Replace hardcoded 0 with CurveOffsetCornerStyle.NONE enum in curve offset method

[Copilot]

• Import Rhino.Geometry module at the top of the file
• Replace the last zero parameter in Offset call with proper enum Rhino.Geometry.CurveOffsetCornerStyle.NONE
• Apply review feedback to use NONE constant directly
• Add changelog entry
• Verify the change with linting (ruff and black)
• Run security check with CodeQL (no alerts found)

Summary

Successfully replaced the hardcoded 0 parameter in the Offset method call with the proper enum Rhino.Geometry.CurveOffsetCornerStyle.NONE.

Changes Made

• Added import Rhino # type: ignore at the top of the file
• Created a corner_style variable using Rhino.Geometry.CurveOffsetCornerStyle.NONE
• Replaced the hardcoded 0 with the corner_style variable in the Offset call
• Added entry to CHANGELOG.md under "Unreleased > Changed" section

Implementation Note

The enum member is accessed as NONE (uppercase) rather than None to avoid Python keyword conflicts. This pattern is consistent with other Rhino enum usage in the codebase (e.g., PipeCapMode.NONE, IsoStatus.NONE).

Security Summary

No security vulnerabilities were found in the changes.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[gonzalocasas]

@copilot apply review feedback

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.19%. Comparing base (587ff27) to head (46ad041).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1495      +/-   ##
==========================================
- Coverage   62.21%   62.19%   -0.03%     
==========================================
  Files         208      208              
  Lines       22437    22437              
==========================================
- Hits        13960    13955       -5     
- Misses       8477     8482       +5     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[gonzalocasas]

@copilot add an entry to the changelog

[Copilot]

@copilot add an entry to the changelog

Added changelog entry under "Unreleased > Changed" section (commit: 46ad041 and following)