feat: add accessible, theme-aware SVG brand logo to header layout (#809)

[trivikramkalagi91-commits]

Description
This PR addresses the enhancement request to introduce a modern, lightweight brand logo to the website header layout to improve the application's visual identity.

• Created an optimized, responsive inline SVG component (BrandLogo.tsx).
• Integrated the logo directly to the left of the "REFRAME" text inside the main layout (src/app/layout.tsx) using a vertically centered flexbox container (flex items-center gap-2).
• Structured the SVG properties (currentColor, var(--surface)) to natively support full light/dark theme toggles.
• Appended explicit accessibility roles to satisfy code standards.

Related Issue
Closes #809

Type of Contribution

• New feature
• GSSoC contribution

Participant Info

• GitHub username: trivikramkalagi91-commits
• Contribution level: Beginner

Screenshot
BEFORE:

AFTER:

Screen Recording:

Screen.Recording.2026-05-20.230544.mp4

Checklist

• I have read the contribution guidelines
• My changes follow the project structure
• My changes work as expected
• New interactive elements have aria-label / accessible names
• No console.log statements left in
• This PR is related to a valid issue

[vercel]

@trivikramkalagi91-commits is attempting to deploy a commit to the magic-peach1's projects Team on Vercel.

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[github-actions]

✅ PR Format Check Passed — @trivikramkalagi91-commits

Basic format checks passed. A maintainer will review your code changes.

This does not mean the PR is approved — it just means the format is correct.

[github-actions]

👋 Thanks for your PR, @trivikramkalagi91-commits!

Welcome to Reframe — a browser-based video editor built for everyone 🎬

🟠 GSSoC'26 PR detected — thanks for contributing under GirlScript Summer of Code 2026!

What happens next

1. 🤖 Automated checks — build & TypeScript typecheck will run automatically
2. ✅ Vercel preview — a preview deployment will be created (requires maintainer authorization for fork PRs)
3. 👀 Code review — a maintainer will review your changes
4. 🚀 Merge — once approved, your PR will be merged!

Quick checklist

• PR title follows Conventional Commits (e.g. feat: add dark mode)
• Linked the issue this PR closes (e.g. Closes #123)
• Tested the changes locally (bun run dev)
• Build passes (bun run build)

Useful links

• 📖 CONTRIBUTING.md
• 🐛 Open Issues
• ⭐ Star the repo to support the project!

Happy coding! 🎉

[trivikramkalagi91-commits]

Hi @magic-peach, the core build, linting, and typecheck workflows have passed successfully. Could you please authorize the Vercel preview deployment and review the layout changes when you have a moment? Thank you!