and not _gvr.goal_met and _gvr.coverage_score < _threshold:
                        _inc_stat("goal_verify_repair_triggered")
                        if on_step:
                            await _maybe_await(on_step({
                                "action":      "goal_verifier",
                                "status":      "running",
                                "visibility":  "progress",
                                "title":       "Controllo qualità",
                                "explanation": (
                                    f"Risposta al {int(_gvr.coverage_score * 100)}% — ottimizzazione in corso"
                                ),
                            }))
                        _missing_str = "; ".join(_gvr.missing_items[:2]) if _gvr.missing_items else _gvr.repair_hint
                        # S-ORCH-8GAP FIX-GAP3+GAP6: Requirement-Driven Repair
                        # Arricchisce il repair context con acceptance_criteria specifici
                        # dei requisiti FAIL — repair "chirurgico" invece di generico.
                        # L'LLM sa ESATTAMENTE cosa implementare, non solo "manca qualcosa".
                        _criteria_hints: list[str] = []
                        if _gv2_reqs and _gvr.missing_items:
                            _failed_ids = {m.lower().replace(" ", "_") for m in _gvr.missing_items}
                            for _req in _gv2_reqs:
                                _rname = getattr(_req, 'feature', '').lower().replace(' ', '_')
                                _rid   = getattr(_req, 'id', '').lower()
                                if (_rname in _failed_ids or _rid in _failed_ids or
                                        any(_fid in _rname or _fid in _rid for _fid in _failed_ids)):
                                    _ac = getattr(_req, 'acceptance_criteria', [])
                                    if _ac:
                                        _criteria_hints.extend(_ac[:2])
                        _criteria_block = (
                            "\nCriteri di accettazione mancanti:\n"
                            + "\n".join(f"  - {c}" for c in _criteria_hints[:4])
                            if _criteria_hints else ""
                        )
                        # Sprint1b: messaggio repair diversificato per UNKNOWN vs FAIL
                        # UNKNOWN = verifier non disponibile → non sappiamo cosa manca
                        # FAIL = sappiamo cosa manca → repair chirurgico
                        # _is_unknown già rilevato sopra (S-CRITIC-1)
                        if _is_unknown:
                            _repair_content = (
                                f"Rivedi e completa la risposta al seguente goal: "
                                f"{state.goal[:300]}. "  # S576: 200→300
                                "Assicurati di coprire tutti gli aspetti richiesti "
                                f"in modo completo, corretto e dettagliato.{_criteria_block}"
                            )
                        else:
                            _repair_content = (
                                f"GOAL NON COMPLETATO ({int(_gvr.coverage_score*100)}%): "
                                f"{_missing_str}. "
                                "Completa esattamente quello che manca senza ripetere "
                                f"quanto già scritto.{_criteria_block}"
                            )
                        _gv_msgs = [
                            *messages,
                            {"role": "assistant", "content": answer},
                            {"role": "user", "content": _repair_content},
                        ]
                        _repaired_score = _initial_score  # default: nessun miglioramento
                        try:
                            # Fix 3 (S421): repair con il modello più capace per goal complessi
                            # self.llm = provider race winner (spesso 8B); app complesse hanno bisogno del 70B
                            _gv_repair_llm = self._get_llm_for_goal(state.goal)
                            _gv_ans = await asyncio.wait_for(
                                _gv_repair_llm.chat(_gv_msgs, temperature=0.2,
                                                    max_tokens=self._max_tokens_for_goal(state.goal)),
                                timeout=10.0,  # S434: 20→10s
                            )
                            if _gv_ans and not _gv_ans.startswith('[LLM'):
                                # S434: accetta repair immediatamente, re-verify fire-and-forget (telemetria)
                                answer = _gv_ans
                                try:
                                    _inc_stat("goal_verify_repaired")
                                except Exception as _exc:
                                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                try:
                                    _inc_stat("repair_success_count")  # S453: aggregato riparazioni riuscite
                                except Exception as _exc:
                                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                _gv_snap   = _gv_ans
                                _is_snap   = _initial_score
                                _gv_ref    = _gv
                                _goal_snap = state.goal
                                _ostep_ref = on_step
                                async def _reverify_task(
