Summary

• adds a dependency-free repository branch hypothesis lineage gate for issue #10
• validates experiment branches against declared hypotheses, frozen protocol snapshots, component hashes, result lineage, reproducibility runs, fork attribution, semantic version impact, and citation notes
• includes synthetic sample data, local tests, a demo script, and reviewer artifacts under repository-branch-hypothesis-lineage-gate/reports/

Verification

• node repository-branch-hypothesis-lineage-gate/test.js
• node repository-branch-hypothesis-lineage-gate/demo.js
• node --check repository-branch-hypothesis-lineage-gate/index.js
• node --check repository-branch-hypothesis-lineage-gate/sample-data.js
• node --check repository-branch-hypothesis-lineage-gate/demo.js
• node --check repository-branch-hypothesis-lineage-gate/test.js
• ffprobe -v error -show_entries format=duration,size -show_entries stream=codec_name,width,height -of default=noprint_wrappers=1 repository-branch-hypothesis-lineage-gate/reports/demo.mp4
• git diff --check

/claim #10