feat: Add Native Video Sharing via Web Share API (#925)

[trivikramkalagi91-commits]

Description

This PR introduces native system video sharing functionality as a client-side progressive enhancement on the export success screen, positioned right next to the local disk download operations.

Related Issue

Closes #925

Type of Contribution

• Bug fix
• New feature
• Documentation update
• GSSoC contribution

Participant Info

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

Screen shots:

BEFORE:

AFTER:

Screen Recording:

Screen.Recording.2026-05-22.175919.mp4

Checklist

• I have read the contribution guidelines
• My changes follow the project structure
• I have tested my changes in Chrome, Firefox, and Safari
• bun run lint passes (no ESLint errors)
• bunx tsc --noEmit passes (no TypeScript errors)
• New interactive elements have aria-label / accessible names
• No console.log statements left in
• This PR is related to a valid issue
• Screen recording attached below

[vercel]

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

A member of the Team first needs to authorize it.

[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

I have completed the implementation for the Web Share API feature and all core checks (Build, Lint, and Type Check) are passing perfectly.

Could you please review the changes and authorize the Vercel preview deployment when you have a moment? If everything looks good, please merge it under the GSSoC'26 program. Thank you!