Add blog section and messaging vs skills article

[khaliqgant]

• Create blog index page at /blog with all posts
• Create individual blog post pages with markdown rendering
• Add blog section to landing page showing recent posts
• Add first blog post: "Real-Time Messaging vs Skills" analysis
• Include responsive styles for blog components

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📊 6 files reviewed • 3 high risk • 5 need attention

🚨 High Risk:

• src/dashboard/app/blog/[slug]/page.tsx — Critical logic and edge case handling related to blog post data retrieval and input validation.

⚠️ Needs Attention:

• src/dashboard/app/blog/[slug]/page.tsx — Significant code changes without accompanying test coverage raise concerns about stability and robustness.

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