docs: add CLAUDE.md with codebase overview for AI assistants

[NagariaHussain]

Covers tech stack, project structure, commands, code style,
architecture, key files, conventions, and CI/CD setup.

Summary by CodeRabbit

• Documentation
  • Added comprehensive project documentation covering technical architecture, setup, code conventions, and development workflow.

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[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

A new documentation file CLAUDE.md was added, providing comprehensive project information including technology stack, architecture, conventions, file structure, and deployment setup for the Hazelnode project. No code changes were introduced.

Changes

Cohort / File(s)	Summary
Documentation CLAUDE.md	New documentation file (+99 lines) covering tech stack, project structure, architecture, code conventions, CI/CD setup, and deployment guidelines

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A guide for the curious and keen,
Where architecture and docs convene,
Hazelnode's blueprint, clear and bright,
Claude's compiled wisdom, oh what a sight!
📚✨

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📜 Recent review details

Configuration used: defaults

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 801058f and 25781fd.

📒 Files selected for processing (1)

• CLAUDE.md

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