docs: add README product screenshots

[projectamazonph]

Summary

• add a visual product tour to the README
• include verified screenshots for the landing, sign-in, and About pages
• add concise captions and meaningful alt text

Validation

• rendered each screenshot from the current checked-out application at 1440×900
• visually inspected all screenshots for blank and error states
• verified every README image path resolves to a committed file
• ran git diff --check

Notes

The public Vercel URL currently serves an unrelated stale InterviewLab build, so these screenshots were captured from the current repository code rather than the deployed site.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
interview-lab	Ready	Preview	Aug 21, 2026 10:00am

[coderabbitai]

Important

• 🔍 Trigger review

This repository does not receive automatic reviews because it has fewer than 10 stars.

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 6bead37c-cc51-4dd4-984b-2b766b46ff4c

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