Fix tracking path: lower bars_elapsed threshold from 12 to 3

The ring buffer only held 24 predictions (~2 hours), so
bars_elapsed never reached 12. Lowered threshold to 3 (matching
the minimum scoring requirement of 3 realized points).

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

Author: 2 people

src/components/layout/Dashboard.tsx

@@ -94,7 +94,7 @@ export function Dashboard() {
     if (!hindcast?.length || !prediction) return null;
     // Find most recent prediction with scoring and best_paths
     const scored = [...hindcast].reverse().find(
-      (h) => h.scoring?.best_paths?.length && h.bars_elapsed >= 12,
+      (h) => h.scoring?.best_paths?.length && h.bars_elapsed >= 3,
     );
     if (!scored?.scoring?.best_paths?.length) return null;