Is this related to an existing part of the documentation?

• Yes, it is related to an existing section

What needs to be updated?

✨ Proposed Changes

Fill critical documentation gaps to improve onboarding and collaboration:

• Add CONTRIBUTING.md and CODE_OF_CONDUCT.md
• Create CHANGELOG.md (semantic, unreleased section)
• Add API docs (OpenAPI link and usage examples)
• Write development workflow guide (setup, scripts, tests)
• Complete deployment instructions (Docker, env, services)

📋 Additional Context

Relevant Documentation Link (if any)

No response

Record

• I agree to follow this project's Code of Conduct
• I want to work on this update