Trailcode/Enhance Usage Guide Documentation for Sketch Tools

[trailcode]

Enhance Usage Guide Documentation for Sketch Tools

Summary

This PR adds comprehensive documentation for several sketch creation tools that were previously only mentioned briefly in the usage guide. The documentation follows the same detailed format as existing tool sections (like Line Edge and Circle tools) and includes features, step-by-step instructions, keyboard shortcuts, tips, and technical details.

Changes Made

New Documentation Sections Added

1. Multi-Line Edge Tool (#### Multi-Line Edge Tool)

   • Documents the continuous edge creation tool for drawing multiple connected line segments
   • Explains the workflow: clicking multiple points to create a chain, right-click to finalize
   • Includes comparison with single line edge tool

2. Arc Segment Creation Tool (#### Arc Segment Creation Tool)

   • Documents the three-point arc creation tool
   • Explains how to create circular arcs by defining start, middle, and end points
   • Includes comparison with circle tool

3. Rectangle and Square Creation Tools (#### Rectangle and Square Creation Tools)

   • Square Tool: Documents center point + edge midpoint creation method
   • Rectangle Tool (Two Points): Documents opposite corners method
   • Rectangle Tool (Center Point): Documents center point + corner method
   • Includes comparison between all three rectangle/square tools

4. Slot Creation Tool (#### Slot Creation Tool)

   • Documents the three-point slot creation tool
   • Explains how the radius point (third click) defines the slot's cross section
   • Includes technical details about the slot's construction (two arcs + two straight edges)
   • Includes common use cases

Documentation Structure

Each new section includes:

• Tool icon and description
• Features list
• Step-by-step "How to use" instructions
• Point order explanations (where applicable)
• Keyboard shortcuts
• Tips and best practices
• Technical details (where relevant)
• Comparisons with related tools

Files Changed

• usage.md: Added ~272 lines of documentation across 4 major sections

Testing

• Documentation reviewed for accuracy against source code
• All tool descriptions match actual implementation behavior
• Links and cross-references verified
• No linting errors

Related

This addresses the need for comprehensive documentation of sketch creation tools that were previously only listed without detailed instructions.