Struct RunTuning 

pub struct RunTuning {
    pub model: Option<String>,
    pub effort: Option<ReasoningEffort>,
    pub max_turns: Option<u32>,
    pub extra_args: Vec<String>,
}

User-chosen, harness-neutral run-shaping knobs. Every field is optional; each adapter maps the ones its CLI supports and ignores the rest (Claude has no reasoning-effort flag; Codex has no max-turns flag). Grouped into one struct so the neutral RunRequest stays open for extension — a new knob is a field here, not a new positional parameter threaded through every caller.

Fields

model: Option<String>

Model id or alias passed verbatim to the CLI (--model / -m). None → let the CLI use its configured default.

effort: Option<ReasoningEffort>

Reasoning effort (Codex: -c model_reasoning_effort).

max_turns: Option<u32>

Cap on agentic turns (Claude: --max-turns).

extra_args: Vec<String>

Raw CLI args the host appends verbatim after the adapter’s own, so a host can add a flag (--settings, --add-dir) or override one it already sets — for CLIs where a repeated flag is last-wins (e.g. Claude Code / commander) — without editing the adapter. The host opts into CLI-specific flag names when it uses this; keep cross-harness knobs as their own typed fields above. Default empty.

Trait Implementations

impl Clone for RunTuning

fn clone(&self) -> RunTuning

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RunTuning

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RunTuning

fn default() -> RunTuning

Returns the “default value” for a type.