chore: réordonnancement CSS expertise, log debug router, newline backend

- Expertise : réordonne align-self avant font-size dans .expertise-title
- Router : ajout console.log pour debug des données de slide
- expertise.json.php : suppression newline final

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

src/router/index.js

@@ -55,6 +55,7 @@ async function loadSlide(path) {
     const response = await fetch(`${apiPrefix()}${slidePath}.json`);
     if (!response.ok) throw new Error(`HTTP ${response.status}`);
     const data = await response.json();
+    console.log("slide data", data);
 
     if (!siteInitialized && data.site) {
       site.set(data.site);

src/views/Expertise.svelte

@@ -324,10 +324,11 @@
   .expertise-title {
     grid-area: 8/6 / span 5 / span 5;
     z-index: var(--z-content);
-    text-align: left;
-    font-size: var(--font-size-title-hero);
-    color: var(--color-text);
     align-self: center;
+    
+    font-size: var(--font-size-title-hero);
+    text-align: left;
+    color: var(--color-text);
     line-height: 1;
   }