Add React Whiteboard Calendar component for crew scheduling and multi-day event visualization

[widlestudiollp]

Overview

This PR adds a React-based whiteboard calendar component for Retool, focused on crew scheduling and multi-day event visualization.

The component displays events across a timeline layout with crews as rows and dates as columns, making it easier to track assignments, overlaps, and availability at a glance.

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What’s included

• Week, 2-week, and month views
• Support for multi-day events spanning across date columns
• Crew-based grouping (each row represents a crew/resource)
• Automatic stacking of overlapping events using lane logic
• Dynamic color assignment per crew for better visual distinction
• Click handlers for both events and empty cells
• Timezone-aware date handling

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Implementation details

• Events are normalized into a start index and span relative to the visible week
• A lane allocation approach is used to avoid visual overlap between events
• Layout is built using a grid for structure and absolute positioning for precise event placement
• Rendering is optimized to only process visible date ranges

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Use cases

• Crew and workforce scheduling
• Job or task planning across multiple days
• Resource allocation dashboards
• Operational timelines

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Notes

• The component is designed to handle overlapping and long-running events without UI breakage
• Works with dynamic data passed from Retool queries or state
• No external UI libraries are used to keep it lightweight and customizable

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Preview

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Checklist

• Component tested inside Retool
• Verified layout across different view modes
• Confirmed event rendering and stacking behavior