feat(orders): PDF footer = issuer name+email, 'Zobrazit objednávku' button, per-currency list totals

- Issued-order PDF: drop the Vystavil/Schválil signature row; footer now shows
  'Vystavil: <name>' + 'E-mail: <email>' from the logged-in user (authData).
- IssuedOrderDetail PDF button 'Export PDF' -> 'Zobrazit objednávku' (already
  opens inline like invoices' 'Zobrazit fakturu').
- New /orders/stats + /issued-orders/stats endpoints sum order total (incl VAT)
  per currency across the active filter; rendered as 'Celkem: …' beneath both
  the received and issued lists. formatMultiCurrency lifted to a shared util.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/admin/pages/Invoices.tsx

@@ -12,6 +12,7 @@ import Forbidden from "../components/Forbidden";
 import apiFetch from "../utils/api";
 import {
   formatCurrency,
+  formatMultiCurrency,
   formatDate,
   czechPlural,
   todayLocalStr,
@@ -70,11 +71,6 @@ const MONTH_NAMES = [
   "prosinec",
 ];
 
-function formatMultiCurrency(amounts: CurrencyAmount[]): string {
-  if (!Array.isArray(amounts) || amounts.length === 0) return "0 Kč";
-  return amounts.map((a) => formatCurrency(a.amount, a.currency)).join(" · ");
-}
-
 function formatCzkWithDetail(
   amounts: CurrencyAmount[],
   totalCzk: number | null | undefined,

src/admin/pages/IssuedOrderDetail.tsx

@@ -956,7 +956,7 @@ export default function IssuedOrderDetail() {
                 )
               }
             >
-              Export PDF
+              Zobrazit objednávku
             </Button>
           )}
           {/* ── Create mode: two-button save ── */}

src/admin/pages/IssuedOrders.tsx

@@ -1,11 +1,16 @@
 import { useState, useEffect, useRef } from "react";
+import { useQuery } from "@tanstack/react-query";
 import { useNavigate, Link as RouterLink } from "react-router-dom";
 import Box from "@mui/material/Box";
 import IconButton from "@mui/material/IconButton";
 import { useAlert } from "../context/AlertContext";
 import { useAuth } from "../context/AuthContext";
 import Forbidden from "../components/Forbidden";
-import { formatCurrency, formatDate } from "../utils/formatters";
+import {
+  formatCurrency,
+  formatDate,
+  formatMultiCurrency,
+} from "../utils/formatters";
 import useTableSort from "../hooks/useTableSort";
 import useDebounce from "../hooks/useDebounce";
 import { usePaginatedQuery } from "../hooks/usePaginatedQuery";
@@ -13,6 +18,7 @@ import { useApiMutation } from "../lib/queries/mutations";
 import apiFetch from "../utils/api";
 import {
   issuedOrderListOptions,
+  issuedOrderStatsOptions,
   type IssuedOrder,
 } from "../lib/queries/issued-orders";
 import {
@@ -142,6 +148,17 @@ export default function IssuedOrders({ month, year }: IssuedOrdersProps) {
     }),
   );
 
+  // Per-currency total over the WHOLE filtered set (not one page). Uses the
+  // SAME filters as the list query so the summary matches what's shown.
+  const statsQuery = useQuery(
+    issuedOrderStatsOptions({
+      search: debouncedSearch,
+      status: status || undefined,
+      month,
+      year,
+    }),
+  );
+
   // Mark first load done in an effect (not during render) to avoid a
   // render-phase ref mutation.
   useEffect(() => {
@@ -363,6 +380,27 @@ export default function IssuedOrders({ month, year }: IssuedOrdersProps) {
             )
           }
         />
+        {(statsQuery.data?.length ?? 0) > 0 && (
+          <Box
+            sx={{
+              display: "flex",
+              justifyContent: "flex-end",
+              mt: 1.5,
+              px: 1,
+              gap: 1,
+              color: "text.secondary",
+              fontSize: "0.9rem",
+            }}
+          >
+            <span>Celkem:</span>
+            <Box
+              component="span"
+              sx={{ fontWeight: 700, color: "text.primary" }}
+            >
+              {formatMultiCurrency(statsQuery.data ?? [])}
+            </Box>
+          </Box>
+        )}
         <Pagination
           page={page}
           pageCount={pagination?.total_pages ?? 1}

src/admin/pages/ReceivedOrders.tsx

@@ -7,12 +7,17 @@ import { useAlert } from "../context/AlertContext";
 import { useAuth } from "../context/AuthContext";
 import Forbidden from "../components/Forbidden";
 import apiFetch from "../utils/api";
-import { formatCurrency, formatDate } from "../utils/formatters";
+import {
+  formatCurrency,
+  formatDate,
+  formatMultiCurrency,
+} from "../utils/formatters";
 import useTableSort from "../hooks/useTableSort";
 import useDebounce from "../hooks/useDebounce";
 import { usePaginatedQuery } from "../hooks/usePaginatedQuery";
 import {
   orderListOptions,
+  orderStatsOptions,
   orderNextNumberOptions,
 } from "../lib/queries/orders";
 import { offerCustomersOptions } from "../lib/queries/offers";
@@ -317,6 +322,17 @@ export default function OrdersReceived({
     }),
   );
 
+  // Per-currency total over the WHOLE filtered set (not one page). Uses the
+  // SAME filters as the list query so the summary matches what's shown.
+  const statsQuery = useQuery(
+    orderStatsOptions({
+      search: debouncedSearch,
+      status: status || undefined,
+      month,
+      year,
+    }),
+  );
+
   // Mark first load done in an effect (not during render) to avoid a
   // render-phase ref mutation.
   useEffect(() => {
@@ -543,6 +559,27 @@ export default function OrdersReceived({
             )
           }
         />
+        {(statsQuery.data?.length ?? 0) > 0 && (
+          <Box
+            sx={{
+              display: "flex",
+              justifyContent: "flex-end",
+              mt: 1.5,
+              px: 1,
+              gap: 1,
+              color: "text.secondary",
+              fontSize: "0.9rem",
+            }}
+          >
+            <span>Celkem:</span>
+            <Box
+              component="span"
+              sx={{ fontWeight: 700, color: "text.primary" }}
+            >
+              {formatMultiCurrency(statsQuery.data ?? [])}
+            </Box>
+          </Box>
+        )}
         <Pagination
           page={page}
           pageCount={pagination?.total_pages ?? 1}