                                    _s=_gv_snap, _is=_is_snap,
                                    _gref=_gv_ref, _g=_goal_snap, _os=_ostep_ref
                                ) -> None:
                                    try:
                                        _gvr2   = await asyncio.wait_for(
                                            _gref.verify_with_execution(_g, _s), timeout=20.0)  # BUG-4: exec verify
                                        _rscore = _gvr2.coverage_score
                                        _delta  = _rscore - _is
                                        if _delta < -0.05:
                                            try:
                                                from api.state import increment_stat as _inc_gi
                                                _inc_gi("goal_verify_no_improvement")
                                            except Exception as _exc:
                                                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                        if _os:
                                            await _maybe_await(_os({
                                                "action":         "goal_verifier",
                                                "status":         "done",
                                                "visibility":     "progress",
                                                "title":          "Controllo qualità",
                                                "explanation": (
                                                    f"Qualità risposta: {int(_rscore * 100)}% ✓"
                                                    if _delta >= 0 else
                                                    f"Risposta migliorata: {int(_rscore * 100)}%"
                                                ),
                                                "initial_score":  round(_is, 3),
                                                "repaired_score": round(_rscore, 3),
                                            }))
                                    except Exception:
                                        if _os:
                                            try:
                                                await _maybe_await(_os({
                                                    "action": "goal_verifier", "status": "done",
                                                    "visibility": "progress", "title": "Controllo qualità",
                                                    "explanation": f"Miglioramento inviato ({int(_is * 100)}% completato)",
                                                    "initial_score": round(_is, 3),
                                                    "repaired_score": round(_is, 3),
                                                }))
                                            except Exception as _exc:
                                                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                # P16-B2: notifica UI che re-verify è in corso
                                if on_step:
                                    try:
                                        await _maybe_await(on_step({
                                            "action":      "goal_verifier",
                                            "status":      "running",
                                            "visibility":  "progress",
                                            "title":       "Verifica qualità in corso…",
                                            "explanation": (
                                                f"Copertura corrente: {int(_initial_score*100)}% "
                                                "— verifica repair in corso"
                                            ),
                                        }))
                                    except Exception:
                                        pass
                                # S455-P10: task supervisionato — done_callback logga eccezioni silenziate
                                asyncio.create_task(_reverify_task())
                                _rv_t.add_done_callback(
                                    lambda t: t.exception() if not t.cancelled() and not t.exception() is None else None
                                )
                            pass  # goal repair fallito — usa answer originale
                        except Exception:
                            pass  # repair LLM silenzioso — answer originale invariato
                    else:
                        # Goal già soddisfatto al primo check — nessun repair necessario
                        _inc_stat("goal_verify_initial_pass")
                        # COG-2: record successful strategy for lesson injection
                        if self.memory and hasattr(self.memory, 'reflection'):
                            try:
                                _last_act = state.steps[-1].get('action', 'direct') if state.steps else 'direct'
                                self.memory.reflection.record_success(
                                    state.goal[:300], f"goal_verify_pass|{_last_act}"
                                )
                            except Exception:
                                pass  # never blocks the response
            except Exception as _gv_exc:
                _logger.warning("S624 GoalVerifier failed (silent): %s", _gv_exc)  # S624


