Ready-to-run Fitter configs. Two formats live here:
CLI/MCP format — a single top-level item (+ optional limits/references). Works with Fitter_CLI, Fitter_MCP (fitter_run_file/fitter_run_url) and Fitter_Agent.
Service format — a top-level items array (+ optional http_server, per-item trigger_config/notifier_config). For the long-running Fitter service binary.