V3 deterministic structured-data path extraction pack. By-value connector composition (service_kind=cli, no separate ingredient): the local dasel CLI reads one trusted local structured-data path and extracts a selector as JSON via structured.extract_path. Dasel selectors are path-oriented and intentionally narrower than exposing an arbitrary jq program. This operation is path-based value output because the selected data is returned on stdout. Requires dasel on PATH (Debian/Ubuntu: apt install dasel). Local and no-egress.