Module inference_methods 

Inference-method registry per docs/concepts/librarian-pipeline.md § 5.

Fourteen named methods, each with:

1. A parent-count rule (exactly 1, exactly 2, N ≥ 2, N ≥ 1, etc.).
2. A deterministic confidence formula computed over parent confidences.
3. A staleness predicate — the condition under which the method’s output must be flagged stale if a parent is superseded.

All arithmetic is integer fixed-point at the u16 confidence resolution (per ir-canonical-form.md § 3.1) so output is bit-identical across architectures. Intermediate products use u128 to accommodate up to eight 16-bit parents without overflow; methods accepting more than eight parents cap their input at eight and return InferenceMethodError::TooManyParents otherwise (this bounded-determinism caveat is flagged in CHANGELOG pending a follow-up log-table implementation for unbounded N).

Enums

InferenceMethod

One of the 14 registered inference methods. Every Inferential memory’s method field resolves to a symbol whose canonical name maps to one of these variants.

InferenceMethodError

Errors from InferenceMethod::compute.

ParentCountRule

Parent-count constraint for a method.

StalenessRule

Staleness predicate — when the method’s output is flagged stale.