When a buyer authorizes SHYLDA for a Deal, the agreed amount is committed to that Deal while the rest of the buyer's balance remains available. The money does not stop being the buyer's money simply because it has been committed to the Deal.
This matters because SHYLDA enforces the Deal rules. It does not become the custodian of the buyer's funds, even where the buyer-owned balance or virtual-account layer is supported through a licensed financial partner.
The Buyer's release authorization is held and applied by the Buyer alone. SHYLDA's release mechanism is designed so that it cannot fire without the Buyer's direct action — SHYLDA does not hold, process, or have access to the Buyer's release authorization at any point. This is not a policy position. It is how the system is built.