Bounty: Dead Code Cleanup and Code Formatting (React)

[hinzga]

Closes #55

Summary

• Ran ESLint/Prettier formatting across the React/TypeScript source files touched by the existing lint configuration
• Removed several clear unused imports, variables, an empty props interface, and an unused YouTube helper
• Removed the duplicate plugins key from tailwind.config.js while preserving the custom scrollbar utilities and forms plugin

Verification

• npm install --ignore-scripts
• npm run lint (passes with existing warnings for any types and legacy unused variables, 0 errors)
• npm run build
• npm test -- --run

Note: a regular npm install attempts to build node-datachannel and fails in my local Node 24 environment. Installing with scripts skipped allowed lint/build/test verification for this frontend cleanup.

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