Export the signed fiscal journal
Exports a register chain’s full, ordered signature journal (journal fiscal) plus its FRESHLY recomputed integrity verdict — tamper / gap / broken-link detection over the chaînage (hash chain). store (the chain id) is REQUIRED; without it the route 400s. An empty chain exports an empty, vacuously-valid journal. This is the inalterable archive an auditor exports for offline review.
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.
Query Parameters
REQUIRED — the register chain id (per store). Missing → 400.
Optional UTC calendar day (YYYY-MM-DD) to window the period. Malformed → 400.

