CDIP v3.1 PERIMETER_AUX Fisher–Finsler Stratification Specification Draft v0.2-RC (NI-2, Observational Sidecar, Alerts-Only)

This document specifies PERIMETER_AUX/FISHER_FINSLER as a strict NI-2 information-geometric sidecar layer for CDIP v3.*. It formalizes the dual-strand posture as: (i) a Fisher–Rao statistical manifold for conservative inference (“Φ-strand”) and (ii) a Finsler direction-dependent cost geometry for flexible intention dynamics (“H-strand”). A Legendre–Fenchel duality is used as a proposal/verification protocol between strands. This v0.2-RC draft closes all release blockers by: (a) mandatory model-family declaration with hash commitment, (b) a fully deterministic gate semantics table (INAD/ALERT/local-FAIL), and (c) minimal toy examples for both Fisher and Finsler with fully copy-paste policy/spec blocks and example leaves. All outputs are alerts-only ingestion: no upstream gate order changes, no Telomere control coupling, and no TAO/FQC verdict lifting.