broker/pkg/provider/alpaca_omnisub

alpaca_omnisub

Alpaca OmniSub (Omnibus + Sub-accounts) provider for lux/broker.

How it differs from alpaca

	alpaca	alpaca_omnisub
Account model	Standalone individual/joint accounts	Sub-accounts under a single omnibus master
Account creation	account_type = individual/joint	account_type = omnibus_sub_account, omnibus_master_id set
Orders	Scoped to each account	Scoped to each sub-account
Positions	Per-account	Per-sub-account
Transfers (ACH/wire)	Per-account	Routed through omnibus master; internal ledger via journals
Bank relationships	Per-account	On omnibus master
Reconciliation	Per-account	Omnibus aggregate via GetOmnibusSnapshot()
Market data	Alpaca data API	Same Alpaca data API

Environment variables

ALPACA_OMNISUB_API_KEY          # Alpaca broker API key (omnisub-specific)
ALPACA_OMNISUB_API_SECRET       # Alpaca broker API secret
ALPACA_OMNISUB_BASE_URL         # defaults to sandbox
ALPACA_OMNISUB_OMNIBUS_ACCOUNT_ID  # the omnibus master account ID

Both alpaca and alpaca_omnisub can run in parallel on the same registry with independent credentials.