feat(go): add realtime kv projection

go/vehicle-gateway/internal/realtime/repository_test.go

@@ -271,6 +271,48 @@ func TestRepositoryCollapsesGB32960VendorStackFragmentsIntoSingleRealtimeSummary
 	}
 }
 
+func TestRepositoryWritesRealtimeKVHashes(t *testing.T) {
+	repo, closeFn := newTestRepository(t)
+	defer closeFn()
+	ctx := context.Background()
+
+	if err := repo.Update(ctx, envelope.FrameEnvelope{
+		Protocol:     envelope.ProtocolGB32960,
+		VIN:          "VIN001",
+		EventTimeMS:  1000,
+		ReceivedAtMS: 1100,
+		Parsed: map[string]any{
+			"data_units": []any{
+				map[string]any{"type": "0x01", "name": "vehicle", "value": map[string]any{"soc_percent": 88.0}},
+				map[string]any{"type": "0x30", "name": "gd_fc_stack", "value": map[string]any{
+					"stack_count": 1,
+					"summaries":   []any{map[string]any{"stack_water_outlet_temp_c": 63}},
+				}},
+			},
+		},
+	}); err != nil {
+		t.Fatalf("Update() error = %v", err)
+	}
+
+	vehicleKV, err := repo.client.HGetAll(ctx, "vehicle:rt-kv:GB32960:VIN001:vehicle").Result()
+	if err != nil {
+		t.Fatalf("vehicle kv HGetAll error = %v", err)
+	}
+	if vehicleKV["soc_percent"] != "88" || vehicleKV["_event_id"] == "" || vehicleKV["_event_time_ms"] != "1000" {
+		t.Fatalf("vehicle kv = %#v", vehicleKV)
+	}
+	stackKV, err := repo.client.HGetAll(ctx, "vehicle:rt-kv:GB32960:VIN001:gd_fc_stack").Result()
+	if err != nil {
+		t.Fatalf("stack kv HGetAll error = %v", err)
+	}
+	if stackKV["stack_water_outlet_temp_c"] != "63" {
+		t.Fatalf("stack kv = %#v", stackKV)
+	}
+	if ttl := repo.client.TTL(ctx, "vehicle:rt-kv:GB32960:VIN001:vehicle").Val(); ttl <= 0 {
+		t.Fatalf("kv ttl should be set, got %v", ttl)
+	}
+}
+
 func TestRepositoryReplacesJT808LocationWhenUpdatingRealtimeRaw(t *testing.T) {
 	repo, closeFn := newTestRepository(t)
 	defer closeFn()