Rewrite per Max feedback: the ADR no longer triggers a switch to Alpha
Vantage Premium 49.99 USD/mo. It only overrides the Tiingo Power
pre-designation in ADR 0011 with Alpha Vantage Premium as the new
bascule target, validated empirically via free tier.
Yahoo best-effort stays in prod. Bascule deferred to a real trigger
(first paying licensee, or first formal complaint, or saturated
incidents). The ToS email to support@alphavantage.co is deferred to the
same trigger — no upfront paranoid effort.
Status flips from Proposed to Accepted (no suspensive condition).
Refs maximus-api#41
7fe509ab17