Bundle the planning core at a871f8f (develop after PR #278) as a frozen
fixture and compare it with the current engine on 5,000 seeded random
requests. Outcomes, stable explanations, explanation errors and final-state
snapshots must be strictly deep-equal. Requests cover obligations,
preferences, IF_THEN and TIME_WINDOW rules, earned entitlements, composed
optimization rules, declared days, year boundaries and public holidays.
Refs #280
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