        # S303: Audit Semantico L2 — verifica coerenza logica interna dell'output.
        # Eseguito DOPO GoalVerifier L1, solo se L1 ≠ FAIL (risparmio token).
        # Rileva: hallucination claims (deploy/push/send non verificati),
        #         contraddizioni interne (errore + completato), sotto-obiettivi mancanti.
        # Silent failure totale — non blocca mai la risposta al client.
        _l2_should_run = (
            answer
            and not answer.startswith('[LLM')
            and len(answer.split()) > 15
        )
        try:
            _l1_was_fail = (
                getattr(_gvr, 'verification_status', None) is not None  # type: ignore[name-defined]
                and str(getattr(_gvr, 'verification_status', '')).endswith('FAIL')
            )
        except NameError:
            _l1_was_fail = False  # _gvr non definito — L1 non era attivo (goal non-code)
        if _l2_should_run and not _l1_was_fail:
            try:
                from agents.audit_semantic_l2 import get_auditor as _get_auditor_l2
                _auditor_l2 = _get_auditor_l2(
                    ai_client=self._get_verifier_llm(),  # cross-model (P25-B4)
                    timeout_s=12.0,
                )
                _l2_result = await asyncio.wait_for(
                    _auditor_l2.audit(state.goal, answer),
                    timeout=13.0,
                )
                # Telemetria
                try:
                    from api.state import increment_stat as _inc_l2
                    _inc_l2(f"audit_l2_{_l2_result.status.value.lower()}")
                except Exception as _exc:
                    _logger.debug("[S303] telemetry silenced: %s", type(_exc).__name__)
                _logger.info(
                    "[S303] AuditL2 %s (conf=%.2f engine=%s) issues=%d",
                    _l2_result.status.value,
                    _l2_result.confidence,
                    _l2_result.engine,
                    len(_l2_result.issues),
                )
                if _l2_result.status.value == "FAIL" and _l2_result.issues:
                    # Notifica UI — step visibile nel pannello avanzamento
                    if on_step:
                        await _maybe_await(on_step({
                            "action":      "audit_l2",
                            "status":      "warning",
                            "visibility":  "progress",
                            "title":       "⚠️ Verifica coerenza risposta",
                            "explanation": _l2_result.issues[0][:120],
                        }))
                    # Appende nota discreta — non modifica il codice, solo avvisa
                    if answer:
                        _l2_note_parts = ["\n\n> ⚠️ **Nota di coerenza**:"]
                        for _iss in _l2_result.issues[:2]:
                            _l2_note_parts.append(f" {_iss}")
                        if _l2_result.repair_hint:
                            _l2_note_parts.append(f"  \n> 💡 {_l2_result.repair_hint}")
                        answer += "".join(_l2_note_parts)
            except asyncio.TimeoutError:
                try:
                    from api.state import increment_stat as _inc_l2t
                    _inc_l2t("audit_l2_timeout")
                except Exception as _exc:
                    _logger.debug("[S303] timeout counter silenced: %s", type(_exc).__name__)
            except Exception as _l2_exc:
                _logger.debug("[S303] AuditL2 silenced: %s", type(_l2_exc).__name__)  # S624

