Add artifact package integrity gate

artifact-package-integrity-gate/README.md

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+# Artifact Package Integrity Gate
+
+This module adds a Scientific Data & Code Hosting slice for reviewer-ready research artifact packages. It is self-contained, dependency-free, and synthetic-data-only so reviewers can validate it without credentials, cloud storage, or a running platform.
+
+It covers the issue #14 requirements by validating:
+
+- datasets, notebooks, code, figures, media, and model artifacts with deterministic type classification
+- metadata-aware preview plans for tabular data, notebooks, figures, JSON, model files, and deferred large payloads
+- DataCite, JSON-LD, and schema.org package metadata completeness
+- FAIR access requirements, reusable licenses, reviewer access evidence, version hashes, and persistent links
+- pinned executable environments and rerun commands that only reference hosted artifacts
+- stable export packets with package and source digests for DOI/API/archive workflows
+
+## Local Validation
+
+```sh
+node artifact-package-integrity-gate/test.js
+node artifact-package-integrity-gate/demo.js
+```
+
+## Demo Evidence
+
+- [demo.mp4](demo.mp4) shows the problem, implementation scope, acceptance behavior, and validation commands.
+- [demo.svg](demo.svg) provides a static reviewer dashboard preview.
+- [requirements-map.md](requirements-map.md) maps the implementation to issue #14.
+- [acceptance-notes.md](acceptance-notes.md) lists the reviewer checks.

artifact-package-integrity-gate/acceptance-notes.md

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+# Acceptance Notes
+
+## What This Adds
+
+The `artifact-package-integrity-gate` module gives SCIBASE a deterministic validation layer for hosted scientific data and code packages before they are exposed through persistent links, DOI metadata, reviewer packets, or rerun buttons.
+
+## Why It Is Distinct
+
+This is not a broad storage sketch or another simple FAIR manifest. It focuses on the package boundary where reviewers need to know whether every artifact is hashed, previewable, licensed, metadata-complete, access-controlled, and connected to a pinned executable environment.
+
+## Reviewer Checks
+
+1. Run `node artifact-package-integrity-gate/test.js`.
+2. Run `node artifact-package-integrity-gate/demo.js`.
+3. Confirm the passing package reports `packageReady: true`.
+4. Confirm the broken package test catches missing sha256 hashes, incomplete DataCite fields, unpinned runtimes, and commands that reference missing hosted inputs.
+5. Inspect `demo.svg` or `demo.mp4` for the reviewer-facing workflow summary.
+
+## Payout Conditions Covered
+
+- Issue #14 has a live Algora bounty route.
+- The PR body includes `/claim #14`.
+- The module includes a short demo video artifact.
+- The implementation is dependency-free and locally verifiable.

artifact-package-integrity-gate/demo.js

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+"use strict";
+
+const { evaluateArtifactPackage } = require("./index");
+
+const packageInput = {
+  generatedAt: "2026-05-17T12:00:00.000Z",
+  project: { id: "proj-ocean-sensor-2026", title: "Ocean sensor reproducibility package" },
+  metadata: {
+    datacite: {
+      identifier: "10.5555/scibase.ocean-sensor.2026",
+      creators: ["C. Oceanographer", "D. Data Steward"],
+      titles: ["Ocean sensor reproducibility package"],
+      publisher: "SCIBASE.AI",
+      publicationYear: "2026",
+      resourceType: "Dataset and software",
+    },
+    jsonLd: {
+      "@context": "https://schema.org",
+      "@type": "Dataset",
+      name: "Ocean sensor reproducibility package",
+    },
+    schemaOrg: {
+      "@type": "Dataset",
+      name: "Ocean sensor reproducibility package",
+    },
+  },
+  artifacts: [
+    {
+      id: "sensor-readings",
+      path: "data/sensor-readings.parquet",
+      bytes: 18_000_000,
+      hash: "1".repeat(64),
+      license: "CC-BY-4.0",
+      access: "public",
+      version: 2,
+      previousVersionHash: "2".repeat(64),
+      metadata: { title: "Sensor readings", creators: ["C. Oceanographer"], keywords: ["ocean", "sensor"] },
+    },
+    {
+      id: "calibration-notebook",
+      path: "notebooks/calibration.ipynb",
+      bytes: 900_000,
+      hash: "3".repeat(64),
+      license: "MIT",
+      access: "public",
+      metadata: { title: "Calibration notebook", creators: ["D. Data Steward"], keywords: ["calibration"] },
+    },
+    {
+      id: "temperature-map",
+      path: "figures/temperature-map.png",
+      bytes: 850_000,
+      hash: "4".repeat(64),
+      license: "CC-BY-4.0",
+      access: "restricted",
+      accessJustification: "review-only embargo before journal supplement release",
+      reviewerAccessWindow: "2026-05-17/2026-06-17",
+      metadata: { title: "Temperature anomaly map", creators: ["D. Data Steward"], keywords: ["figure"] },
+    },
+  ],
+  environments: [
+    {
+      id: "python-reproducer",
+      name: "Pinned Python notebook runner",
+      image: "ghcr.io/scibase/ocean-runner@sha256:" + "5".repeat(64),
+      runtimes: ["python", "jupyter"],
+      trigger: "run-analysis-button",
+      commands: [
+        {
+          id: "reproduce-calibration",
+          label: "Reproduce calibration",
+          command: "python scripts/run_notebook.py notebooks/calibration.ipynb",
+          inputs: ["data/sensor-readings.parquet", "notebooks/calibration.ipynb"],
+          outputs: ["figures/temperature-map.png"],
+        },
+      ],
+    },
+  ],
+};
+
+const result = evaluateArtifactPackage(packageInput);
+
+console.log("Artifact package integrity demo");
+console.log(JSON.stringify(result.dashboard, null, 2));
+console.log("Preview plan:");
+for (const artifact of result.artifacts) {
+  console.log(`- ${artifact.path}: ${artifact.preview.previewKind} (${artifact.classification.category})`);
+}
+console.log("Export packet:");
+console.log(JSON.stringify(result.exportPacket, null, 2));