Replace placeholder formula with tier-based algorithm modeled after
tag_from_second and tag_from_third. Uses self.running + aggression_mod
(abs deviation from neutral) for adjusted_running, then brackets into
three min_safe tiers (4/6/8), with a ±2 adjustment for 2-out and 0-out
situations respectively.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
