Delete a radar and its signals

A new name alone is saved and nothing else happens; so is a folder_id, which moves the radar into that folder of the account. A changed query replaces the whole query, and sources, custom_source_ids or source_group_ids replace what the radar had (one left out stays); either change starts a sweep over the last seven days, stopping one that runs. A changed query takes off the radar, in the same transaction, the signals about a company it takes out, directly or with a group; removed_signals says how many. The signals that matched no filter still in the query are judged again by the sweep, from what was asked of their pages before, and go only if they no longer match; rechecked_signals says how many. A filter, topic or exclusion added removes nothing, nor does a change to a group's members, and a signal a sent issue carries stays. New words for an own-words filter make a new filter: the old words' signals are judged against the new words, and the sweep finds the last seven days again with them. A tender radar takes countries and words instead of a query: each replaces its old list, and a change starts a sweep over the last year, keeping the calls still open. An exchange rate radar takes pairs and interest_rates, each replacing all of its own kind (one left out stays); a price radar takes commodities, which replace all of its commodities. A body with another type's fields (countries, words, pairs or commodities on a news radar; query, sources, custom_source_ids, pairs or commodities on a tender radar; anything but name, pairs, interest_rates and folder_id on an exchange rate radar; anything but name, commodities and folder_id on a price radar) fails with 422 and changes nothing.