Error
Inventory
Open a count session (comptage / inventaire physique)
Opens a physical inventory count (comptage) for one shop from a seeded set of lines (each a SKU with its book quantity and unit cost in cents). Every line starts uncounted (countedQuantity: null); record counts against it, then close to emit the valued adjustment. 409s when the session id already exists.
POST
Error
Authorizations
Authorization: Bearer <token>. Accepts EITHER a Keycloak access token (scopes-in-token) OR an opaque POS session token; both resolve to the same pos.* scope vocabulary the route guards enforce.
Body
application/json

