KACHE Snapshot and KAN-Like Report Boundary

Summary

ERT now includes a KACHE-style frozen snapshot boundary and a fixed-function KAN-like report-boundary scaffold. This layer supports deterministic public/private report projection after diagnostic artifacts are complete.

The public purpose is to preserve a clean boundary between completed diagnostic artifacts, internal interpretation support, and regular public/client-facing reports.

This is not a formal mathematical Kolmogorov-Arnold Network implementation. It does not introduce trained KAN weights or KAN verdict authority. It is a fixed-function, non-authoritative boundary scaffold over frozen artifacts.

What Changed

The report pathway now has a clearer public/private projection model:

Completed diagnostic artifacts
-> frozen KACHE snapshot boundary
-> fixed-function KAN-like boundary scaffold
-> deterministic projection gates
-> sanitized public/client-private report models
-> regular reports

The core idea is that regular reports should not be generated directly from raw internal diagnostic surfaces. They should be generated from sanitized public or client-private report models.

KACHE Snapshot Boundary

KACHE is used here as a frozen diagnostic snapshot boundary. It is not a public report and it is not a scoring layer.

Its role is to mark a completed diagnostic state so later report projection can operate against a stable boundary instead of a moving internal state.

KACHE is created after diagnostic artifacts are complete.
KACHE is frozen for boundary/reference purposes.
KACHE does not modify source artifacts.
KACHE does not change scores.
KACHE does not change signed evidence.
KACHE does not change replay behavior.

Fixed-Function KAN-Like Scaffold

The current KAN-like scaffold is intentionally limited.

mode: fixed-function
weights active: no
formal trained dependency: no
verdict authority: no
scoring authority: no
report-modification authority: no

The scaffold may support boundary-aware interpretation and report projection discipline, but it does not become a hidden adjudicator and does not generate regular reports directly.

Deterministic Projection Gates

The report boundary separates four conceptual views:

1. Public/client report - public-safe diagnostic summary.
2. Client-private report - more detailed client-facing report, still sanitized.
3. Development-only audit - internal development review of boundary behavior.
4. Local internal view - local-only engineering view, not regular report content.

Regular public and client-private reports are generated only from sanitized report models.

Why This Matters

ERT needs to show useful diagnostic summaries without disclosing the private mechanics that make the diagnostic meaningful. A public report should be understandable, but it should not reveal hidden probes, protected thresholds, raw diagnostic vectors, or implementation details that would weaken the evaluation boundary.

The KACHE/KAN-like boundary helps keep that separation explicit.

What This Is Not

This is not a claim that ERT now contains a trained KAN model. It is not a claim that KAN controls scoring, decides whether a model passed or failed, or has access to hidden provider internals.

The current implementation is a bounded report-boundary scaffold, not a formal KAN research claim.

Public Note

For public communication, the safest phrasing is: KACHE-style frozen snapshot boundary with a fixed-function KAN-like report-boundary scaffold.