fix: resolve URL sync array corruption and btoa emoji crash

[divyansha12]

Hey @magic-peach

Description

This PR resolves two critical URL syncing and sharing bugs that resulted in data corruption and application crashes:

1. URL Sync Data Corruption: Added an exclusion for textOverlays inside the useEffect URL auto-sync loop in useVideoEditor.ts. This prevents the complex array from being stringified into "[object Object]", pushing corrupt data into the browser URL and crashing the app upon refresh.
2. Copy Link Emoji Crash (btoa failure): Updated the encodeRecipe and decodeRecipe methods to safely parse UTF-8 characters by wrapping the JSON string with encodeURIComponent and escape before passing it to btoa(). Replaced the direct btoa call in VideoEditor.tsx with the newly exported encodeRecipe utility, allowing users to safely share links containing emojis without triggering a fatal DOMException.

Related Issue

Closes #1468

Type of Contribution

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

Participant Info

• GitHub username: divyansha12
• Contribution level (Beginner/Intermediate/Advanced): Intermediate

Screen Recording

How to record: run bun run dev → open http://localhost:3000 → demonstrate the full working flow of your change, including any edge cases.

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• Any OS: Loom (free screen recorder, great for sharing)

Recording / Loom link: [PASTE YOUR LOOM OR VIDEO LINK HERE]

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 above (required for UI/feature/design changes)

[vercel]

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[github-actions]

✅ PR Format Check Passed — @divyansha12

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, @divyansha12!

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

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

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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! 🎉

[divyansha12]

Hi @magic-peach, PR is ready for review. The build check is pending Vercel authorization from your side. Let me know if anything needs changing!