Add GitHub Actions to test package exports with CSS @import validation and fix runtime dependencies#1244

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Copilot wants to merge 7 commits intomainfrom

copilot/fix-c0a2e786-cb81-4a11-a10d-2c3231568c44

Commits on Aug 5, 2025

Initial plan
Copilot
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Initial exploration and planning for exports testing action

Copilot
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lukasoppermann
committed
Add exports field and fix dependencies for package exports testing

Copilot
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lukasoppermann
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Fix test file path and add gitignore for package tarball

Copilot
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lukasoppermann
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Fix package tarball filename pattern in test_exports workflow

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lukasoppermann
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Update test_exports.yml
lukasoppermann
authored
Improve CSS export testing with actual @import statements using PostCSS

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lukasoppermann
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