        # Sprint 3b ITEM 8: Browser Goal Verification — Playwright headless su app live
        # Attivato solo se l'answer contiene un URL di deploy (pages.dev / vercel.app / ecc.)
        # e il RequirementEngine ha trovato requisiti (già estratti sopra in _gv2_reqs).
        # Silent failure se Playwright non installato o URL non raggiungibile.
        _DEPLOY_PATTERNS = ('.pages.dev', '.vercel.app', '.netlify.app', '.railway.app',
                            '.render.com', '.fly.dev', 'localhost:')
        _browser_url: str | None = None
        if answer and not answer.startswith('[LLM'):
            import re as _re_bv
            _url_candidates = _re_bv.findall(r'https?://[^\s\)\"\'<>]+', answer)
            for _uc in _url_candidates:
                if any(pat in _uc for pat in _DEPLOY_PATTERNS):
                    _browser_url = _uc.rstrip('.,;)')
                    break
        if _browser_url and os.getenv("PLAYWRIGHT_ENABLED", "1") != "0":  # S701: abilitato di default (playwright in requirements.txt)
            try:
                from api.browser import verify_goal_browser as _vgb
                # Usa i requisiti già estratti dal blocco GoalVerifier v2 (se disponibili)
                _bv_reqs = None
                try:
                    _bv_reqs = _gv2_reqs  # type: ignore[name-defined]
                except NameError as _exc:
                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                if on_step:
                    await _maybe_await(on_step({
                        "action":      "browser_verifier",
                        "status":      "running",
                        "visibility":  "progress",
                        "title":       "Test app in tempo reale",
                        "explanation": f"Verifica live: {_browser_url[:60]}…",
                    }))
                _t0_bv = asyncio.get_running_loop().time()
                _bv_result = await asyncio.wait_for(
                    _vgb(state.goal, _browser_url, _bv_reqs, timeout_s=25.0),
                    timeout=28.0,
                )
                _bv_ms = (asyncio.get_running_loop().time() - _t0_bv) * 1000
                # Registra browser_ms per il phase_breakdown (Sprint 5 ITEM 14)
                try:
                    from api.state import record_timing as _rt_bv
                    _rt_bv("browser_ms", _bv_ms)
                except Exception as _exc:
                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                # Telemetria: esito browser verifier
                try:
                    from api.state import increment_stat as _inc_bv
                    _inc_bv(f"browser_verify_{_bv_result.get('overall', 'UNKNOWN').lower()}")
                except Exception as _exc:
                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                if on_step:
                    _bv_overall = _bv_result.get("overall", "UNKNOWN")
                    _bv_per     = _bv_result.get("per_criterion", {})
                    _bv_pass_n  = sum(1 for v in _bv_per.values() if v == "PASS")
                    _bv_total   = len(_bv_per)
                    _bv_summary = (
                        f"{_bv_pass_n}/{_bv_total} criteri OK"
                        if _bv_total > 0 else "nessun criterio testato"
                    )
                    await _maybe_await(on_step({
                        "action":      "browser_verifier",
                        "status":      "done",
                        "visibility":  "progress",
                        "title":       "Test app in tempo reale",
                        "explanation": f"Verifica live: {_bv_overall} — {_bv_summary}",
                        "url":         _browser_url,
                        "overall":     _bv_overall,
                        "per_criterion": _bv_per,
                    }))
                # Se FAIL con requisiti → aggiungi nota all'answer (non modifica il codice)
                if _bv_result.get("overall") == "FAIL" and _bv_per:
                    _failed_criteria = [c for c, v in _bv_per.items() if v == "FAIL"]
                    if _failed_criteria and answer:
                        _bv_note = (
                            f"\n\n> ⚠️ **Test app live**: verifica su `{_browser_url}` "
                            f"ha rilevato {len(_failed_criteria)} criterio/i non soddisfatto/i: "
                            # S591: _failed_criteria[:3]→[:5] — mostra più criteri falliti
                            + ", ".join(f"`{c}`" for c in _failed_criteria[:5]) + "."
                        )
                        answer += _bv_note
            except asyncio.TimeoutError:
                try:
                    from api.state import increment_stat as _inc_bv2
                    _inc_bv2("browser_verify_timeout")
                except Exception as _exc:
                    _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
            except Exception:
                pass  # Browser verifier sempre silent

