[UX] Hide Airdrop from nav bar (keep accessible via direct link)

[realproject7]

Scope

Temporarily hide the "Airdrop" link from the top navigation bar. The /airdrop page should remain functional and accessible via direct URL — just not visible in the nav.

This allows continued development and testing of the airdrop features before the public campaign launch.

Fix

Remove or comment out the "Airdrop" nav item in the navbar component. Do NOT delete the /airdrop page or any airdrop functionality.

Files

• `src/components/NavBar.tsx` (or equivalent nav component)

Acceptance Criteria

• "Airdrop" not visible in the top nav bar
• `/airdrop` page still works via direct URL
• All airdrop APIs still functional
• Easy to re-enable later (comment, not delete)