Function resolve_stack

src/context/tsk_config.rs:741–770

Resolves the stack using the full resolution chain. Priority: CLI flag > config layers (user `[project. ]` > project `.tsk/tsk.toml` > user `[defaults]`) > auto-detect from project files > `"default"` fallback.

(
    cli_stack: Option<String>,
    tsk_config: &TskConfig,
    project_name: &str,
    project_config: Option<&SharedConfig>,
    repo_root: &Path,
)

/// Priority: CLI flag > config layers (user `[project.<name>]` > project `.tsk/tsk.toml`
/// > user `[defaults]`) > auto-detect from project files > `"default"` fallback.
pub async fn resolve_stack(
    cli_stack: Option<String>,
    tsk_config: &TskConfig,
    project_name: &str,
    project_config: Option<&SharedConfig>,
    repo_root: &Path,
) -> String {
    if let Some(stack) = cli_stack {
        return stack;
    }

    let config_stack = tsk_config
        .project
        .get(project_name)
        .and_then(|p| p.stack.clone())
        .or_else(|| project_config.and_then(|pc| pc.stack.clone()))
        .or_else(|| tsk_config.defaults.stack.clone());

    if let Some(stack) = config_stack {
        return stack;
    }

    match crate::repository::detect_stack(repo_root).await {
        Ok(detected) => detected,
        Err(e) => {
            eprintln!("Warning: Failed to detect stack: {e}. Using default.");
            "default".to_string()
        }
    }
}

/// Resolves the agent from CLI flag or resolved config.
///