Add testing framework for meshery.io

[hk2166]

Current Behavior

The meshery.io website currently has no testing infrastructure. The package.json test script outputs "Error: no test specified" and there are no unit tests, HTML validation, or CI workflows for testing.

Desired Behavior

Add a testing framework to improve code quality and catch issues before deployment:

JavaScript Unit Testing: Add Jest to test utility functions in blog-search.js (slugify, escapeRegex, highlightText, debounce, search functions)
HTML/Link Validation: Add html-proofer gem to validate internal links and HTML structure
CI Integration: Add GitHub Actions workflow to run tests automatically on PRs
Makefile Targets: Add convenient commands like make test, make test-js, make test-html, make setup

This would help catch bugs in search functionality and broken links before deployment, and improve the contributor experience.

Screenshots / Mockups
N/A - This is a developer tooling enhancement.

I'd be happy to work on this if a maintainer approves. Please assign this to me if it looks good!

[Devnil434]

can I work on this issue?

[deepeshbind]

Hi @Rajesh-Nagarajan-11 I'd love to work on this issue. Can I be assigned? I plan to add Jest for unit testing blog-search.js, a GitHub Actions CI workflow, and Makefile targets as described.

[Bhumikagarggg]

@Devnil434 @deepeshbind who is available for this issue?

[varsha-0007]

hey @Rajesh-Nagarajan-11, can I please take this up???

[hk2166]

@Bhumikagarggg I have already worked on it and would really interested to Raise a PR if assigned