docs: improve README formatting and add support sections

[gkorland]

Summary

• Cherry-picked formatting improvements from Update README.md #472 (which is now outdated after the backend merge)
• Centered header with professional layout and value proposition tagline
• Added environment variables reference table
• Added Contributing, License, and Support sections
• Fixed GitHub Issues link (was pointing to GraphRAG-SDK)

Context

PR #472 proposed a full README rewrite, but was created before the code-graph-backend merge and its setup instructions are no longer accurate. This PR extracts only the formatting and structural improvements that are still valuable.

Test plan

• Verify README renders correctly on GitHub

Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com

Summary by CodeRabbit

Documentation

• Enhanced header with improved tagline, centered layout, Discord badge, and product showcase image
• Added new Project Structure section with detailed codebase overview
• Introduced environment variables configuration table with default values for setup reference
• Reorganized documentation with new Support section including GitHub Issues, Discord, Documentation links, and email contact

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Project	Deployment	Actions	Updated (UTC)
code-graph	Error		Mar 10, 2026 10:48am

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: e39b400f-b590-4068-8e92-ae9d8a7e922e

📥 Commits

Reviewing files that changed from the base of the PR and between 8d3bf7d and 63cb8dc.

📒 Files selected for processing (1)

• README.md

📝 Walkthrough

Walkthrough

The README.md was restructured with an enhanced header featuring a new tagline, Discord badge, and product GIF. Environment variable configuration table was added. Community section was renamed to License, and a new Support section was introduced with relevant links.

Changes

Cohort / File(s)

Summary

Documentation & Header README.md

Enhanced header with new tagline, Discord badge, and product GIF. Added environment variable table documenting OPENAI_API_KEY, SECRET_TOKEN, FALKORDB_HOST, and FALKORDB_PORT with default values. Restructured sections: renamed Community to License, added new Support section with GitHub Issues, Discord, Documentation links, and contact email. Added horizontal rule and centered star prompt at end. Minor formatting adjustments throughout.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 Hop, hop, the docs now shine so bright,
With badges and gifs, what a lovely sight!
Structured with care, variables in place,
Discord and support links embrace the space! ⭐

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: improving README formatting and adding support sections, which aligns with the core objectives of the PR.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch readme-formatting-improvements

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