Fix the Auto-Tangents node for linear polylines, and track colinear handles in manipulator data

[Keavon]

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[cubic-dev-ai]

No issues found across 1 file

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
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[gemini-code-assist]

Code Review

This pull request refactors the auto_tangents function in vector_nodes.rs to improve clarity and handle path endpoints more effectively. Key changes include renaming variables for better readability, implementing zero-length cubic handles for open path endpoints, and adding logic to track and mark auto-tangented points as colinear. A review comment identifies redundant logic in the segment index calculation for colinear manipulators, noting that endpoint checks for open paths are unnecessary due to prior filtering.