Module effect 

App-level effects for pre-pipeline operations.

This module defines effects that represent side effects in the CLI layer before the pipeline reducer takes over. Effects are data describing what should happen, not the execution itself.

Architecture

Effects follow the functional core / imperative shell pattern:

• Pure functions produce AppEffect values describing desired operations
• An AppEffectHandler executes the effects, performing actual I/O
• This separation enables testing without real filesystem or git operations

Example

// Pure function returns effects (testable)
fn setup_workspace() -> Vec<AppEffect> {
    vec![
        AppEffect::CreateDir { path: PathBuf::from(".agent") },
        AppEffect::WriteFile {
            path: PathBuf::from(".agent/config.toml"),
            content: "key = value".to_string(),
        },
    ]
}

// Handler executes effects (I/O boundary)
for effect in setup_workspace() {
    handler.execute(effect);
}

Enums

AppEffect

App-level effects for CLI operations.

AppEffectResult

Result of executing an AppEffect.

CommitResult

Result of a git commit operation.

RebaseResult

Result of a rebase operation.

Traits

AppEffectHandler

Trait for executing app-level effects.