Edit a ChatGPT Ads ad group

Changes an ad group's name, maximum bid or context hints, and — because geo targeting is a campaign setting on this platform — optionally the locations the whole parent campaign runs in. Use when: the user has named what to change and what to change it to. Read the ad group first with chatgpt_list_ad_groups so the diff is against something you have shown them. Do not use it to pause or resume: chatgpt_pause_ad_group and chatgpt_resume_ad_group state the risk of that change properly. Do not use it for budgets — those are on the campaign, so use chatgpt_update_campaign. Do not ask it for automatic bidding: Adako only sets fixed bids here, so automatic_bidding: true is refused. The platform's own Maximize Results bidding needs a campaign on a daily budget and has to be set in Ads Manager. The bid's unit follows the campaign objective — a CPM (per 1,000 impressions) for reach, per click for clicks, per conversion for conversions — and the preview shows the old and new bid in that unit. Do not pass place names in the location arguments; resolve them with chatgpt_geo_lookup first. Changing locations here replaces the campaign's whole include or exclude list, country-level targeting included, and therefore affects every ad group under it. The preview shows exactly what is replaced. Returns the ad group read back from the platform, so the new bid is confirmed rather than assumed. A maximum bid far below the market stops winning auctions altogether, which looks like a broken ad group; the preview warns when a change looks like that. At least one field must be given. If the user says "bid higher" without a number, ask how much.