Admin: Get All Users (Paginated)

[grantfox-oss]

Description:
Allow admins to retrieve a paginated list of all users.

Tasks:

• Create GET /api/admin/users
• Require admin role
• Support query params: page, limit, search (by name/email), role, kycStatus
• Return paginated response: { data, total, page, totalPages }

Acceptance Criteria:
Admin can paginate and filter users; non-admins receive 403.

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[SudiptaPaul-31]

May I be assigned to this issue please my name is Sudipta Paul a active open source contributor with more than 50+ merged pr's and also an active contributor of GrantFox from beginning and would love to work on this issue and get a pr merged.
ETA : 2days

[sadeeq6400]

Hello

please let me tackle this issue

[grantfox-oss]

🦊 GrantFox — @sadeeq6400 has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #53)
2. Your PR will be reviewed by the Dfunder 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 campaign!

@sadeeq6400's PR #76 was approved and merged by @ayshadogo.

🏆 @sadeeq6400: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (188 total points). Track your full progress on GrantFox.

👏 Great work, @sadeeq6400! Keep contributing to Dfunder.