This deposit contains the Phase 4C measurement-layer audit manuscript, "Validating the Measurement Layer: Auditing Overlay Labels for Nonequilibrium Directionality Markers" plus two reproducibility bundles. The primary reproducibility bundle (phase4_writeup_release_pack_20260116_v6_minimal.zip) includes the tabular inputs and derived audit artifacts referenced in the paper, including the candidate and finalist selection tables, the coded overlay table, subset20 audit labels, and per-field audit metric CSVs. A SHA256 sidecar file is provided for integrity verification. A supplementary robustness bundle (llm_poisoned_evidence_audit_20260120_v1.zip) contains non-blind "poisoned evidence" excerpt-sufficiency audit outputs and the prompts used to generate them. This companion bundle is intended only to support the robustness check described in the manuscript and does not constitute an independent validation of the overlay labels. A SHA256 sidecar file is provided for integrity verification. Scripts are not included in these bundles; the release is intended to support transparent inspection and independent recalculation of the reported counts and audit confusion matrices from the included CSV artifacts. v1.0.1: Set manuscript as Preview.v1.0.2: Style-only update. Removed PDF link highlighting/boxes from wrapped \url{} text (no content or results changes).v1.0.3: Manuscript-only correction: Figure 1 (diagram and caption) now references run004/phase4_run004_INDEX.md (literal file index) instead of the audit_metrics__*_subset20.csv placeholder pattern. All data bundles and checksums unchanged. Manuscript SHA256: ece8eef9a2d88ad28e67947d7d5b745e190b51c659a96f70530e006aea357610. FREEZE NOTE - Phase 4C measurement-layer baseline (Zenodo record DOI: 10.5281/zenodo.18378326) Status: Frozen baseline at Zenodo version v1.0.3. No post-freeze edits to the listed artifacts under the same filenames. Included artifacts (frozen):1) Manuscript PDF - Validating the Measurement Layer Auditing Overlay Labels for Nonequilibrium Directionality Markers.pdf - Manuscript SHA256: ece8eef9a2d88ad28e67947d7d5b745e190b51c659a96f70530e006aea357610 - Checksum sidecar file is deposited alongside the PDF. 2) Minimal reproducibility bundle (core) - phase4_writeup_release_pack_20260116_v6_minimal.zip - SHA256: e43fbd9fd810ef9574021a0f918bbc251dbebc4d0507f64ed1e2415f9ce460c2 - Sidecar: phase4_writeup_release_pack_20260116_v6_minimal.zip.sha256.txt - Note: MANIFEST_SHA256.csv inside the zip is the authoritative per-file inventory and hash list. 3) Companion supplementary bundle (poisoned LLM evidence-log sufficiency check) - llm_poisoned_evidence_audit_20260120_v1.zip - SHA256: 0f9cb06494844dc04b644ad0b1466a4ede11b0086da2a9f61b6df6dafc19e77b - Sidecar: llm_poisoned_evidence_audit_20260120_v1.zip.sha256.txt - Note: ZIP-level SHA256 sidecars are the authoritative integrity check for this supplementary bundle. Explicit exclusions (out of scope / not in bundle):- No scripts or executable verification code are included in the minimal release pack.- No inter-rater reliability (IRR) module or IRR results are included (single-rater subset20 audit only).- No seed DOI list / coverage-audit output artifact / overlap statistics are included; no coverage-overlap claims are made. Immutability rule:- Do not modify, replace, or re-upload any frozen file under the same name.- Any correction or extension must be released as a new Zenodo version and/or a new versioned artifact with a new checksum.