feat(mui): migrate Audit Log onto MUI kit

Replaces admin-* CSS, FormModal, FormField, AdminDatePicker, and legacy
Pagination with PageHeader, FilterBar, Card, DataTable, Modal, Select,
DateField, TextField, StatusChip, Pagination, EmptyState, LoadingState.
All filter params, useQuery key, cleanupMutation, DELETE_ALL_AUDIT token
logic, and invalidate: ["audit-log"] preserved verbatim.

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

src/admin/pages/AuditLog.tsx

@@ -1,17 +1,31 @@
 import { useState } from "react";
 import { useQuery } from "@tanstack/react-query";
 import { motion } from "framer-motion";
+import Box from "@mui/material/Box";
+import Typography from "@mui/material/Typography";
 import { useAuth } from "../context/AuthContext";
 import { useAlert } from "../context/AlertContext";
 import Forbidden from "../components/Forbidden";
-import Pagination from "../components/Pagination";
-import FormField from "../components/FormField";
-import FormModal from "../components/FormModal";
-import AdminDatePicker from "../components/AdminDatePicker";
 import { czechPlural } from "../utils/formatters";
 import apiFetch from "../utils/api";
 import { useApiMutation } from "../lib/queries/mutations";
 import { ENTITY_TYPE_LABELS } from "../lib/entityTypeLabels";
+import {
+  Button,
+  Card,
+  DataTable,
+  Pagination,
+  Modal,
+  Select,
+  DateField,
+  TextField,
+  StatusChip,
+  PageHeader,
+  FilterBar,
+  EmptyState,
+  LoadingState,
+  type DataColumn,
+} from "../ui";
 
 const API_BASE = "/api/admin";
 
@@ -30,19 +44,23 @@ const ACTION_LABELS: Record<string, string> = {
   access_denied: "Přístup odepřen",
 };
 
-const ACTION_BADGE_CLASS: Record<string, string> = {
-  create: "admin-badge-success",
-  update: "admin-badge-info",
-  delete: "admin-badge-danger",
-  login: "admin-badge-secondary",
-  login_failed: "admin-badge-danger",
-  logout: "admin-badge-secondary",
-  view: "admin-badge-info",
-  activate: "admin-badge-success",
-  deactivate: "admin-badge-warning",
-  password_change: "admin-badge-info",
-  permission_change: "admin-badge-warning",
-  access_denied: "admin-badge-danger",
+// Maps legacy admin-badge-* CSS class suffixes → StatusChip color
+const ACTION_CHIP_COLOR: Record<
+  string,
+  "success" | "info" | "warning" | "error" | "default"
+> = {
+  create: "success",
+  update: "info",
+  delete: "error",
+  login: "default",
+  login_failed: "error",
+  logout: "default",
+  view: "info",
+  activate: "success",
+  deactivate: "warning",
+  password_change: "info",
+  permission_change: "warning",
+  access_denied: "error",
 };
 
 const ACTION_OPTIONS = Object.entries(ACTION_LABELS).map(([value, label]) => ({
@@ -53,6 +71,29 @@ const ENTITY_OPTIONS = Object.entries(ENTITY_TYPE_LABELS).map(
   ([value, label]) => ({ value, label }),
 );
 
+const CLEANUP_DAYS_OPTIONS = [
+  { value: "30", label: "30 dní" },
+  { value: "60", label: "60 dní" },
+  { value: "90", label: "90 dní" },
+  { value: "180", label: "180 dní" },
+  { value: "365", label: "1 rok" },
+  { value: "0", label: "Vše" },
+];
+
+const TrashIcon = (
+  <svg
+    width="14"
+    height="14"
+    viewBox="0 0 24 24"
+    fill="none"
+    stroke="currentColor"
+    strokeWidth="2"
+  >
+    <polyline points="3 6 5 6 21 6" />
+    <path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2" />
+  </svg>
+);
+
 interface AuditLogEntry {
   id: number;
   created_at: string;
@@ -82,9 +123,10 @@ export default function AuditLog() {
     date_to: "",
   });
   const [page, setPage] = useState(1);
-  const [perPage, setPerPage] = useState(50);
+  const [perPage] = useState(50);
   const [showCleanup, setShowCleanup] = useState(false);
-  const [cleanupDays, setCleanupDays] = useState(90);
+  // cleanupDays stored as string for the kit Select; converted to number at the boundary
+  const [cleanupDaysStr, setCleanupDaysStr] = useState("90");
 
   const { data: logsData, isPending } = useQuery({
     queryKey: [
@@ -154,16 +196,8 @@ export default function AuditLog() {
     setPage(1);
   };
 
-  const handlePageChange = (newPage: number) => {
-    setPage(newPage);
-  };
-
-  const handlePerPageChange = (newPerPage: number) => {
-    setPage(1);
-    setPerPage(newPerPage);
-  };
-
   const handleCleanup = async () => {
+    const cleanupDays = Number(cleanupDaysStr);
     try {
       // Backend requires this literal confirmation token when wiping everything.
       await cleanupMutation.mutateAsync({
@@ -181,229 +215,162 @@ export default function AuditLog() {
   };
 
   if (isPending && logs.length === 0) {
-    return (
-      <div className="admin-loading">
-        <div className="admin-spinner" />
-      </div>
-    );
+    return <LoadingState />;
   }
 
