Remove unused isDatabaseOpen method from Manager struct to streamline code and improve maintainability. (#4)

Author: Dumbris

internal/storage/manager.go

@@ -54,23 +54,6 @@ func (m *Manager) GetDB() *bbolt.DB {
 	return nil
 }
 
-// isDatabaseOpen checks if the database is open and available
-func (m *Manager) isDatabaseOpen() bool {
-	m.mu.RLock()
-	defer m.mu.RUnlock()
-
-	if m.db == nil || m.db.db == nil {
-		return false
-	}
-
-	// Test if database is actually usable by attempting a quick read
-	err := m.db.db.View(func(tx *bbolt.Tx) error {
-		return nil
-	})
-
-	return err == nil
-}
-
 // Upstream operations
 
 // SaveUpstreamServer saves an upstream server configuration