Add click-to-inspect object labels for canvas rendering

[seveibar]

Summary

• hide canvas labels by default, including inline arrow labels, unless explicitly enabled
• add an Enable Object Interation debug toggle that opens a dialog when a labeled canvas object is clicked
• add shared canvas hit-testing for points, lines, arrows, polygons, circles, rects, and infinite lines
• cover the new hit-testing behavior with targeted tests

Testing

• bun test
• bun run build

[vercel]

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Project	Deployment	Actions	Updated (UTC)
graphics-debug	Ready	Preview, Comment	Apr 13, 2026 5:58pm

[tscircuitbot]

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PR Rating: ⭐⭐⭐
Impact: Major

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