Function loadCIAContext

Load CIA intelligence context from real CSV files in cia-data/. Sources: • cia-data/party/view_party_performance_metrics_sample.csv – win rates, documents, rebel rate • cia-data/view_riksdagen_party_summary_sample.csv – current seat counts • cia-data/party/distribution_coalition_alignment.csv – inter-party alignment • cia-data/view_riksdagen_committee_decisions.csv – committee decision outcomes

Returns a populated CIAContext or a minimal fallback when files are missing.