List ad accounts

Returns the platform ad accounts available for the given social account (e.g. Meta ad accounts, TikTok advertiser IDs, Google Ads customer IDs).

For TikTok agencies: enumerates every advertiser under every Business Center the token can read (paginated server-side), then chunks the lookup against TikTok's /advertiser/info/ endpoint (which has a per-call cap of ≤100 IDs). Solo advertisers without a BC fall back to the OAuth-time advertiser_ids list. Cached for 1h on the SocialAccount; lazy-refreshed on first call after expiry.

For Google Ads: responds 429 when Google's API quota is temporarily exhausted (instead of an empty list). Retry after a delay.