Export coverage

operational-statusoperational

Question

Report present/absent/failed chunk accounting for the /export acquisition.

Verdict

Operational acquisition-status snapshot (present/absent/failed chunk accounting), not a fixed research verdict. Figures move as the /export acquisition proceeds; treat as current-as-of-generation only.

Population: 413 items, 2,891 chunks.
Resolution: n/a -- operational acquisition-status snapshot.
Cutoff: Current as of generation; figures move as acquisition proceeds.
Baseline: n/a -- operational status, not benchmarked against a null.

Limitations

Absent and failed chunks are reported as distinct outcomes, never collapsed; not a fixed research verdict.

Notes

Explicitly guards the cache invariant: absent and failed chunks are reported as distinct outcomes, never collapsed (docs/writeup/failure-stories.md story 2).

Source

Citation: po-research:export-coverage:b5031c0fa314bd74
Write-up: docs/research/export-coverage.md
Data: docs/research/export-coverage.json, docs/research/export-coverage-by-item-year.csv
Artifact: research-index.json v1 — sha256:cb3d976779a5cbcb4188039a8d26d5e558a2d844030a638c2f16fe5a8eb0a2fe
Build data cutoff: 2026-08-12
Issues: #40