Separate IPv4 and IPv6 routes into different tables

- Create live_routes_v4 and live_routes_v6 tables
- Update all database methods to use appropriate table
- Add IP version detection in database queries
- Remove filtering by ip_version column for better performance
- Fix route count queries that were timing out
- Update PrefixHandler to include IP version in deletions

internal/routewatch/prefixhandler.go

@@ -192,11 +192,20 @@ func (h *PrefixHandler) flushBatchLocked() {
 				routesToUpsert = append(routesToUpsert, route)
 			}
 		} else if update.messageType == "withdrawal" {
+			// Parse CIDR to get IP version
+			_, ipVersion, err := parseCIDR(update.prefix)
+			if err != nil {
+				h.logger.Error("Failed to parse CIDR for withdrawal", "prefix", update.prefix, "error", err)
+
+				continue
+			}
+
 			// Create deletion record for batch delete
 			routesToDelete = append(routesToDelete, database.LiveRouteDeletion{
 				Prefix:    update.prefix,
 				OriginASN: update.originASN,
 				PeerIP:    update.peer,
+				IPVersion: ipVersion,
 			})
 		}
 	}