feat(Port): pass highlightColor from pinAttributes to pcb_port

[bimakw]

Summary

This PR enables the highlightColor feature for pinout diagrams by passing the color value from pinAttributes to pcb_port:

• Add _getPinoutHighlightColor() method: Reads highlightColor from pinAttributes configuration
• Include highlight_color in pcb_port: Pass the color value during both initial and update renders

Test Plan

• chip-board-pinout.test.ts passes
• Tested with circuit-to-svg to verify color rendering

Related

• Part of Pinout Diagram Improvements tscircuit#895 (Pinout Diagram Improvements)
• Companion PR: feat(pinout): add highlightColor support and remove component gray boxes circuit-to-svg#482

Usage Example

<chip
  name="U1"
  footprint="soic8"
  pinLabels={{ pin1: "VCC", pin2: "GND" }}
  pinAttributes={{
    VCC: { includeInBoardPinout: true, highlightColor: "#ff0000" },
    GND: { includeInBoardPinout: true, highlightColor: "#00ff00" },
  }}
/>

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Project	Deployment	Review	Updated (UTC)
tscircuit-core-benchmarks	Ready	Preview, Comment	Jan 17, 2026 3:58pm

[bimakw]

@seveibar @imrishabh18 - This PR is ready for review. CI is passing. This implements the highlightColor support in Port.ts for pinout diagrams (issue #895). Companion PR: tscircuit/circuit-to-svg#482

[rushabhcodes]

LGTM

[bimakw]

Hey @seveibar, this PR has been approved by @rushabhcodes and all CI checks are passing. Ready for merge when you have a moment! 🙏

[github-actions]

This PR has been automatically marked as stale because it has had no recent activity. It will be closed if no further activity occurs.

[github-actions]

This PR was closed because it has been inactive for 1 day since being marked as stale.