Robot Start endpoint

POST /robot/start. Content-Type: application/json. API key in body; special Authorization header. Body: api_key, robot_version_uuid, magic_number (EAs only), account_currency, initial_balance, initial_equity, static_fields, session_symbols (EAs only). Indicators omit magic_number and session_symbols; static_fields.expert_magic is 0.

Wait for account data (up to 10s), collect static fields (AccountInfo, TerminalInfo, MQLInfo), build payload, POST /robot/start. On success: store session_id, JWT, expires_in; validate robot_config (Robots); process initial change requests (Robots); start heartbeat timer.