Struct Decision 

pub struct Decision {

    pub signal_id: String,
    pub category: DecisionCategory,
    pub question: String,
    pub anchor_file: String,
    pub anchor_line: u32,
    pub signal_key: String,
    pub previous_signal_id: Option<String>,
    pub blast: u64,
    pub consequence: u64,
    pub expert: Vec<String>,
    pub bus_factor_one: bool,
    pub internal_consumer_count: u64,
    pub tradeoff: String,
}

One consequential structural decision, framed as a judgment question for a human with taste, anchored to a fallow-emitted signal.

Fields

signal_id: String

Deterministic anchor to the fallow-emitted candidate this decision frames. accept_signal_id rejects any id not in the emitted set.

category: DecisionCategory

One of the SOLID-3 categories.

question: String

The decision framed as a judgment question for the human.

anchor_file: String

Root-relative file the decision is anchored at.

anchor_line: u32

1-based anchor line, when the underlying signal carries one (0 = file head).

signal_key: String

The raw fallow-emitted candidate key the signal_id hashes.

previous_signal_id: Option<String>

The signal_id this decision WOULD have had before any rename in this change (the anchor file’s pre-rename path). Present only when the anchor was renamed. A review-memory layer carries a dismissal across a git mv: if previous_signal_id was dismissed in an earlier PR, treat this decision as dismissed too. Keeps signal_id itself exact + deterministic.

blast: u64

Blast radius: count of modules affected beyond the diff by this decision.

consequence: u64

blast * reversibility_weight: the rank key (sorted descending).

expert: Vec<String>

The routed expert(s) to ask, from ownership routing. Empty when no ownership signal is available for the anchor file.

bus_factor_one: bool

Whether the anchor file’s only qualified owner is one person.

internal_consumer_count: u64

Honest per-decision count: in-repo modules OUTSIDE the diff that already depend on this decision’s anchor. This is the DISPLAY number (taste ownership: the human reads reversibility from the count itself), distinct from blast (the project-wide proxy used only for ranking). Never a door label. Internal-only by construction, so it cannot see a published library’s external consumers; the public-API trade-off clause names that risk in prose.

tradeoff: String

The named structural sacrifice this change makes, stated as a fact, never a recommendation (e.g. “Couples app to infra; 4 in-repo modules already depend on this anchor.”). A sibling fact to question; it never tells the human what to choose.

Trait Implementations

impl Clone for Decision

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Decision

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

Formats the value using the given formatter.

impl Serialize for Decision

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.