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Global source registry — official agencies, sync health, and approved data provenance.
Trust Level 1 = Official government warning (PAGASA, PHIVOLCS, USGS, NOAA, GDACS). Trust Level 2 = UN-backed humanitarian reports (ReliefWeb, UNICEF, UNHCR). Trust Level 3 = Research-grade datasets (ACLED, UCDP, World Bank). Trust Level 4 = Regional/specialized ops (ICAO, EASA, Copernicus). Trust Level 5 = Manual curated uploads. When sources conflict, the higher-trust source takes precedence.