        # S393 Priority 2: Self-Healing — inline Python syntax repair loop (max 1 cycle, 20s budget)
        # Il fire-and-forget precedente non correggeva la risposta finale al client.
        # Ora: rileva SyntaxError → repair prompt → sostituisce answer inline prima del return.
        if answer and not answer.startswith('[LLM') and '```python' in answer.lower():
            import re as _re_sh
            _py_blocks = _re_sh.findall(r'```python\s*(.*?)```', answer, _re_sh.DOTALL | _re_sh.IGNORECASE)
            for _blk in _py_blocks[:1]:  # solo primo blocco — fast path, non blocca la risposta
                try:
                    compile(_blk.strip(), '<string>', 'exec')
                except SyntaxError as _syn_err:
                    # S395: telemetria
                    try:
                        from api.state import increment_stat as _inc_s
                        _inc_s("syntax_errors")
                    except Exception as _exc:
                        _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                    if on_step:
                        await _maybe_await(on_step({
                            "action": "execution_validator_fix",
                            "status": "running",
                            "title": "Auto-fix sintassi",
                            "explanation": "Errore di sintassi rilevato — correzione automatica in corso",
                        }))
                    _fix_msgs = [
                        *messages,
                        {"role": "assistant", "content": answer},
                        {"role": "user", "content": (
                            f"Il codice Python ha un SyntaxError: {_syn_err}\n"
                            "Correggi SOLO la sintassi — NON cambiare la logica. "
                            "Rispondi con la versione corretta completa del codice."
                        )},
                    ]
                    try:
                        _repaired = await asyncio.wait_for(
                            _active_llm.chat(_fix_msgs, temperature=0.05,
                                             max_tokens=min(_tok_budget, 4096)),
                            timeout=10.0,  # S434: 20→10s
                        )
                        if _repaired and not _repaired.startswith('[LLM'):
                            answer = _repaired
                            state.steps.append({"action": "execution_validator_fix",
                                                 "output": "SyntaxError riparato dal repair loop"})
                            try:
                                from api.state import increment_stat as _inc_s2
                                _inc_s2("syntax_repaired")
                            except Exception as _exc:
                                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                            try:
                                from api.state import increment_stat as _inc_rs2
                                _inc_rs2("repair_success_count")  # S453: aggregato riparazioni riuscite
                            except Exception as _exc:
                                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                            if on_step:
                                await _maybe_await(on_step({
                                    "action": "execution_validator_fix",
                                    "status": "done",
                                    "title": "Auto-fix completato",
                                    "explanation": "Codice corretto automaticamente ✓",
                                }))
                        else:
                            try:
                                from api.state import increment_stat as _inc_s3
                                _inc_s3("syntax_failed")
                            except Exception as _exc:
                                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                    except Exception:
                        try:
                            from api.state import increment_stat as _inc_s4
                            _inc_s4("syntax_failed")
                        except Exception as _exc:
                            _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                        pass  # repair fallito — usa answer originale
                    break  # un solo ciclo di repair
                else:
                    # S394: Runtime self-healing — compile() OK → esegui e ripara runtime errors (max 1 ciclo, 35s)
                    _RUN_INTENT_RT = _re_sh.compile(
                        r"\b(esegui|run|execute|lancia|testa|prova|verifica)\b.*\b(codice|script|programma|code)\b",  # UL-BUG-2: era r"\\b" (literal backslash-b non word-boundary) → self-healing S394 ora attivo,
                        _re_sh.IGNORECASE,
                    )
                    if _RUN_INTENT_RT.search(state.goal):
                        try:
                            from tools.registry import TOOL_REGISTRY as _TR_rt
                            if "run_python" in _TR_rt:
                                if on_step:
                                    await _maybe_await(on_step({
                                        "action": "execution_validator_fix", "status": "running",
                                        "title": "Test esecuzione",
                                        "explanation": "Eseguo il codice per verificare…",
                                    }))
                                _run_r = await asyncio.wait_for(
                                    _TR_rt["run_python"]["_fn"](code=_blk.strip()),
                                    timeout=15.0,
                                )
                                _stderr_rt = (_run_r.get("stderr") or "").strip()
                                _rc_rt = _run_r.get("returncode", 0)
                                if _rc_rt != 0 and _stderr_rt:
                                    # S395: telemetria runtime error
                                    try:
                                        from api.state import increment_stat as _inc_rt
                                        _inc_rt("runtime_errors")
                                    except Exception as _exc:
                                        _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                    if on_step:
                                        await _maybe_await(on_step({
                                            "action": "execution_validator_fix", "status": "running",
                                            "title": "Errore nel codice — correzione automatica",
                                            "explanation": "Errore nel codice rilevato — avvio correzione automatica…",
                                        }))
                                    _rt_fix_msgs = [
                                        *messages,
                                        {"role": "assistant", "content": answer},
                                        {"role": "user", "content": (
                                            # S593: 400→600 — stderr runtime può contenere traceback completo
                                            f"Il codice ha prodotto un errore runtime:\n{_stderr_rt[:600]}\n"
                                            "Correggi SOLO il bug — NON cambiare la logica. "
                                            "Rispondi con la versione corretta completa."
