## Context Testing docs, invariants, and E2E for TimeArena v2. Parent epic: #238. ## Relevant files - `docs/testing/invariants-and-business-logic.md` - `docs/testing/manual-qa-checklists.md` - `docs/testing/e2e-anvil.md` - `.cursor/skills/yieldomega-guardrails/SKILL.md` ## Acceptance criteria - [ ] New `INV-TIME-ARENA-*` invariant IDs for timers, CRED, prizes, XP, WarBow epochs - [ ] Retire or archive TimeCurve invariant sections - [ ] E2E specs renamed `e2e/anvil-arena-*.spec.ts`; pay-mode testids updated - [ ] Manual QA checklist for multi-timer, CRED claim, wallet modal ## Verification checklist - [ ] CI green: contracts + indexer + frontend tests - [ ] Maintainer review of spec ↔ test map