Get organization settings. THIS IS THE ENTRY POINT for anything configurable: call it with no filters first to get the full map. Settings are indexed on two axes — `group` (the sections a human sees in the settings screen: profile, availability, client_fields, communication, reminders, automations, finances, delivery, cancellation, tax) and `chapter` (the onboarding-interview sequence: basics, availability, communication, finances, policies, reminders, client_data). Prefer `group`. Or pass `keys` for specific settings (comma-separated, e.g. "policies.noShowMaxStrikes,finances.clientPaymentTiming"). Covers ~88 keys including cancellation-policy tiers, granular reminder timing, dunning sequence, retention, delivery verification and the SII tax profile. The response also carries `meta` (label, type, valid options and dependencies per key) and `panels` — the configuration surfaces that are NOT scalar settings (bank accounts, payment credentials, API keys, members): each panel names the tools that cover it, or states why none does.