Add run dashboard and encounter tracking interface

Run list at /runs shows all runs with status badges. Run dashboard at
/runs/:id displays stats, active team, graveyard, and rule badges.
Encounter tracking at /runs/:runId/encounters shows route list with
status indicators, progress bar, filters, and a modal for logging or
editing encounters with pokemon picker.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/components/Layout.tsx

@@ -19,16 +19,10 @@ export function Layout() {
                 New Run
               </Link>
               <Link
-                to="/dashboard"
+                to="/runs"
                 className="px-3 py-2 rounded-md text-sm font-medium hover:bg-gray-100 dark:hover:bg-gray-700"
               >
-                Dashboard
-              </Link>
-              <Link
-                to="/encounters"
-                className="px-3 py-2 rounded-md text-sm font-medium hover:bg-gray-100 dark:hover:bg-gray-700"
-              >
-                Encounters
+                My Runs
               </Link>
             </div>
           </div>