Feat/m6 duplicate prevention#10

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iamodh merged 6 commits intomainfrom

feat/m6-duplicate-prevention

Feb 25, 2026

Commits on Feb 25, 2026

feat(m6): add uniqueness validation for duplicate registration prevention

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feat(m6): add concurrency test for duplicate registration prevention

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claude
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feat(m6): add RecordNotUnique rescue and duplicate integration test

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docs: add concurrency data integrity strategy document

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fix(security): update rack 3.2.4 → 3.2.5 (CVE-2026-22860, CVE-2026-25500)

iamodh
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claude
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fix(security): update nokogiri 1.19.0 → 1.19.1 (GHSA-wx95-c6cv-8532)

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