chore: playground

[vachmara]

🔗 Related Issue

N/A

❓ Type of Change

• 📖 Documentation (docs, README, or comments)
• 🐞 Bug fix (non-breaking fix for an issue)
• 👌 Enhancement (improvement to existing functionality)
• ✨ New feature (adds new functionality)
• 🧹 Chore (build, tooling, dependencies)
• ⚠️ Breaking change (affects existing usage)

📚 Description

This pull request updates the playground environment variable naming convention and makes related adjustments to improve clarity and consistency. It also modifies workspace configuration and dependency references.

Environment variable renaming and usage updates:

• Changed the environment variable from ACCESS_TOKEN to API_KEY in .env.example, README.md, and in the code that instantiates Rettiwt, ensuring consistent naming throughout the playground. [1] [2] [3]

Project and dependency configuration:

• Updated the rettiwt-api dependency reference in playground/package.json to use a local file path instead of a workspace reference.
• Removed the workspaces field from the root package.json, simplifying the project structure.

📝 Checklist

• Issue/discussion linked above.
• Documentation updated (if needed).
• Code follows project conventions and ESLint rules.
• No sensitive data or credentials are included.