                                        )},
                                    ]
                                    try:
                                        _rt_repaired = await asyncio.wait_for(
                                            _active_llm.chat(_rt_fix_msgs, temperature=0.05,
                                                             max_tokens=min(_tok_budget, 4096)),
                                            timeout=20.0,
                                        )
                                        if _rt_repaired and not _rt_repaired.startswith("[LLM"):
                                            answer = _rt_repaired
                                            state.steps.append({
                                                "action": "execution_validator_fix",
                                                "output": f"Runtime error riparato: {_stderr_rt[:300]}",  # S605: 200→300
                                            })
                                            try:
                                                from api.state import increment_stat as _inc_rt2
                                                _inc_rt2("runtime_repaired")
                                            except Exception as _exc:
                                                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                            try:
                                                from api.state import increment_stat as _inc_rrt
                                                _inc_rrt("repair_success_count")  # S453: aggregato riparazioni riuscite
                                            except Exception as _exc:
                                                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                            if on_step:
                                                await _maybe_await(on_step({
                                                    "action": "execution_validator_fix",
                                                    "status": "running",
                                                    "title": "Verifica finale…",
                                                    "explanation": "Verifico che il codice funzioni correttamente",
                                                }))
                                            # S395: GREEN confirmation — re-run repaired code (max 15s)
                                            try:
                                                _green_blks = _re_sh.findall(
                                                    r'```python\s*(.*?)```',
                                                    _rt_repaired,
                                                    _re_sh.DOTALL | _re_sh.IGNORECASE,
                                                )
                                                _green_code = _green_blks[0].strip() if _green_blks else _rt_repaired.strip()
                                                _green_r = await asyncio.wait_for(
                                                    _TR_rt["run_python"]["_fn"](code=_green_code),
                                                    timeout=15.0,
                                                )
                                                _green_rc     = _green_r.get("returncode", 0)
                                                _green_stderr = (_green_r.get("stderr") or "").strip()
                                                if _green_rc == 0 and not _green_stderr:
                                                    try:
                                                        from api.state import increment_stat as _inc_g
                                                        _inc_g("green_confirmed")
                                                    except Exception as _exc:
                                                        _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                                    if on_step:
                                                        await _maybe_await(on_step({
                                                            "action": "execution_validator_fix",
                                                            "status": "done",
                                                            "title": "✓ Codice funzionante",
                                                            "explanation": "Nessun errore rilevato ✓",
                                                        }))
                                                else:
                                                    try:
                                                        from api.state import increment_stat as _inc_gf
                                                        _inc_gf("green_failed")
                                                    except Exception as _exc:
                                                        _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                                    if on_step:
                                                        await _maybe_await(on_step({
                                                            "action": "execution_validator_fix",
                                                            "status": "warning",
                                                            "title": "⚠️ Repair parziale",
                                                            "explanation": "Correzione parziale — potrebbe esserci un errore residuo",
                                                        }))
                                            except Exception:
                                                pass  # GREEN check non bloccante
                                        else:
                                            try:
                                                from api.state import increment_stat as _inc_rtf
                                                _inc_rtf("runtime_failed")
                                            except Exception as _exc:
                                                _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                    except Exception:
                                        try:
                                            from api.state import increment_stat as _inc_rtf2
                                            _inc_rtf2("runtime_failed")
                                        except Exception as _exc:
                                            _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
                                        pass  # repair runtime fallito — usa answer originale
                                else:
                                    if on_step:
                                        await _maybe_await(on_step({
                                            "action": "execution_validator_fix",
                                            "status": "done",
                                            "title": "Codice verificato ✓",
                                            "explanation": "Codice eseguito correttamente ✓",
                                        }))
                        except Exception:
                            pass  # run_python non disponibile — skip gracefully

