Implement functional admin panel workflows

[Arthurescc]

/claim #28

Summary

• replace the /admin placeholder with an interactive admin console for user management, moderation, disputes, trust metrics, platform controls, and manual refresh
• add server-side admin-only API protection and admin endpoints for dashboard data, user status changes, flagged listing decisions, dispute rulings, platform controls, and notifications
• add focused API tests for anonymous/admin role enforcement, dashboard payloads, moderation workflows, dispute rulings, platform control toggles, and invalid action handling

Verification

• npm run test -w apps/api - 6 tests passed
• npm run build -w apps/web - production build passed
• git diff --check - passed
• Browser smoke check on http://localhost:3000/admin: unauthenticated request returned the 403 page; with ff_admin_role=admin cookie, the admin console rendered and user status actions updated the visible state

[BossChaos]

Code Review — Bounty #30 ($750)

PR: Implement functional admin panel workflows by @Arthurescc

• ✅ Admin panel implementation

Wallet: 0xdaE5d307339074A24F579dB48e7c639359D94904

Code review under Bounty #30 — API Benchmark Suite ($750)

[Arthurescc]

Thanks for the review and confirmation. Quick clarification: this PR was submitted for #28 (Admin Panel Page) and the PR body currently uses /claim #28. The review note mentions Bounty #30 / API Benchmark Suite, which looks like a different issue. Should I keep this claim on #28, or do you want me to adjust anything on the PR metadata?