feat(platform): keep canonical source summary slots

vehicle-data-platform/apps/api/internal/platform/service.go

@@ -58,6 +58,37 @@ type Service struct {
 
 var canonicalVehicleProtocols = []string{"GB32960", "JT808", "YUTONG_MQTT"}
 
+func completeProtocolStats(stats []ProtocolStat) []ProtocolStat {
+	byProtocol := make(map[string]ProtocolStat, len(stats)+len(canonicalVehicleProtocols))
+	for _, stat := range stats {
+		protocol := strings.TrimSpace(stat.Protocol)
+		if protocol == "" {
+			continue
+		}
+		stat.Protocol = protocol
+		byProtocol[protocol] = stat
+	}
+	out := make([]ProtocolStat, 0, len(byProtocol)+len(canonicalVehicleProtocols))
+	seen := map[string]struct{}{}
+	for _, protocol := range canonicalVehicleProtocols {
+		stat := byProtocol[protocol]
+		stat.Protocol = protocol
+		out = append(out, stat)
+		seen[protocol] = struct{}{}
+	}
+	extra := make([]string, 0)
+	for protocol := range byProtocol {
+		if _, ok := seen[protocol]; !ok {
+			extra = append(extra, protocol)
+		}
+	}
+	sort.Strings(extra)
+	for _, protocol := range extra {
+		out = append(out, byProtocol[protocol])
+	}
+	return out
+}
+
 func missingCanonicalProtocols(protocols []string) []string {
 	missing := make([]string, 0, len(canonicalVehicleProtocols))
 	for _, protocol := range canonicalVehicleProtocols {