about : extract team carousel into TeamCarousel component (swiper)

Replace inline carousel logic with a dedicated TeamCarousel.svelte component.
Uses SwiperJS for mobile peek (1.4 slides), tablet (2) and desktop (4) layouts,
with touch swipe, pagination dots and prev/next buttons.

related to #53

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -21,6 +21,7 @@
     "gsap": "^3.14.2",
     "navaid": "^1.2.0",
     "svelte": "^5.0.0",
+    "swiper": "^12.1.3",
     "vite": "7.0.4"
   },
   "devDependencies": {