chore: add more OSS adopters

[aaguiarz]

Description

What problem is being solved?

• Added more adopters
• A few improvements in language/structure

How is it being solved?

What changes are made to solve it?

References

Review Checklist

• I have clicked on "allow edits by maintainers".
• I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• The correct base branch is being used, if not main
• I have added tests to validate that the change in functionality is working as expected

Summary by CodeRabbit

• Documentation
  • Updated descriptions of authorization patterns, OpenFGA features, and industry examples.
  • Revised links to the open-source projects and testing sections, and expanded and reorganized the project list.
  • Added guidance for using coding-assistant skills and MCP tools.
  • Replaced store creation and sample-data instructions with local test setup and commands.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: CHILL
• Plan: Advanced
• Run ID: 81473b12-f88a-4b85-a048-58d41c1c3bbd

📥 Commits

Reviewing files that changed from the base of the PR and between 6ab3113 and 853e6e3.

📒 Files selected for processing (1)

• README.md

Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review.

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Walkthrough

The README revises section descriptions and navigation, adds coding-assistant guidance and local test instructions, and updates the open-source project list.

Changes

README updates

Layer / File(s)	Summary
Descriptions and navigation README.md	The table of contents and descriptions for authorization patterns, OpenFGA features, and industry examples are revised.
Assistant guidance and local testing README.md	The README adds coding-assistant and MCP guidance. It replaces store-creation instructions with local test setup and commands.
Open-source project list README.md	The project list is retitled and updated with added entries, reordered entries, and a revised Lakekeeper link.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Other

Suggested reviewers: rhamzeh

Merge Risk: ⚪ Minimal · up to 853e6

The README updates assistant guidance, local test instructions, and project links. The documented test workflow matches CI, and no actionable merge-blocking risk was identified.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: expanding the list of open-source adopters in the README.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

• Autopilot · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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[Copilot]

🟢 Approval recommended

The documentation changes are consistent, and all newly added GitHub targets resolve.

0 open findings

What changed in this PR

Updates the README with more OSS adopters and clearer usage guidance.

Changes:

• Adds five OpenFGA adopter references.
• Clarifies model-source labels and section descriptions.
• Simplifies local sample-store testing instructions.

File	Description
README.md	Expands adopter links and improves documentation structure and wording.

🧠 Review effort: Balanced

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