The drawn coastline is a family of curves indexed by rung (warp cutoff admits more octaves at finer rungs), so no single authoritative server- side waterline exists — reconciliation is a presentation-frame operation at the draw site; the skeleton stays rung-independent. Clip retires into T-1170's coast-terminating courses. Tickets: T-1172 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>