Improve BSpline approximation logic and add debug diagnostics#304

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copilot/fix-spline-rendering-issue

Commits on Jan 25, 2026

Commits on Jan 26, 2026

Fix: Remove incorrect length check that simplified small valid curves to lines

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Update comment to reflect removed length check

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Fix: Filter identical poles when projecting BSpline to 2D

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Fix: Ensure minimum sample points for non-planar spline approximation

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Fix off-by-one error in sample point generation

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Add debug output to GetCashedApproximation for diagnostics

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