chore: update DS to v0.1.38, enforce 12px font size floor

Update @cameleer/design-system to v0.1.38 (12px minimum font size).
Replace all 10px and 11px font sizes with 12px across 25 CSS modules
and 5 TSX inline styles to match the new DS floor.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/pages/DashboardTab/DashboardTab.module.css

@@ -30,7 +30,7 @@
 }
 
 .refreshText {
-  font-size: 11px;
+  font-size: 12px;
   color: var(--text-muted);
   font-family: var(--font-mono);
 }
@@ -59,7 +59,7 @@
 }
 
 .tableMeta {
-  font-size: 11px;
+  font-size: 12px;
   color: var(--text-muted);
   font-family: var(--font-mono);
 }
@@ -136,7 +136,7 @@
 
 .toggleBtn {
   padding: 3px 10px;
-  font-size: 11px;
+  font-size: 12px;
   font-family: var(--font-mono);
   color: var(--text-muted);
   background: transparent;