Jordan Ramos 520f50fbbf Fix duplicate failing metrics on same asset across compliance endpoints ...

Deduplicate (hostname, metric_id) rows across verticals using DISTINCT ON in
GET /items, GET /items/:hostname, GET /vcl/stats (heavy-hitters + forecast),
GET /mttr, and persistUpload() snapshot block. Add defensive groupByHostname
Set and hostname_status CTE for snapshot classification.

Includes 38 property-based tests (11 exploration + 27 preservation) covering
all six affected sites.

Closes #13

2026-05-18 15:57:10 -06:00

48 KiB

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