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Internal cartography of local LLMs on Apple Silicon — registered, gated, negative-first. Public atlas at modelmap.io.

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# project: modelmap document: candidate_03 — Localization index (Q1 instrument) author: Simon-Pierre Boucher contact: contact@spboucher.ai website: https://modelmap.io created: 2026-08-12 status: draft

# candidate_03 — Localization index (Q1 instrument)

Assigned by Phase 4 (research/candidate_ranking.md). Core gaps: G17 (+G11/G12 as measurement layers).

First falsifier: the index must read ≈1 on Tracr-compiled circuits and ≈0 on random-init models; otherwise it is broken before touching real models.

Status: assigned — prototyping starts after the mandatory substrate (expH capture-cost frontier, expA/expD noise floors, map-cards v0). Hypothesis will be registered in hypothesis.md before any run (charter §10).