feat(profile): add mobile swipe navigation for creator profile tabs

[EmeditWeb]

Close #358

PR summary:
Add horizontal swipe navigation to the creator profile tabs on mobile by detecting mostly-horizontal touch gestures and updating the active tab. The implementation keeps keyboard/tab accessibility unchanged and prevents interference with vertical scrolling by using native scrolling and touch-action: pan-y.

Files changed:

• LandingPage.tsx

Acceptance criteria:

• Swiping left advances to the next tab; swiping right returns to the previous tab.
• Swipe handling does not interfere with vertical page scrolling.
• Tab keyboard navigation remains unaffected.

How to test:

1. Install and run the app:

pnpm install
pnpm dev

2. Open the site (e.g. http://localhost:5173) in a mobile emulator or on a device.
3. Navigate to the Creator profile section and:
   • Swipe left on the tab panel → tab advances.
   • Swipe right on the tab panel → tab returns.
   • Attempt vertical scroll while swiping → page scroll remains smooth.
   • Use keyboard navigation (Tab + Enter/Arrow keys) to change tabs → behavior unchanged.

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