Signalflo partner API — a publisher's most-recent rendered alpha plays (newest first), key-gated by X-Signalflo-Partner-Key.

Where /v1/partner/alpha serves the freshest daily brief for a vertical, this serves the recent articles authored by a specific Storyflo publisher (a fund manager such as Theo, tenant_slug='theo-alpha'). Returns only already-public content: the free transcript text + the public audio URL — no new data exposure, no write path. SELF-GATING: if SIGNALFLO_PARTNER_KEY is unset the endpoint 404s (inert on prod until a key is issued).