fix: nowrap on format badges, widen search bar to 360px

Prevents "Quarto Slides" from wrapping to two lines in XS view.
Widens search input from 300px to 360px so French placeholder text fits.

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

services/web/frontend/stylesheets/pages/project-list-lumiere.scss

@@ -343,7 +343,7 @@ $lum-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' wi
 
   // Search bar — wide enough to show the full placeholder
   form.project-search .form-control {
-    min-width: 300px;
+    min-width: 360px;
   }
 
   .lumiere-title {
@@ -776,6 +776,7 @@ $lum-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' wi
     padding: 0.15em 0.5em;
     line-height: 1.5;
     border: none;
+    white-space: nowrap;
   }
 
   .project-format-badge-latex { background-color: rgba(#e6f4ec, 0.9); color: #098842; border: none; }