Load pre-fetched committee data for a given abbreviation from a JSON file.
The file must be a JSON object keyed by committee abbreviation, where each
value conforms to CommitteeData. This allows agentic workflows to
inject real EP committee data into the generator without a live MCP
connection (same pattern as loadEPFeedDataFromFile).
Load pre-fetched committee data for a given abbreviation from a JSON file.
The file must be a JSON object keyed by committee abbreviation, where each value conforms to CommitteeData. This allows agentic workflows to inject real EP committee data into the generator without a live MCP connection (same pattern as loadEPFeedDataFromFile).