fix(observatory): align setup typography

apps/control-station/src/styles/observatory.css

@@ -35,12 +35,14 @@
 .observatory-lead h2,
 .observatory-catalog-bar h3,
 .observatory-session-summary h3,
+.observatory-setup-detail h3,
 .observatory-evidence h3 {
   margin: 0.3rem 0 0;
 }
 
 .observatory-catalog-bar h3,
 .observatory-session-summary h3,
+.observatory-setup-detail h3,
 .observatory-evidence h3 {
   font-size: var(--nodedc-font-size-lg);
   letter-spacing: -0.02em;

apps/control-station/test/observatoryWorkspace.test.mjs

@@ -142,6 +142,10 @@ test("Observatory mounts the one shared canonical replay only after explicit adm
     styles,
     /\.observatory-session-summary__facts dd \{[\s\S]*font-size: var\(--nodedc-font-size-sm\);/,
   );
+  assert.match(
+    styles,
+    /\.observatory-catalog-bar h3,[\s\S]*\.observatory-session-summary h3,[\s\S]*\.observatory-setup-detail h3,[\s\S]*\.observatory-evidence h3 \{[\s\S]*font-size: var\(--nodedc-font-size-lg\);/,
+  );
   assert.match(
     styles,
     /@container observatory-session \(max-width: 56rem\) \{[\s\S]*\.observatory-session-summary \{[\s\S]*grid-template-columns: minmax\(0, 1fr\);/,