Add involute to Path info

[benjamaan476]

The circular involute sketch segment was using ToPoint as its path type. This adds a specific involute path type

[vercel]

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Name	Status	Preview	Updated (UTC)
modeling-app	✅ Ready (Inspect)	Visit Preview	Apr 25, 2025 2:57pm

[qa-wolf]

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[graphite-app]

The calculation (end_radius * end_radius - start_radius * start_radius).sqrt() / start_radius will produce a runtime error if end_radius < start_radius, as it would attempt to take the square root of a negative number. This is particularly problematic when the reverse flag is set to true, which suggests the path should go from end_radius to start_radius. Consider adding a validation check or using abs() to ensure the calculation is always performed on a positive value.

Suggested change

	let angle = (end_radius * end_radius - start_radius * start_radius).sqrt() / start_radius;
	0.5 * start_radius * angle * angle
	let angle = ((end_radius * end_radius - start_radius * start_radius).abs()).sqrt() / start_radius;
	0.5 * start_radius * angle * angle

Spotted by Diamond

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #6448 will not alter performance

_{Comparing ben/involute_path (3fcdf84) with main (5c0ca52)}

Summary

✅ 54 untouched benchmarks

[codecov]

Codecov Report

Attention: Patch coverage is 48.14815% with 28 lines in your changes missing coverage. Please review.

Project coverage is 85.18%. Comparing base (0ef1483) to head (3fcdf84).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
rust/kcl-lib/src/execution/geometry.rs	13.33%	13 Missing ⚠️
rust/kcl-lib/src/std/extrude.rs	0.00%	9 Missing ⚠️
rust/kcl-lib/src/std/args.rs	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6448      +/-   ##
==========================================
- Coverage   85.26%   85.18%   -0.09%     
==========================================
  Files         109      109              
  Lines       47021    47074      +53     
==========================================
+ Hits        40092    40098       +6     
- Misses       6929     6976      +47     

Flag	Coverage Δ
rust	85.18% <48.14%> (-0.09%)	⬇️

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