        # S401: HTML/JS repair loop — rileva blocchi strutturalmente rotti e li ripara (max 1 ciclo, 20s)
        # Copre ciò che il repair Python non tocca: HTML unclosed tags, JS unbalanced braces.
        if answer and not answer.startswith('[LLM') and (
            '```html' in answer.lower() or
            '```javascript' in answer.lower() or
            '```js\n' in answer.lower()
        ):
            import re as _re_web
            _WEB_PATTERNS = [
                (r'```html\s*(.*?)```',              'HTML',        'html'),
                (r'```(?:javascript|js)\s*(.*?)```', 'JavaScript',  'javascript'),
            ]
            _VOID_TAGS = {'area','base','br','col','embed','hr','img','input',
                          'link','meta','param','source','track','wbr'}
            for _wpat, _wname, _wlang in _WEB_PATTERNS:
                _wblocks = _re_web.findall(_wpat, answer, _re_web.DOTALL | _re_web.IGNORECASE)
                if not _wblocks:
                    continue
                _wblk = _wblocks[0]
                _wissues: list[str] = []

                if _wlang == 'html':
                    # Tag bilanciamento
                    _open  = _re_web.findall(r'<([a-zA-Z][a-zA-Z0-9]*)[^>/]*>', _wblk)
                    _close = _re_web.findall(r'</([a-zA-Z][a-zA-Z0-9]*)>', _wblk)
                    _cnt: dict[str, int] = {}
                    for _t in _open:
                        _tl = _t.lower()
                        if _tl not in _VOID_TAGS:
                            _cnt[_tl] = _cnt.get(_tl, 0) + 1
                    for _t in _close:
                        _tl = _t.lower()
                        _cnt[_tl] = _cnt.get(_tl, 0) - 1
                    _unbal = [_t for _t, _c in _cnt.items() if _c != 0]
                    if _unbal:
                        # S594: _unbal[:4]→[:6] — più tag sbilanciati visibili nel report
                        _wissues.append(f"Tag non bilanciati: {', '.join(_unbal[:6])}")
                    if _wblk.count('<script') != _wblk.count('</script>'):
                        _wissues.append('Tag <script> non chiuso')
                    if _wblk.count('<style') != _wblk.count('</style>'):
                        _wissues.append('Tag <style> non chiuso')

                elif _wlang == 'javascript':
                    # Rimuovi commenti e stringhe per conteggio bilanciato
                    _js_clean = _re_web.sub(r'//[^\n]*', '', _wblk)
                    _js_clean = _re_web.sub(r'/\*.*?\*/', '', _js_clean, flags=_re_web.DOTALL)
                    _js_clean = _re_web.sub(r'"[^"\\]*(?:\\.[^"\\]*)*"', '""', _js_clean)
                    _js_clean = _re_web.sub(r"'[^'\\]*(?:\\.[^'\\]*)*'", "''", _js_clean)
                    _br = _js_clean.count('{') - _js_clean.count('}')
                    _pa = _js_clean.count('(') - _js_clean.count(')')
                    if abs(_br) > 0:
                        _wissues.append(f'Graffe sbilanciate ({_br:+d})')
                    if abs(_pa) > 0:
                        _wissues.append(f'Parentesi sbilanciate ({_pa:+d})')

                if not _wissues:
                    continue  # blocco strutturalmente OK — skip

                if on_step:
                    await _maybe_await(on_step({
                        'action':      'execution_validator_fix',
                        'status':      'running',
                        'title':       f'Auto-fix {_wname}',
                        'explanation': "Problemi rilevati nel codice web — correzione in corso",
                    }))

                _web_fix_msgs = [
                    *messages,
                    {'role': 'assistant', 'content': answer},
                    {'role': 'user', 'content': (
                        f'Il codice {_wname} ha problemi strutturali: {"; ".join(_wissues)}.\n'
                        f'Correggi SOLO i problemi strutturali (tag, graffe, parentesi). '
                        f'NON cambiare la logica. Rispondi con la versione corretta completa.'
