cb68cbafdb
Let the operator see, on demand during an open shift, the opening float inherited, cash/card collected so far, pay-ins/pay-outs, and the current expected drawer balance — without closing. GET /api/shift/report (shift:read; 204 when no shift is open) returns the same drawer projection the Z-report computes. Factored that math into a shared ShiftService.#summariseWindow(open, asOf) used by BOTH the X-report (asOf=now, read-only) and close()'s Z-report (asOf=endedAt, signed), so the two can't drift. The X-report appends NOTHING — it's a snapshot, not an accountability mark; the Z-report at close remains the signed record. UI: a "Takings so far" button on the shift control reveals a cyan X-report panel; the header still shows the live drawer total for the at-a-glance figure. Verified against a copy of the live DB: X figures match drawerBalance(), the drawer identity holds, zero events appended, chain still verifies. Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V