Sidereal + tropical longitudes for all 9 grahas at a specific moment.

The 9-graha block is a real client payload (the live Panchang page fetches /planets/positions to render the planets card), so the response is gzip-negotiated via the audited _json_response_maybe_gzip helper: the DECOMPRESSED body is byte-identical to the old return _attribution_envelope(...) path (no contract/field/value change), and clients that do not advertise Accept-Encoding: gzip (or tiny payloads) get the unchanged JSON body.