v0.3.0, customer accounts

What changed for looot customers in v0.3.0.

• Long-running async jobs that don’t finish in time now park and get rechecked on a backoff schedule for up to 24 hours. A result that comes back empty, or never comes back, is not charged.
• Eight providers joined the catalog on the connect-your-own-account track: Instantly, lemlist, Smartlead, HubSpot, Pipedrive, Attio, Apollo (sequences) and Notion.
• The Connections page now lists “Connect your account” providers separately.
• A feedback button was added to every page.
• The public site grew pricing, how-it-works, agent-client and legal pages, and a Markdown mirror of the catalog for agents to read directly.

Known gaps at this point: one provider (basic-auth) wasn’t yet offered on Connections, the eight new providers showed placeholder tiles until logos were added, and calls made with your own key were $0 until pricing for that case was decided.