                    )},
                ]
                try:
                    _web_repaired = await asyncio.wait_for(
                        _active_llm.chat(_web_fix_msgs, temperature=0.05,
                                         max_tokens=min(_tok_budget, 4096)),
                        timeout=10.0,  # S434: 20→10s
                    )
                    if _web_repaired and not _web_repaired.startswith('[LLM'):
                        answer = _web_repaired
                        if on_step:
                            await _maybe_await(on_step({
                                'action':      'execution_validator_fix',
                                'status':      'done',
                                'title':       f'Auto-fix {_wname} completato ✓',
                                'explanation': f"Problemi corretti: {'; '.join(_wissues)}",
                            }))
                except Exception:
                    pass  # repair web fallito — usa answer originale
                break  # un solo blocco per tipo per evitare loop

        # R2 S390: critic rimosso — il Verifier (chain-of-verification) è sufficiente.
        # Il critic consumava 1 chiamata Groq per ogni risposta con codice/math/>800 chars.
        # Rimosso: +3000 req/day Groq liberate, -3-5s su risposte lunghe.

        # S195-Robust: success = risposta reale, non placeholder [LLM ...]
        # S403-FIX: append della risposta completamente riparata (post verifier/goal_verifier/
        # self-healing). Così "\n\n".join(outputs) riflette il testo finale corretto.
        outputs.append(answer)

        # S371: sanitize — rimuove monologue interno prima di restituire al frontend
        final_output = self._sanitize_agent_output("\n\n".join(outputs).strip())
        success      = bool(final_output) and not final_output.startswith("[LLM")
        # Sprint 5 ITEM 13: goal_success/fail counters — mai incrementati prima
        try:
            from api.state import increment_stat as _inc_gs
            _inc_gs("goal_success_count" if success else "goal_fail_count")
        except Exception as _exc:
            _logger.debug("[unified_loop] silenced %s", type(_exc).__name__)  # noqa: BLE001
        if self.memory:
            await self.memory.save_episode("unified_loop", state.goal, final_output[:1000],
                                           success, tags=["fallback"])
        if on_step:
            await _maybe_await(on_step({
                "loop": 2, "action": "fallback",
                "status": "done", "success": success,
                "title": "Completato" if success else "Risposta parziale",
                "explanation": "Risposta elaborata e verificata con successo" if success
                               else "Risposta completata con limitazioni",
            }))
        # S285: mostra provider reale usato al posto del generico "fallback"
        _engine = getattr(self.llm, 'provider_name', None) or 'llm'
        # Sprint 5 ITEM 14: phase_breakdown — medie ultime 10 chiamate per fase
        try:
            from api.state import _TIMING_STORE as _TS
            
            _phase_bd = {k: _avg10(_TS.get(k, [])) for k in
                         ["classify_ms", "plan_ms", "coder_ms", "verifier_ms", "browser_ms"]}
        except Exception:
            _phase_bd = {}
        # GAP-3: rollback atomico se task fallisce con write_file parziali
        # Ripristina i file al contenuto pre-modifica per evitare stato corrotto
        if not success and getattr(self, "_write_snapshots", None):
            try:
                await self._rollback_writes(on_step)
            except Exception:
                pass  # non-fatal — best effort rollback
        return {"success": success, "engine": _engine, "goal": state.goal,
                "steps": state.steps, "errors": state.errors, "output": final_output,
                "phase_breakdown": _phase_bd}

    # ── Entry point (S193) ────────────────────────────────────────────────────