feat: Support nested expressions in vals#825

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copilot/fix-ec3b807e-0e3d-4f88-8eef-684cd775062e

Commits on Sep 29, 2025

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Implement nested expressions support

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yxxhero
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Commits on Oct 1, 2025

Fix linter issues: fieldalignment for test structs

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yxxhero
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Fix regex to handle trailing + correctly while supporting nested expressions

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yxxhero
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