fix: error check on state (#864)

pkg/state/state.go

@@ -40,7 +40,9 @@ func NewManager(workspace string) *Manager {
 	oldStateFile := filepath.Join(workspace, "state.json")
 
 	// Create state directory if it doesn't exist
-	os.MkdirAll(stateDir, 0o755)
+	if err := os.MkdirAll(stateDir, 0o755); err != nil {
+		log.Fatalf("[FATAL] state: failed to create state directory: %v", err)
+	}
 
 	sm := &Manager{
 		workspace: workspace,
@@ -54,13 +56,17 @@ func NewManager(workspace string) *Manager {
 		if data, err := os.ReadFile(oldStateFile); err == nil {
 			if err := json.Unmarshal(data, sm.state); err == nil {
 				// Migrate to new location
-				sm.saveAtomic()
+				if err := sm.saveAtomic(); err != nil {
+					log.Printf("[WARN] state: failed to save state: %v", err)
+				}
 				log.Printf("[INFO] state: migrated state from %s to %s", oldStateFile, stateFile)
 			}
 		}
 	} else {
 		// Load from new location
-		sm.load()
+		if err := sm.load(); err != nil {
+			log.Printf("[WARN] state: failed to load state: %v", err)
+		}
 	}
 
 	return sm