1772d94558
Six captures across one healthy run: 12 thread states stable, 13 vary. Every thread previously reported as a freeze signature is in the VARIES set -- including T68/T69, which I had kept as 'what reproduces across both freezes'. They park and unpark during ordinary play, landing on the same objects they hold when frozen, so seeing them parked while frozen is not evidence. Net: no thread-level freeze signature has survived. Both frozen diffs are consistent with healthy variation, and one-sample-per-state was never capable of separating them. Still standing: the 12 stable threads hold the same object in all six captures and none of them moved in either frozen capture -- so 'not a whole-emulator stall' survives, now resting on the stable set being undisturbed rather than on a count of unchanged threads. Also noted: gdb thread numbers are not comparable across runs (this run has T132-T142, earlier runs had T104-T106), so future cross-run work must key on the object address or guest thread id.