Cross-dataset page per jurisdiction (BE bundle live; fail closed on manifest jurisdictions)

[MaxGhenis]

The Cross-dataset page (/microcosm/datasets) read one global bundle, was nav-gated US-only, and never checked a bundle's jurisdictions against the selected country. Belgium's evaluation bundle now exists (#164; hosted at policyengine/microcosm-evaluation), so:

• Per-country bundle configuration, same pattern as the per-country HF release repos: the unsuffixed CROSS_DATASET_ARTIFACT_{DIR,BASE_URL} stay the US contract; _UK / _BE suffixes for the others (+ CROSS_DATASET_EXPECTED_RUN_ID_<CC>); one cached reader per country; the DIR/URL exclusivity rule applies per country.
• Fail closed: a configured bundle must list the selected country in manifest.jurisdictions (UK or GB accepted for the UK), otherwise the existing 503-style artifact error ("bundle is for jurisdictions BE, not US"). An unconfigured country gets the existing unavailable state naming the country and its variables.
• country threaded through every Cross-dataset API view, hook, catalog and detail link; country switches discard bundle-specific fact/source/filter URL state.
• Nav shows Cross-dataset for every country; page copy and controls come from the bundle's own source labels and group metadata (no US presentation assumptions); the capped-relative-error definition text is unchanged.
• Tests: route (BE-only config serves BE, US stays unconfigured), env resolution, jurisdiction aliasing and mismatch, country-switch URL behaviour, nav visibility, trimmed BE bundle fixtures. 219 pass; tsc --noEmit; next build.

Prod has CROSS_DATASET_ARTIFACT_BASE_URL_BE set; US stays unconfigured until a US bundle is published.

Boundary (Max, today): anything comparable to authoritative government facts belongs on this page and must be visible for other models too; the Scorecard keeps estimates with no such ground truth.

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated (UTC)
calibration-diagnostics	Ready	Preview	Aug 23, 2026 6:11pm