{"version":"ew-v3","frozenAt":"2026-10-12","masterCount":35672,"countries":{"England":33755,"Wales":1917},"priorVersion":"ew-v2","status":"E4–E7 implementation released with source gates; E8 final expansion freeze and predictive validation remain open","inventory":{"totalCandidates":62,"totalCalculated":44,"featuresWithBands":38,"totalDeferred":18,"newCandidates":1,"updatedCandidates":12},"baselinePreservation":"Every ew-v1 and ew-v2 public file remains unchanged. ew-v3 replaces only E4–E7 placeholders for the combined view.","lookupScope":"13 E4–E7 candidates on all 35,672 rows. Join v1 and v2 by lsoa; replace their 12 E4–E7 placeholder columns with v3 and add heat_summer_days_gt25. 62 candidates total.","ranking":"One England-and-Wales master, equal LSOA weights. Source coverage alone governs eligibility. Never rerank regional/insurer samples. Partial environmental references are explicitly provisional; crime and speed national bands withheld.","gates":{"heat":"Exact >=25 and >=30 await registered CEDA daily files. Supporting >25 normal separate; >=99% road coverage.","air":"Annual assessed 1 km grids; >=99% mapped-road coverage; 2025 model break.","crime":"36 complete own-force months, no contradictory ID allocation for raw rate; national bands withheld.","speed":">=95% classified eligible road length for raw values; only 1,547 areas eligible, heavily urban; national bands withheld; authority validation outstanding.","insolvency":"Official 2025 authority rates and LAD mapping; inherited context, adult denominator provisional."},"activity":"DfT count-point audit retained. No national pedestrian/cyclist flow deciles inferred from sample counters, commuting or accessibility.","licences":"OGL for official sources; OSM-derived speed database under ODbL 1.0 with © OpenStreetMap contributors. A combined collection does not relabel source licences.","temporalUse":"2025 air/insolvency and 2026 roads/crime editions are retrospective context for prior collision years, not historical as-of forecasts. No prospective 2022 claim.","outcomesUsed":false,"claimsValidation":false}