docs: add animated GIF demos to README

[srinidhi-2006-bit]

Summary

Added animated GIF demos to the README to visually showcase the DevTrack UI and interactions.

Closes #1059

Type of Change

• Documentation update

Changes Made

• Added dashboard walkthrough GIF
• Added UI interactions GIF
• Updated README demo section with accessible alt text

How to Test

1. Open README.md
2. Verify both GIFs render correctly
3. Confirm assets load from public/assets/gifs

Checklist

• Linked issue in summary
• Self-reviewed the diff

[vercel]

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[github-actions]

GSSoC Label Checklist 🏷️

@Priyanshu-byte-coder — please apply the appropriate labels before merging:

Difficulty (pick one):

• level:beginner — 20 pts
• level:intermediate — 35 pts
• level:advanced — 55 pts
• level:critical — 80 pts

Quality (optional):

• quality:clean — ×1.2 multiplier
• quality:exceptional — ×1.5 multiplier

Validation (required to score):

• gssoc:approved — counts for points
• gssoc:invalid / gssoc:spam / gssoc:ai-slop — does not score

Type labels (type:*) are auto-detected from files and title. Review and adjust if needed.
Points formula: (difficulty × quality_multiplier) + type_bonus

[srinidhi-2006-bit]

Thanks for reviewing the PR.

The failing Playwright smoke test appears to be unrelated to the README/GIF documentation changes in this PR, since build, lint, and type-check are all passing successfully.

The PR only adds README demo GIFs and static assets without modifying application logic or E2E flows.

[Priyanshu-byte-coder]

Playwright smoke tests are failing on this PR. Check the CI logs, fix failing tests, then push an update. Cannot merge while tests are red.

[Priyanshu-byte-coder]

Playwright smoke tests are failing on this PR. Please check the E2E test failures and fix them before merging.

[srinidhi-2006-bit]

The failing Playwright smoke tests appear to be unrelated to this documentation-only PR.

I verified locally that:

• npm run lint passes
• npm run type-check passes
• npm run build passes

The current E2E failures are caused by outdated Playwright assertions expecting older DevTrack UI/routes/components (dashboard redirects, landing page headings, footer elements, etc.), not by the README/GIF documentation changes introduced in this PR.

[Priyanshu-byte-coder]

CI is failing on this PR. Please fix the failing checks before this can be merged.

[srinidhi-2006-bit]

done