fix(pdf-viewer): use PDF.js with client-side rendering

- Created PDFViewerClient component with PDF.js
- Uses dynamic import with ssr: false to avoid server-side issues
- Full page navigation and zoom controls
- Upload or load from URL

data/eod_briefs.json

@@ -1,4 +1,16 @@
 [
+  {
+    "id": "eod-1774296002482",
+    "date": "2026-03-23",
+    "completed": [
+      "See Mission Control for details",
+      "🛡️ SECURITY: 10 advisories found today! Check MC."
+    ],
+    "progress": {},
+    "council": {},
+    "tomorrow": [],
+    "created_at": "2026-03-23T20:00:02.482Z"
+  },
   {
     "id": "eod-1774209602462",
     "date": "2026-03-22",