25 lines
861 B
Markdown
25 lines
861 B
Markdown
# US01-04 — Detect and Decide Duplicates
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Epic: [E01](../E01-shared-identity-inventory.md)
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As a user, I want explainable duplicate clusters and reversible decisions so redundant
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copies are excluded without collapsing distinct photos automatically.
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## Acceptance criteria
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- Donor exact, normalized-pixel, and perceptual hash behavior is extracted and
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versioned.
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- Confidence bands distinguish automatic exact matches from fuzzy review candidates.
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- Canonical, variant, not-duplicate, and deferred decisions persist with evidence.
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- New contradictory members reopen reviewed clusters; canonical links cannot cycle.
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## Automated tests
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- Golden corpus tests assert hash relationships and confidence classes.
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- Property/integration tests cover clustering, negative links, reversals, new members,
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and persistence after restart.
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## Dependencies
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- US01-03
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