Add oldest and newest route timestamps to status page

Display oldest and newest route timestamps in the Routing Table card
on the /status page. Timestamps are shown as relative times (e.g.,
"5m ago", "2h 30m ago").

Changes:
- Add OldestRoute and NewestRoute fields to database.Stats
- Query MIN/MAX of last_updated across live_routes_v4 and v6 tables
- Include timestamps in both /status.json and /api/v1/stats responses
- Add formatRelativeTime JavaScript function for display

internal/database/database.go

@@ -946,6 +946,23 @@ func (d *Database) GetStatsContext(ctx context.Context) (Stats, error) {
 	}
 	stats.LiveRoutes = v4Count + v6Count
 
+	// Get oldest and newest route timestamps
+	routeTimestampQuery := `
+		SELECT MIN(last_updated), MAX(last_updated) FROM (
+			SELECT last_updated FROM live_routes_v4
+			UNION ALL
+			SELECT last_updated FROM live_routes_v6
+		)
+	`
+	var oldestRoute, newestRoute *time.Time
+	err = d.db.QueryRowContext(ctx, routeTimestampQuery).Scan(&oldestRoute, &newestRoute)
+	if err != nil {
+		d.logger.Warn("Failed to get route timestamps", "error", err)
+	} else {
+		stats.OldestRoute = oldestRoute
+		stats.NewestRoute = newestRoute
+	}
+
 	// Get prefix distribution
 	stats.IPv4PrefixDistribution, stats.IPv6PrefixDistribution, err = d.GetPrefixDistributionContext(ctx)
 	if err != nil {

internal/database/interface.go

@@ -18,6 +18,8 @@ type Stats struct {
 	Peers                  int
 	FileSizeBytes          int64
 	LiveRoutes             int
+	OldestRoute            *time.Time
+	NewestRoute            *time.Time
 	IPv4PrefixDistribution []PrefixDistribution
 	IPv6PrefixDistribution []PrefixDistribution
 }

internal/server/handlers.go

@@ -164,6 +164,8 @@ func (s *Server) handleStatusJSON() http.HandlerFunc {
 		LiveRoutes             int                           `json:"live_routes"`
 		IPv4Routes             int                           `json:"ipv4_routes"`
 		IPv6Routes             int                           `json:"ipv6_routes"`
+		OldestRoute            *time.Time                    `json:"oldest_route,omitempty"`
+		NewestRoute            *time.Time                    `json:"newest_route,omitempty"`
 		IPv4UpdatesPerSec      float64                       `json:"ipv4_updates_per_sec"`
 		IPv6UpdatesPerSec      float64                       `json:"ipv6_updates_per_sec"`
 		IPv4PrefixDistribution []database.PrefixDistribution `json:"ipv4_prefix_distribution"`
@@ -258,6 +260,8 @@ func (s *Server) handleStatusJSON() http.HandlerFunc {
 			LiveRoutes:             dbStats.LiveRoutes,
 			IPv4Routes:             ipv4Routes,
 			IPv6Routes:             ipv6Routes,
+			OldestRoute:            dbStats.OldestRoute,
+			NewestRoute:            dbStats.NewestRoute,
 			IPv4UpdatesPerSec:      routeMetrics.IPv4UpdatesPerSec,
 			IPv6UpdatesPerSec:      routeMetrics.IPv6UpdatesPerSec,
 			IPv4PrefixDistribution: dbStats.IPv4PrefixDistribution,
@@ -369,6 +373,8 @@ func (s *Server) handleStats() http.HandlerFunc {
 		LiveRoutes             int                           `json:"live_routes"`
 		IPv4Routes             int                           `json:"ipv4_routes"`
 		IPv6Routes             int                           `json:"ipv6_routes"`
+		OldestRoute            *time.Time                    `json:"oldest_route,omitempty"`
+		NewestRoute            *time.Time                    `json:"newest_route,omitempty"`
 		IPv4UpdatesPerSec      float64                       `json:"ipv4_updates_per_sec"`
 		IPv6UpdatesPerSec      float64                       `json:"ipv6_updates_per_sec"`
 		HandlerStats           []HandlerStatsInfo            `json:"handler_stats"`
@@ -530,6 +536,8 @@ func (s *Server) handleStats() http.HandlerFunc {
 			LiveRoutes:             dbStats.LiveRoutes,
 			IPv4Routes:             ipv4Routes,
 			IPv6Routes:             ipv6Routes,
+			OldestRoute:            dbStats.OldestRoute,
+			NewestRoute:            dbStats.NewestRoute,
 			IPv4UpdatesPerSec:      routeMetrics.IPv4UpdatesPerSec,
 			IPv6UpdatesPerSec:      routeMetrics.IPv6UpdatesPerSec,
 			HandlerStats:           handlerStatsInfo,

internal/templates/status.html

@@ -321,6 +321,14 @@
                 <span class="metric-label">IPv6 Updates/sec</span>
                 <span class="metric-value" id="ipv6_updates_per_sec">-</span>
             </div>
+            <div class="metric">
+                <span class="metric-label">Oldest Route</span>
+                <span class="metric-value" id="oldest_route">-</span>
+            </div>
+            <div class="metric">
+                <span class="metric-label">Newest Route</span>
+                <span class="metric-value" id="newest_route">-</span>
+            </div>
         </div>
 
         <div class="status-card">
@@ -400,7 +408,23 @@
                 return ms.toFixed(2) + ' ms';
             }
         }
-        
+
+        function formatRelativeTime(isoString) {
+            if (!isoString) return '-';
+            const date = new Date(isoString);
+            const now = new Date();
+            const diffMs = now - date;
+            const diffSec = Math.floor(diffMs / 1000);
+            const diffMin = Math.floor(diffSec / 60);
+            const diffHour = Math.floor(diffMin / 60);
+            const diffDay = Math.floor(diffHour / 24);
+
+            if (diffSec < 60) return diffSec + 's ago';
+            if (diffMin < 60) return diffMin + 'm ago';
+            if (diffHour < 24) return diffHour + 'h ' + (diffMin % 60) + 'm ago';
+            return diffDay + 'd ' + (diffHour % 24) + 'h ago';
+        }
+
         function updatePrefixDistribution(elementId, distribution) {
             const container = document.getElementById(elementId);
             container.innerHTML = '';
@@ -506,6 +530,8 @@
             document.getElementById('ipv6_routes').textContent = '-';
             document.getElementById('ipv4_updates_per_sec').textContent = '-';
             document.getElementById('ipv6_updates_per_sec').textContent = '-';
+            document.getElementById('oldest_route').textContent = '-';
+            document.getElementById('newest_route').textContent = '-';
             document.getElementById('whois_fresh').textContent = '-';
             document.getElementById('whois_stale').textContent = '-';
             document.getElementById('whois_never').textContent = '-';
@@ -566,6 +592,8 @@
                     document.getElementById('ipv6_routes').textContent = formatNumber(data.ipv6_routes);
                     document.getElementById('ipv4_updates_per_sec').textContent = data.ipv4_updates_per_sec.toFixed(1);
                     document.getElementById('ipv6_updates_per_sec').textContent = data.ipv6_updates_per_sec.toFixed(1);
+                    document.getElementById('oldest_route').textContent = formatRelativeTime(data.oldest_route);
+                    document.getElementById('newest_route').textContent = formatRelativeTime(data.newest_route);
 
                     // Update stream stats
                     if (data.stream) {