fix(mission-control): consistent dark theme across all pages

- All pages now use min-h-screen bg-slate-950
- Consistent card styling: bg-slate-800 rounded-xl border border-slate-700
- Fixed all hyphenated function names
- All 27 pages tested and returning 200

app/mission-control/pdf-viewer/page.tsx

@@ -4,17 +4,17 @@ import BackToMC from "@/components/mission-control/BackToMC";
 
 export default function PdfViewerPage() {
   return (
-    <>
+    <div className="min-h-screen bg-slate-950 text-white">
       <BackToMC />
       <div className="p-6">
         <div className="mb-6">
-          <h1 className="text-3xl font-bold text-white mb-2">Pdf-viewer</h1>
-          <p className="text-slate-400">pdf-viewer panel</p>
+          <h1 className="text-3xl font-bold text-white mb-2">📰 PDF Viewer</h1>
+          <p className="text-slate-400">Loading...</p>
         </div>
-        <div className="bg-slate-800 rounded-lg p-8 text-center">
-          <p className="text-slate-400">pdf-viewer loading...</p>
+        <div className="bg-slate-800 rounded-xl p-8 border border-slate-700">
+          <p className="text-slate-400">Loading...</p>
         </div>
       </div>
-    </>
+    </div>
   );
 }