vinihcrosaandClaude Sonnet 4.6
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Full spec (7 requirements, P1–P3) and architecture design for the instructor scenario creation flow: area selection, map view, vessel placement with drag, heading input, and simulation start/stop. Key decisions: Leaflet + OSM tiles, equirectangular projection for lat/lng↔meters, separate useScenarioStore from useSimulationStore, POST /scenarios before starting the worker. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>