update stats and path viz to use 2 day last seen time

src/app/(app)/stats/page.tsx

@@ -128,7 +128,7 @@ export default function StatsPage() {
           <div className="mb-6">
             <h2 className="text-lg font-semibold mb-2">Used Repeater Prefixes</h2>
             <p className="text-sm text-gray-600 dark:text-gray-400 mb-3">
-              Shows repeater nodes grouped by the first byte of their public key, seen within the last 7 days.
+              Shows repeater nodes grouped by the first byte of their public key, seen within the last 2 days.
             </p>
             <table className="w-full text-sm border">
               <thead>

src/app/api/stats/repeater-prefixes/route.ts

@@ -17,7 +17,7 @@ export async function GET(req: Request) {
           groupArray(node_name) as node_names
       FROM meshcore_adverts_latest 
       WHERE is_repeater = 1 
-          AND last_seen >= now() - INTERVAL 7 DAY
+          AND last_seen >= now() - INTERVAL 2 DAY
           ${regionWhereClause}
       GROUP BY prefix
       ORDER BY node_count DESC, prefix ASC

src/components/PathVisualization.tsx

@@ -132,7 +132,7 @@ export default function PathVisualization({
         exact: false,
         limit: 20,
         is_repeater: true, // Filter for repeaters only
-        lastSeen: config?.lastSeen,
+        lastSeen: 60*60*24*2, // 2 days
         region: config?.selectedRegion,
         enabled: showGraph && prefix.length > 0
       }))