Struct EngineConfig 

pub struct EngineConfig {
    pub valid_time_confidence_threshold: f32,
    pub corroboration_count_for_currency_boost: u32,
    pub currency_decay_rate_per_day: f32,
    pub criticality_overturn_floor: Criticality,
    pub derivation_depth_cap_for_currency_boost: u32,
    pub derivation_depth_cap_for_overturning: u32,
    pub quarantine_burst_threshold: u32,
    pub aging_unconfirmed_threshold_days: u32,
    pub decayed_threshold_days: u32,
    pub default_adjudication_ttl: Option<Duration>,
}

Configuration for the mempill engine.

All fields are runtime-tunable parameters, loadable from environment or config file. Defaults are illustrative v0.1 starting values; calibrate post-v0.1 based on your observed incident distribution.

Fields

valid_time_confidence_threshold: f32

Minimum valid_time_confidence required to treat extracted valid-time as authoritative. Below this threshold the engine treats valid-time as unknown and falls back to transaction-time ordering for belief ranking.

corroboration_count_for_currency_boost: u32

Minimum number of provenance-independent corroborating sources required for a currency boost. Corroboration is a confidence modifier only — it does not by itself flip the routing decision.

currency_decay_rate_per_day: f32

Daily fractional decay rate for currency decay. Applied as: current_currency = initial * (1 - rate) ^ days_since_refresh.

criticality_overturn_floor: Criticality

Minimum criticality at which oracle escalation is mandatory for belief-overturning operations.

derivation_depth_cap_for_currency_boost: u32

Maximum derivation depth eligible for currency boosts (provenance laundering cap). Claims with a depth exceeding this cap cannot receive currency boosts from corroboration.

derivation_depth_cap_for_overturning: u32

Maximum derivation depth eligible to overturn an incumbent belief (self-limiting cap). Claims with a depth exceeding this cap cannot overturn; they route to PendingConflict instead.

quarantine_burst_threshold: u32

Number of identical RecallReEntry candidates in a single write batch that triggers Quarantine. This is the Amplification Guard burst detection threshold.

aging_unconfirmed_threshold_days: u32

Days since last currency refresh before a belief enters the AgingUnconfirmed state.

decayed_threshold_days: u32

Days since last currency refresh before a belief enters the Decayed state.

default_adjudication_ttl: Option<Duration>

Default TTL for pending adjudications.

When Some(d), every pending row gets expires_at = queued_at + d. When None, no TTL is set and pending rows never expire via the engine sweep.

Per-request TTL override is deferred to a future wave (the IngestClaimRequest DTO does not yet carry a TTL field); the config default is the v1 mechanism.

Trait Implementations

impl Clone for EngineConfig

fn clone(&self) -> EngineConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EngineConfig

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

Formats the value using the given formatter.

impl Default for EngineConfig

fn default() -> Self

Illustrative defaults — calibrate post-v0.1 based on your production incident distribution.