Module lifecycle 

Pure-function lifecycle + decay layer. Functions take inputs, return outputs, never touch disk. M5b’s sweep calls these to decide transitions and persist; M5a’s doctor calls them for read-only display.

Structs

LifecycleThresholds

Runtime-immutable lifecycle thresholds, derived from SkillLifecycleConfig.

Enums

NoteKind

The two knowledge shapes a Category::Note skill can carry.

Constants

AUTO_ARCHIVE_AGE_DAYS

AUTO_ARCHIVE_CONFIDENCE

DEMOTE_EMERGING_SUCCESS_RATE

DEMOTE_EMERGING_USES

Demotion thresholds — values that MUST drop BELOW. Hysteresis: lower than the symmetric promotion threshold to prevent flap.

DEMOTE_STABLE_SUCCESS_RATE

DEMOTE_STABLE_USES

DEPRECATED_NO_SUCCESS_DAYS

DEPRECATED_SUCCESS_RATE

MIN_CONFIDENCE

MIN_DWELL_HOURS

NOTE_FACT_HALF_LIFE_FACTOR

Default half-life multiplier for kind=fact notes.

NOTE_RULE_HALF_LIFE_FACTOR

Default half-life multiplier for kind=rule notes.

PROMOTE_DRAFT_USES

Promotion thresholds — values that MUST be exceeded.

PROMOTE_EMERGING_AGE_DAYS

PROMOTE_EMERGING_SUCCESS_RATE

PROMOTE_EMERGING_USES

PROMOTE_STABLE_AGE_DAYS

PROMOTE_STABLE_SUCCESS_RATE

PROMOTE_STABLE_USES

Functions

calculate_decay

Compute decayed confidence given an anchor, last success time, and the half-life for the current lifecycle state.

cap_for_provenance

Cap a proposed lifecycle state for LLM-authored, uncurated skills.

half_life_days

Half-life (days) for confidence decay, indexed by current state.

half_life_factor_for

Decay half-life multiplier for manifest under thresholds t — notes get per-kind curves; everything else (and a missing manifest) is 1.0.

lifecycle_rank

Total order over lifecycle states. Public because the federation snapshot floor (mur-core) compares against the same ranking — a duplicated table drifting from this one would silently change what federates.

next_state

Compute what state the skill should be in given its current stats and the current time. PURE — does not mutate. Idempotent: calling this twice with the same inputs returns the same output.

note_kind

Kind of a note manifest: Category::Note + a rule tag → Rule; a plain note is a Fact (facts are the default larval form; rules are explicit). Non-note skills have no kind.

on_promotion

Called by the M5b sweep AFTER persisting a promotion. Resets the confidence anchor so the new half-life applies from current, not stale, confidence. Without this, a skill promoted from Draft to Emerging would carry its already-decayed anchor under the longer Emerging half-life and appear artificially fresh forever.

transition_allowed

Returns true if the transition from from to to may be persisted right now. Even when next_state says a transition is warranted, this guard prevents: