Added support for KiCad explicit net names containing "/" characters

[xdylanm]

Modified the PREFIX_AND_NODES_RGX regex, fixes #324

[Copilot]

🟡 Changes recommended

The regex update should be accompanied by a regression unit test, and the current character class has an unescaped - that unintentionally broadens the allowed node characters.

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Pull request overview

This PR updates the SPICE component parsing regex generator to accept KiCad explicit net names that include / characters (e.g. /Vout), addressing the UnrecognizedSyntaxError reported in issue #324.

Changes:

• Extend PREFIX_AND_NODES_RGX node-name character classes to include / for both quoted (« ») and unquoted node lists.

File summaries

File	Description
spicelib/editor/spice_utils.py	Expands the node-token regex to allow / in net names so KiCad-style explicit net labels parse correctly.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 2
• Review effort level: Lite

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[xdylanm]

After making the change to the regex, I've re-run the test suite locally. All pass, but many tests are skipped as I'm running on Linux. Ideally the full suite could be run before merging.

[nunobrum]

I'll make the test. Exceptionally I'll merge directly into main and make the correction there.