i18n: relabel X/Z report UI to plain language (keep X/Z in code)

The "X-REPORT / Z-REPORT" labels are till-accounting jargon operators don't
recognize. Relabel the user-facing strings to plain wording in both catalogs —
SQ: "ARKËTIMET DERI TANI" / "MBYLLJA E TURNIT"; EN: "TAKINGS SO FAR" /
"SHIFT CLOSE". The X/Z naming stays in code (xReport/zReport keys, the
shift_z_report event, currentReport) and the wiki.

Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V

apps/web/src/lib/i18n/en.ts

@@ -527,11 +527,11 @@ export const en: Catalog = {
     voucherRecorded: "Voucher {{no}} recorded. Drawer now {{amount}}.",
     enterPositive: "Enter a positive amount.",
     drawerNow: "Drawer now {{amount}}.",
-    zReport: "Z-REPORT",
+    zReport: "SHIFT CLOSE",
     viewTakings: "Takings so far",
-    xReport: "X-REPORT (so far)",
+    xReport: "TAKINGS SO FAR",
     asOf: "as of",
-    xReportHint: "Read-only snapshot — nothing is recorded. The Z-report at close will sign these figures.",
+    xReportHint: "View only — nothing is recorded. These figures are signed when the shift is closed.",
     payments: "Payments:",
     cash: "Cash:",
     card: "Card:",

apps/web/src/lib/i18n/sq.ts

@@ -539,11 +539,11 @@ export const sq = {
     voucherRecorded: "Mandati {{no}} u regjistrua. Arka tani {{amount}}.",
     enterPositive: "Shkruaj një shumë pozitive.",
     drawerNow: "Arka tani {{amount}}.",
-    zReport: "RAPORT Z",
+    zReport: "MBYLLJA E TURNIT",
     viewTakings: "Arkëtimet deri tani",
-    xReport: "RAPORT X (deri tani)",
+    xReport: "ARKËTIMET DERI TANI",
     asOf: "deri më",
-    xReportHint: "Pamje vetëm për lexim — asgjë nuk regjistrohet. Raporti Z në mbyllje i nënshkruan këto shifra.",
+    xReportHint: "Vetëm për shikim — asgjë nuk regjistrohet. Këto shifra nënshkruhen kur mbyllet turni.",
     payments: "Pagesa:",
     cash: "Para:",
     card: "Kartë:",