Struct SystemRefConfig 

pub struct SystemRefConfig {
    pub threshold_bytes: usize,
    pub mode: SystemRefMode,
    pub store_dir: PathBuf,
}

GH #31: server-side config for how a baked system_prompt too large to inline is delivered instead — see Engine::fetch_worker_payload’s threshold branch (crate::core::engine) for where this is consumed. Single server-side setting, not per-request: every fetch of a given (task_id, attempt) sees the same mode and threshold_bytes.

Fields

threshold_bytes: usize

Byte length of the baked system string above which Engine::fetch_worker_payload{,_trusted} switches from inlining the value (WorkerPayload.system) to a reference (WorkerPayload.system_ref). Default (25 * 1024, 25 KiB) matches bp_doctor’s existing WARN threshold (AGENT_MD_DEFAULT_WARN_BYTES in crates/mlua-swarm-cli/src/mcp.rs) — the same SubAgent context-window headroom rationale that threshold documents applies here to inline-vs-reference delivery.

mode: SystemRefMode

Which crate::types::SystemRefMode an over-threshold response uses to deliver its content.

store_dir: PathBuf

Directory SystemRefMode::File writes rendered system bodies into (<store_dir>/<task_id>-<attempt>.md). No eviction policy — files accumulate for the process lifetime (explicitly out of scope; see the risk note on Engine::fetch_worker_payload).

Trait Implementations

impl Clone for SystemRefConfig

fn clone(&self) -> SystemRefConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SystemRefConfig

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

Formats the value using the given formatter.

impl Default for SystemRefConfig

fn default() -> Self

threshold_bytes = 25 * 1024, mode = SystemRefMode::File, store_dir = std::env::temp_dir().join("mse-system-ref").