command_it Expert - Command Pattern with Reactive States

What: Wrap functions as command objects with automatic loading/error/result states. Built on listen_it.

CRITICAL RULES

• Use run() to execute commands, NOT execute() (deprecated)
• Sync commands ASSERT on isRunning access - use async commands for loading states
• restriction.value == true means command is DISABLED (cannot run)
• Factory constructors with TResult require initialValue parameter
• Error filters return ErrorReaction enum, NOT bool

Factory Constructors

Choose the right one based on parameter/result combinations: