/claim #18

Adds a reproducibility audit gate for scientific bounty submissions.

Covers:

• required deliverable and artifact hash checks
• runtime evidence, lockfile, dependency pin, rerun, and metric drift checks
• restricted-data NDA checks
• reviewer queue decisions, payout gates, signed audit events, and manifest digest
• sample data, tests, requirement map, SVG, GIF, and WebM demo

Demo:

• submission-reproducibility-audit/docs/demo.webm
• submission-reproducibility-audit/docs/demo.gif

Tested:

• cd submission-reproducibility-audit && npm run check
• cd submission-reproducibility-audit && npm test
• cd submission-reproducibility-audit && npm run demo
• rsvg-convert submission-reproducibility-audit/docs/demo.svg -o /tmp/submission-repro-demo.png
• demo.gif opened with Pillow: GIF, 3 frames, 960x540
• gst-discoverer-1.0 submission-reproducibility-audit/docs/demo.webm: VP8 WebM, 3s, 960x540
• git diff –check
• credential pattern scan, no hits