fix: admin button font size, extend button rounding to PDF toolbar

- Remove font-size: 0.8rem from Admin navbar button (was shrinking text)
- Add border-radius: 7px to .toolbar-pdf .btn so the Recompile, Logs and
  Download buttons in the PDF panel get the Lumière rounded-square shape
- Add border-radius to compile-button-group .btn to cover the dropdown
  arrow toggle next to the Recompile button

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

services/web/frontend/stylesheets/pages/editor/ide-lumiere.scss

@@ -163,10 +163,25 @@ $lum-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' wi
   }
 }
 
+// ── PDF panel toolbar (Recompile, Logs, Download) ──────────────────────────
+// The compile button and its neighbours live in .toolbar-pdf, not in the
+// main ide-redesign-toolbar, so they need their own border-radius rule.
+
+[data-lumiere='true'] .toolbar-pdf {
+  .btn {
+    border-radius: 7px !important;
+  }
+}
+
 // ── Compile button — teal gradient ────────────────────────────────────────
 // .compile-button-group wraps the Recompile button in the toolbar actions
 
 [data-lumiere='true'] .compile-button-group {
+  .btn-primary,
+  .btn {
+    border-radius: 7px !important;
+  }
+
   .btn-primary {
     background: linear-gradient(135deg, $lum-teal 0%, darken($lum-teal, 8%) 100%) !important;
     border-color: darken($lum-teal, 10%) !important;

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

@@ -73,7 +73,6 @@ $lum-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' wi
     // Admin button
     .subdued > .dropdown-toggle {
       color: $lum-text-sub !important;
-      font-size: 0.8rem;
       font-weight: 500;
     }