ee64b7e95c
Surfaces the public-statistics provenance for the contact-mode probability tiers so generated risk numbers are auditable and attributed (not RAG — ~a dozen stable aggregate facts are better as a license-tagged code table). - risk_data_sources.go: RiskEvidence register (Eurostat ESAW figures + CC BY 4.0 attribution) for the documented contact modes; RiskDataSourcesNote. - risk_suggestion.go: the W justification now cites the actual ESAW share + license where documented; RiskSuggestion gains a data_source field. - GET /iace/risk-data-sources returns the evidence register + attribution. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>