Implement Authentication & Authorization Module

[akargi]

Description

Develop a secure authentication and authorization module that manages user identity, session management, and permission controls for the entire application.

Direction

The module should provide:

• Multiple authentication strategies (Stellar wallet, OAuth, API keys)
• Session lifecycle management
• Role-based access control (RBAC)
• Audit logging for all auth events
• Rate limiting on failed attempts
• Token refresh and expiration handling
• Cross-platform session consistency

Acceptance Criteria

• Stellar wallet authentication integrates seamlessly
• OAuth flow follows industry standards
• API key management is secure and auditable
• Sessions timeout correctly after inactivity
• RBAC prevents unauthorized operations
• Failed auth attempts trigger rate limiting
• Token expiration is handled gracefully
• All auth events are audited with user context
• Cross-platform sessions remain consistent
• Security testing confirms no common vulnerabilities

[ustaxs]

I have read the requirements of this issue and i am confident that i can solve this

[grantfox-oss]

🦊 GrantFox — @ustaxs has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #5)
2. Your PR will be reviewed by the Chulilee maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign | FWC26 campaign!

@ustaxs's PR #22 was approved and merged by @akargi.

🏆 @ustaxs: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (557 total points). Track your full progress on GrantFox.

👏 Great work, @ustaxs! Keep contributing to Chulilee.