Fix prefix URL routing to handle CIDR notation with slashes

- Use wildcard route pattern for /prefix/* endpoints
- Extract prefix parameter using chi.URLParam(r, "*")
- Fixes 400 error when accessing /prefix/x.x.x.x/32 directly

internal/server/handlers.go

@@ -320,6 +320,23 @@ func (s *Server) handleStats() http.HandlerFunc {
 		MaxProcessTimeMs   float64 `json:"max_process_time_ms"`
 	}
 
+	// GCStats represents garbage collection statistics
+	type GCStats struct {
+		NumGC           uint32 `json:"num_gc"`
+		TotalPauseMs    uint64 `json:"total_pause_ms"`
+		LastPauseMs     float64 `json:"last_pause_ms"`
+		HeapAllocBytes  uint64 `json:"heap_alloc_bytes"`
+		HeapSysBytes    uint64 `json:"heap_sys_bytes"`
+	}
+
+	// StreamStats represents stream statistics including announcements/withdrawals
+	type StreamStats struct {
+		Announcements     uint64  `json:"announcements"`
+		Withdrawals       uint64  `json:"withdrawals"`
+		RouteChurnPerSec  float64 `json:"route_churn_per_sec"`
+		BGPPeerCount      int     `json:"bgp_peer_count"`
+	}
+
 	// StatsResponse represents the API statistics response
 	type StatsResponse struct {
 		Uptime                 string                        `json:"uptime"`
@@ -335,6 +352,8 @@ func (s *Server) handleStats() http.HandlerFunc {
 		GoVersion              string                        `json:"go_version"`
 		Goroutines             int                           `json:"goroutines"`
 		MemoryUsage            string                        `json:"memory_usage"`
+		GC                     GCStats                       `json:"gc"`
+		Stream                 StreamStats                   `json:"stream"`
 		ASNs                   int                           `json:"asns"`
 		Prefixes               int                           `json:"prefixes"`
 		IPv4Prefixes           int                           `json:"ipv4_prefixes"`
@@ -685,7 +704,8 @@ func (s *Server) handleASDetailJSON() http.HandlerFunc {
 // handlePrefixDetailJSON returns prefix details as JSON
 func (s *Server) handlePrefixDetailJSON() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		prefixParam := chi.URLParam(r, "prefix")
+		// Get wildcard parameter (everything after /prefix/)
+		prefixParam := chi.URLParam(r, "*")
 		if prefixParam == "" {
 			writeJSONError(w, http.StatusBadRequest, "Prefix parameter is required")
 
@@ -851,7 +871,8 @@ func (s *Server) handleASDetail() http.HandlerFunc {
 // handlePrefixDetail returns a handler that serves the prefix detail HTML page
 func (s *Server) handlePrefixDetail() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		prefixParam := chi.URLParam(r, "prefix")
+		// Get wildcard parameter (everything after /prefix/)
+		prefixParam := chi.URLParam(r, "*")
 		if prefixParam == "" {
 			http.Error(w, "Prefix parameter is required", http.StatusBadRequest)
 

internal/server/routes.go

@@ -28,7 +28,7 @@ func (s *Server) setupRoutes() {
 
 	// AS and prefix detail pages
 	r.Get("/as/{asn}", s.handleASDetail())
-	r.Get("/prefix/{prefix}", s.handlePrefixDetail())
+	r.Get("/prefix/*", s.handlePrefixDetail())
 	r.Get("/prefixlength/{length}", s.handlePrefixLength())
 	r.Get("/prefixlength6/{length}", s.handlePrefixLength6())
 
@@ -45,7 +45,7 @@ func (s *Server) setupRoutes() {
 		r.Get("/stats", s.handleStats())
 		r.Get("/ip/{ip}", s.handleIPLookup())
 		r.Get("/as/{asn}", s.handleASDetailJSON())
-		r.Get("/prefix/{prefix}", s.handlePrefixDetailJSON())
+		r.Get("/prefix/*", s.handlePrefixDetailJSON())
 	})
 
 	s.router = r