looprs-core 0.4.0

Domain types, ports, and macros for looprs
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//! UserOutput port — abstraction over user-facing terminal/UI output.

// TODO: hex refactor Phase 1 — Agent currently calls ui::* static functions
// directly. Replace with this port. Add write_chunk(&str) for streaming (idea #2).
// Wire the terminal adapter in looprs-cli; inject NullOutput in tests.
/// Port: emit structured output to the user.
///
/// Implementations may render to a terminal, a log file, a TUI widget,
/// or a machine-readable JSON stream.
pub trait UserOutput: Send + Sync {
    fn info(&self, msg: &str);
    fn warn(&self, msg: &str);
    fn error(&self, msg: &str);
    fn assistant_text(&self, text: &str);
    fn tool_call(&self, tool_name: &str, input_preview: &str);
    fn tool_ok(&self);
    fn tool_err(&self, err_msg: &str);
}