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Alexander Yue
cbe07e14d3
Agent(ultrafast=True) assigns its settings unconditionally, so passing an override alongside it did nothing: Agent(ultrafast=True, use_vision=True) ran without vision. Every ultrafast_* ablation profile was built that way and was therefore a silent duplicate of the preset, which invalidates the vision, thinking and history comparisons taken from them. The preset now lives in ULTRAFAST_AGENT_SETTINGS and the flag applies exactly that dict, so an ablation spreads it and overrides the one key under test. Two tests pin the behaviour: the flag and the spread must agree, and a spread override must survive. Adds ultrafast_memory and ultrafast_noloop profiles for the looping seen on real tasks, and fixes demo.py, which combined flash_mode with flash_memory=False and no flash_thinking -- leaving 'action' as the only output field, so the model planned a multi-item task with nowhere to reason.