+  const columns: DataColumn<AuditLogEntry>[] = [
+    {
+      key: "created_at",
+      header: "Čas",
+      width: "16%",
+      mono: true,
+      render: (log) => formatDatetime(log.created_at),
+    },
+    {
+      key: "username",
+      header: "Uživatel",
+      width: "14%",
+      bold: true,
+      render: (log) => log.username || "-",
+    },
+    {
+      key: "action",
+      header: "Akce",
+      width: "14%",
+      render: (log) => (
+        <StatusChip
+          label={ACTION_LABELS[log.action] || log.action}
+          color={ACTION_CHIP_COLOR[log.action] ?? "default"}
+        />
+      ),
+    },
+    {
+      key: "entity_type",
+      header: "Typ entity",
+      width: "14%",
+      render: (log) =>
+        ENTITY_TYPE_LABELS[log.entity_type || ""] || log.entity_type || "-",
+    },
+    {
+      key: "description",
+      header: "Popis",
+      width: "30%",
+      render: (log) => log.description || "-",
+    },
+    {
+      key: "user_ip",
+      header: "IP",
+      width: "12%",
+      mono: true,
+      render: (log) => log.user_ip || "-",
+    },
+  ];
+
   return (
-    <div>
+    <Box>
       <motion.div
-        className="admin-page-header"
         initial={{ opacity: 0, y: 12 }}
         animate={{ opacity: 1, y: 0 }}
         transition={{ duration: 0.25 }}
       >
-        <div>
-          <h1 className="admin-page-title">Audit log</h1>
-          {pagination && (
-            <p className="admin-page-subtitle">
-              {pagination.total}{" "}
-              {czechPlural(pagination.total, "záznam", "záznamy", "záznamů")}
-            </p>
-          )}
-        </div>
-        <button
-          className="admin-btn admin-btn-secondary admin-btn-sm"
-          onClick={() => setShowCleanup(true)}
-        >
-          <svg
-            width="14"
-            height="14"
-            viewBox="0 0 24 24"
-            fill="none"
-            stroke="currentColor"
-            strokeWidth="2"
-          >
-            <polyline points="3 6 5 6 21 6" />
-            <path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2" />
-          </svg>
-          Vyčistit
-        </button>
+        <PageHeader
+          title="Audit log"
+          subtitle={
+            pagination
+              ? `${pagination.total} ${czechPlural(pagination.total, "záznam", "záznamy", "záznamů")}`
+              : undefined
+          }
+          actions={
+            <Button
+              variant="outlined"
+              startIcon={TrashIcon}
+              onClick={() => setShowCleanup(true)}
+            >
+              Vyčistit
+            </Button>
+          }
+        />
       </motion.div>
 
