fix: use EmDashHead page prop correctly (matching official template)

Official template uses: <EmDashHead page={pageCtx} />
Not: <EmDashHead emdash={...} pageContext={...} />

Also removed Font component from imports (causes esbuild parse error)
and uses Google Fonts link tag instead.

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

.omc/state/subagent-tracking.json

@@ -13,5 +13,5 @@
   "total_spawned": 1,
   "total_completed": 1,
   "total_failed": 0,
-  "last_updated": "2026-05-01T00:10:41.751Z"
+  "last_updated": "2026-05-01T04:04:54.837Z"
 }