RW25 - Second phase - tweaks (#496)

* update speaker picture and add sessions for keynote

* fix carrousel on mobile

* add session content for aaron patterson

Author: Inesalvergne

_includes/world/2025/homepage_sections/speaker_carousel.html

@@ -49,7 +49,14 @@ <h2>This year's speakers</h2>
   const rightBtn = document.querySelector(".carousel-arrow.right");
 
   // Scroll 1 card width per click
-  const scrollAmount = carousel.clientWidth / 3;
+  let scrollAmount;
+  if (window.matchMedia("(max-width: 700px)").matches) {
+    scrollAmount = carousel.clientWidth;
+  } else if (window.matchMedia("(min-width: 701px) and (max-width: 1200px)").matches) {
+    scrollAmount = carousel.clientWidth / 2;
+  } else {
+    scrollAmount = carousel.clientWidth / 3;
+  }
 
   rightBtn.addEventListener("click", () => {
     const maxScrollLeft = carousel.scrollWidth - carousel.clientWidth;

_world_sessions/2025/day-1/aaron-patterson.md

@@ -0,0 +1,10 @@
+---
+layout: world/2025/session
+title: "Rails World Closing Keynote"
+speaker: aaron-patterson.md
+time:
+location:
+running_order:
+---
+
+We actually never know with Aaron. We'll find out what this session is about when you do.

_world_sessions/2025/day-1/david-hansson.md

@@ -0,0 +1,10 @@
+---
+layout: world/2025/session
+title: "Rails World Opening Keynote"
+speaker: david-hansson.md
+time:
+location:
+running_order:
+---
+
+DHH will kick off the third edition of Rails World in Amsterdam with an Opening Keynote highlighting what is new in Rails today, and where the framework is headed tomorrow.