`osaat diff`

Status: skeleton — full body in Phase 2.

Diff two audit reports.

Usage

osaat diff <old.json> <new.json> [--format <text|json|markdown>]

Each report is matched record-by-record on BundleID (macOS) or PkgID (Linux/Unix), falling back to Name + Version when neither is set.

Marker	Meaning
`+`	Present in the new report, missing from the old.
`-`	Present in the old report, missing from the new.
`~`	Present in both, with at least one differing field (version, source, signing, etc.).

Daily drift:

osaat diff ~/backup/osaat-2026-05-09/report.json ~/backup/osaat-2026-05-16/report.json

Pre/post migration check:

osaat diff ~/backup/old-mac/report.json ~/backup/new-mac/report.json

Machine-readable:

osaat diff --format json a.json b.json | jq '.changes[] | select(.kind == "removed")'