GenServer that deserializes TDLib JSON into Elixir structs and forwards them to the app.

Receives raw JSON strings from Sexy.TDL.Backend, decodes them, and recursively converts nested @type objects into the corresponding Sexy.TDL.Object.* structs.

Started automatically by Sexy.TDL.Riser — not called directly.

Event types

The handler forwards three kinds of messages to app_pid:

• {:recv, struct} — deserialized TDLib object (e.g. %Sexy.TDL.Object.UpdateNewMessage{})
• {:proxy_event, text} — proxychains output lines
• {:system_event, type, details} — port failures, exits, missing proxy config