Hydra effect acquired!

Stop evolution now works. Run visualize_pp_evolution.py to see the hydra effect at play

Author: StormKoper

models/CA.py

@@ -286,11 +286,7 @@ def run(self, steps: int, stop_evolution_at: Optional[int] = None, snapshot_iter
 			if stop_evolution_at is not None and (i + 1) == int(stop_evolution_at):
 				# mark evolution as stopped; do not erase evolve metadata so
 				# deterministic inheritance can still use parent values
-				try:
-					self._evolution_stopped = True
-				except Exception:
-					# best-effort: ignore if attribute cannot be set
-					pass
+				self._evolution_stopped = True
 
 	def visualize(
 		self,

scripts/visualize_pp_evolution.py

@@ -35,7 +35,7 @@ def main():
 
     # Run the simulation (ensure the plot stays open afterwards)
     try:
-        pp.run(2500)
+        pp.run(2500, stop_evolution_at=1000)
     finally:
         # Block and show the final figure so the user can inspect it.
         # Turn off interactive mode (visualize() enabled it) and show blocking.