docs: update README with accurate metrics and feature details

[bniladridas]

Summary

• Update test coverage percentages to current values (43.83% statements, 26.08% branches)
• Correct build size (133.05 kB JS)
• Update vulnerability count (2 moderate)
• Add collapsible details sections for each feature in the Features list

[gemini-code-assist]

Summary of Changes

Hello @bniladridas, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on enhancing the accuracy and detail of the project's README.md file. It updates key project metrics such as test coverage, build size, and vulnerability counts to their current values. Additionally, it improves the readability and comprehensiveness of the features section by adding interactive collapsible details for each listed feature.

Highlights

• Metrics Update: Updated test coverage percentages to current values (43.83% statement, 26.08% branch) and corrected the reported JavaScript build size to 133.05 kB.
• Vulnerability Count: Revised the NPM vulnerability count from 8 (3 moderate, 5 high) to 2 moderate severity issues, along with updated advice for npm audit fix --force.
• Feature Details: Introduced collapsible detail sections for each feature in the README, providing more in-depth explanations for better clarity.

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[gemini-code-assist]

Code Review

This pull request updates the README.md file with current project metrics and adds collapsible sections to the features list for better organization. The changes are well-intentioned and improve the documentation. I've provided a couple of suggestions to fix HTML indentation and ensure a list renders correctly within a <details> tag.