MEON_R2 V37 External Verifier Package: Reproducible r0-only Hydro-Envelope Evidence Chain for a Robust MOND/RAR Residual Correction

This archive contains the frozen MEON_R2 V37 external verifier package for a reproducible r0-only hydro-envelope correction test against a locked MOND/RAR baseline. The package bundles the validated V33 hard-pass result, the V34 posthoc stress audit, the V35 reproducibility freeze, the V36 final report package, and an external verification script. The V33 analysis identifies a robust empirical winner, 2T_GRAD_R0_2 + WALL_EDGE_1over6__MASSIVE_LOGISTIC_VOBS_200, which passes the hard Occam criteria against the locked MOND/RAR baseline with negative AIC/BIC deltas and bootstrap-supported stability. The V34 posthoc audit confirms that this result remains stable under error-model stress tests, galaxy-subset tests, removal tests, galaxy bootstrap with refit, and placebo feature-shuffle tests. V35 freezes the validated V33 and V34 artifacts by SHA256 hash, V36 provides a final report package, and V37 adds an external verifier for independent package-level validation. This release should be understood as a reproducible empirical evidence bundle rather than a completed derivation of the underlying field theory. It establishes a frozen phenomenological constraint that any subsequent MEON_R2 field-theory interpretation must reproduce: an r0-only hydro-envelope residual structure involving an r0-gradient component, an outer-wall/edge component, and a massive-system damping factor, without invoking SMBH terms or local dynamo terms. The archive includes input ZIPs, evidence digests, summary reports, claim matrices, hash manifests, and the script verify_meon_r2_chain.py, which checks the internal consistency of the evidence chain. The final V37 package reports PASS_V37_EXTERNAL_VERIFIER_PACKAGE with package SHA256 6d442cd7c52bad3024715725811ca9a01af3606f3cbf7dcbde12bcec5da15beb.