tenth version

internal/statemachine/system.go

@@ -100,8 +100,8 @@ func legalTransition(from, to domain.SystemState) bool {
 	}
 	allowed := map[domain.SystemState][]domain.SystemState{
 		domain.StateInit:               {domain.StateSyncInstruments, domain.StateWaitExitWindow, domain.StatePlaceExitOrders, domain.StateMonitorExitOrders, domain.StateGenerateSignals, domain.StatePlaceEntryOrders, domain.StateHoldOvernight, domain.StateReconcile, domain.StateSleep},
-		domain.StateSyncInstruments:    {domain.StateSyncMarketData},
-		domain.StateSyncMarketData:     {domain.StateGenerateSignals},
+		domain.StateSyncInstruments:    {domain.StateSyncMarketData, domain.StateInit},
+		domain.StateSyncMarketData:     {domain.StateGenerateSignals, domain.StateInit},
 		domain.StateGenerateSignals:    {domain.StateWaitEntryWindow, domain.StatePlaceEntryOrders, domain.StateHoldOvernight, domain.StateSleep},
 		domain.StateWaitEntryWindow:    {domain.StatePlaceEntryOrders, domain.StateSleep},
 		domain.StatePlaceEntryOrders:   {domain.StateMonitorEntryOrders, domain.StateHoldOvernight, domain.StateWaitExitWindow, domain.StatePlaceExitOrders, domain.StateMonitorExitOrders, domain.StateReconcile},

internal/statemachine/system_test.go

@@ -77,6 +77,18 @@ func TestCalendarRecoveryAllowsRestartInsideExitWindow(t *testing.T) {
 	}
 }
 
+func TestSyncStatesCanRecoverToInit(t *testing.T) {
+	ctx := context.Background()
+	repo := testutil.NewMemoryRepository()
+	system := New(repo, domain.ModePaper)
+	if err := system.Transition(ctx, domain.StateSyncInstruments, domain.StateInit); err != nil {
+		t.Fatalf("SYNC_INSTRUMENTS -> INIT should be legal recovery: %v", err)
+	}
+	if err := system.Transition(ctx, domain.StateSyncMarketData, domain.StateInit); err != nil {
+		t.Fatalf("SYNC_MARKET_DATA -> INIT should be legal recovery: %v", err)
+	}
+}
+
 func TestRecoverFromMonitorEntryHaltsOnCriticalReconciliationDiff(t *testing.T) {
 	ctx := context.Background()
 	repo := testutil.NewMemoryRepository()