Adds a README, a Contribute button to both pages, and real-time LiDAR object detection reporting — showing the detected object's shape and color as the beam sweeps.

README

• New README.md covering features, controls, component reference, LiDAR detection behavior, and a contributing guide.

Contribute Button

• index.html: Added alongside "Enter System" in the hero section and as a footer link.
• home.html: Added to the bottom of the Toolbox sidebar; opens the GitHub repo in a new tab.

LiDAR Detection Panel (home.html)

• Blocks now carry a randomly assigned shape (square | circle | triangle), rendered accordingly in the canvas.

• LiDAR beam range extended 70→100px.

• getLidarDetection() casts the beam in world coordinates using shape-aware intersection per frame:

  • Square → segment-rect intersection
  • Circle → point-to-segment distance vs. radius
  • Triangle → edge-segment intersection against all 3 sides

• New Detection Panel in the right sidebar updates in real time:

  State	Display
  No LiDAR installed	LiDAR not installed
  LiDAR active, beam clear	No objects detected
  Beam intersects object	● OBJECT DETECTED / Shape / Color

• getColorName() maps HSL hue to human-readable names (Red, Orange, Yellow, Green, Teal, Cyan, Blue, Purple, Magenta, Pink).

• Detection state resets correctly on LiDAR add/remove and Reset All.

Screenshot

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