test(useGlowEffect): verify dark and light color scheme contrast visual cohesion (#4501)

[atharv96k]

🧩 Background

This PR addresses Issue #4501, focusing on establishing robust, isolated unit and integration validation checking targeting Dark and Light Prefers-Color-Scheme Visual Cohesion inside the styling hook layer of hooks/useGlowEffect.ts.

🎯 Objective

Introduces a brand-new, dependency-free test file hooks/useGlowEffect.theme-contrast.test.ts to ensure that active background styles, shadow parameters, and text layer contrasts satisfy standard WCAG parameters under dual-theme shifts without introducing environment-dependent test execution drops.

🛠️ Implementation Details

• Dual Theme Mocking: Sets up parallel evaluation pipelines for both dark and light configurations inside localized runtime state profiles.
• Color Adaptive Styling: Confirms core variables shift structural classes gracefully based on context parameters.
• Contrast Ratio Verification: Asserts color setups fulfill semantic contrast minimum limits safely ($\ge 4.5:1$).
• Tailwind Utility Checking: Validates premium lighting style descriptors (shadow-glow-dark, shadow-glow-light) register smoothly.
• Layer Breakdown Protection: Verifies underlying transparency options protect foreground context text layers against clipping boundaries.

✅ Definition of Done

• 5 isolated test cases created and fully validated.
• vitest run useGlowEffect.theme-contrast passes perfectly (5/5).
• npx tsc --noEmit runs completely clean with zero type errors.
• npm run lint clears with 0 errors across target files.

Fixes #4501

[atharv96k]

@Aamod007 @JhaSourav07 PR is ready for #4501

[Aamod-Dev]

Thanks for putting this together. The code looks clean and solves the issue effectively.

Looks solid. I'll go ahead and approve.

[github-actions]

🎉 Congratulations @atharv96k! Your PR has been successfully merged. 🚀

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[Aamod-Dev]

Review Summary
Removed extra type labels ( ype:design) to strictly meet the rule of exactly one type label ( ype:testing retained).