ab5ec2e2e2
Implement shared row highlighting for executive meetings by adding a `rowColor` field to the database schema and API, and migrating existing per-device colors to the new shared field. Replit-Commit-Author: Agent Replit-Commit-Session-Id: 77cfe984-2c65-4152-bb7a-0df28274fe66 Replit-Commit-Checkpoint-Type: full_checkpoint Replit-Commit-Event-Id: 273accfc-a301-41b9-bd20-c121cb4e79c7 Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/c3c252e4-c83d-40ca-9fff-99a3ea60701e/77cfe984-2c65-4152-bb7a-0df28274fe66/g7BgHDL Replit-Helium-Checkpoint-Created: true