## Summary
Adds a CONTRIBUTING.md file to help new contributors get started.
## Contents
- Quick start setup
- Finding issues to work on (label guide)
- Branch naming conventions
- Development workflow (fork, branch, commit, PR)
- Project structure overview with key file paths
- Styling conventions and file size guidelines
- i18n workflow for adding translations
- Code principles (KISS, DRY, single responsibility)
This gives new contributors everything they need in one place to start
contributing effectively.
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