-      <FormModal
+      {/* Cleanup Modal */}
+      <Modal
         isOpen={showCleanup}
         onClose={() => !cleanupMutation.isPending && setShowCleanup(false)}
         onSubmit={handleCleanup}
         title="Vyčistit audit log"
-        submitLabel="Smazat"
+        submitText="Smazat"
         loading={cleanupMutation.isPending}
       >
-        <p className="admin-confirm-message">Smazat záznamy starší než:</p>
-        <div style={{ margin: "0.75rem 0", maxWidth: "200px" }}>
-          <select
-            className="admin-form-select"
-            value={cleanupDays}
-            onChange={(e) => setCleanupDays(parseInt(e.target.value))}
-          >
-            <option value={30}>30 dní</option>
-            <option value={60}>60 dní</option>
-            <option value={90}>90 dní</option>
-            <option value={180}>180 dní</option>
-            <option value={365}>1 rok</option>
-            <option value={0}>Vše</option>
-          </select>
-        </div>
-        <p
-          className="admin-confirm-message"
-          style={{ fontSize: "12px", opacity: 0.6 }}
-        >
-          Tato akce je nevratná.
-        </p>
-      </FormModal>
-
-      <motion.div
-        className="admin-card mb-4"
-        initial={{ opacity: 0, y: 12 }}
-        animate={{ opacity: 1, y: 0 }}
-        transition={{ duration: 0.25, delay: 0.06 }}
-      >
-        <div className="admin-card-body">
-          <div className="admin-form-row admin-form-row-5">
-            <FormField label="Hledat">
-              <input
-                type="text"
-                className="admin-form-input"
-                placeholder="Popis, uživatel..."
-                value={filters.search}
-                onChange={(e) => handleFilterChange("search", e.target.value)}
-              />
-            </FormField>
-            <FormField label="Akce">
-              <select
-                className="admin-form-select"
-                value={filters.action}
-                onChange={(e) => handleFilterChange("action", e.target.value)}
-              >
-                <option value="">Všechny</option>
-                {ACTION_OPTIONS.map((opt) => (
-                  <option key={opt.value} value={opt.value}>
-                    {opt.label}
-                  </option>
-                ))}
-              </select>
-            </FormField>
-            <FormField label="Typ entity">
-              <select
-                className="admin-form-select"
-                value={filters.entity_type}
-                onChange={(e) =>
-                  handleFilterChange("entity_type", e.target.value)
-                }
-              >
-                <option value="">Všechny</option>
-                {ENTITY_OPTIONS.map((opt) => (
-                  <option key={opt.value} value={opt.value}>
-                    {opt.label}
-                  </option>
-                ))}
-              </select>
-            </FormField>
-            <FormField label="Od">
-              <AdminDatePicker
-                mode="date"
-                value={filters.date_from}
-                onChange={(val: string) => handleFilterChange("date_from", val)}
-              />
-            </FormField>
-            <FormField label="Do">
-              <AdminDatePicker
-                mode="date"
-                value={filters.date_to}
-                onChange={(val: string) => handleFilterChange("date_to", val)}
-              />
-            </FormField>
-          </div>
-        </div>
-      </motion.div>
-
-      <motion.div
-        className="admin-card"
-        initial={{ opacity: 0, y: 12 }}
-        animate={{ opacity: 1, y: 0 }}
-        transition={{ duration: 0.25, delay: 0.08 }}
-      >
-        <div className="admin-card-body">
-          <div className="admin-table-responsive">
-            {isPending ? (
-              <div className="admin-loading">
-                <div className="admin-spinner" />
-              </div>
-            ) : (
-              <table className="admin-table">
-                <thead>
-                  <tr>
-                    <th>Čas</th>
-                    <th>Uživatel</th>
-                    <th>Akce</th>
-                    <th>Typ entity</th>
-                    <th>Popis</th>
-                    <th>IP</th>
-                  </tr>
-                </thead>
-                <tbody>
-                  {logs.length === 0 && (
-                    <tr>
-                      <td colSpan={6}>
-                        <div className="admin-empty-state">
-                          <div className="admin-empty-icon">
-                            <svg
-                              width="28"
-                              height="28"
-                              viewBox="0 0 24 24"
-                              fill="none"
-                              stroke="currentColor"
-                              strokeWidth="1.5"
-                            >
-                              <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z" />
-                              <polyline points="14 2 14 8 20 8" />
-                              <line x1="16" y1="13" x2="8" y2="13" />
-                              <line x1="16" y1="17" x2="8" y2="17" />
-                            </svg>
-                          </div>
-                          <p>Žádné záznamy k zobrazení</p>
-                        </div>
-                      </td>
-                    </tr>
-                  )}
-                  {logs.length > 0 &&
-                    logs.map((log) => (
-                      <tr key={log.id}>
-                        <td className="admin-mono">
-                          {formatDatetime(log.created_at)}
-                        </td>
-                        <td className="fw-500">{log.username || "-"}</td>
-                        <td>
-                          <span
-                            className={`admin-badge ${ACTION_BADGE_CLASS[log.action] || "admin-badge-secondary"}`}
-                          >
-                            {ACTION_LABELS[log.action] || log.action}
-                          </span>
-                        </td>
-                        <td>
-                          {ENTITY_TYPE_LABELS[log.entity_type || ""] ||
-                            log.entity_type ||
-                            "-"}
-                        </td>
-                        <td>{log.description || "-"}</td>
-                        <td className="admin-mono">{log.user_ip || "-"}</td>
-                      </tr>
-                    ))}
-                </tbody>
-              </table>
-            )}
-          </div>
-
-          <Pagination
-            pagination={pagination}
-            onPageChange={handlePageChange}
-            onPerPageChange={handlePerPageChange}
+        <Typography variant="body2" sx={{ mb: 1 }}>
+          Smazat záznamy starší než:
+        </Typography>
+        <Box sx={{ maxWidth: 200, mb: 1 }}>
+          <Select
+            value={cleanupDaysStr}
+            onChange={setCleanupDaysStr}
+            options={CLEANUP_DAYS_OPTIONS}
           />
-        </div>
-      </motion.div>
-    </div>
+        </Box>
+        <Typography variant="body2" sx={{ opacity: 0.6, fontSize: "0.75rem" }}>
+          Tato akce je nevratná.
+        </Typography>
+      </Modal>
+
+      <FilterBar>
+        <Box sx={{ flex: "1 1 220px" }}>
+          <TextField
+            value={filters.search}
+            onChange={(e) => handleFilterChange("search", e.target.value)}
+            placeholder="Popis, uživatel..."
+            fullWidth
+          />
+        </Box>
+        <Box sx={{ flex: "0 0 170px" }}>
+          <Select
+            value={filters.action}
+            onChange={(val) => handleFilterChange("action", val)}
+            options={[{ value: "", label: "Všechny akce" }, ...ACTION_OPTIONS]}
+          />
+        </Box>
+        <Box sx={{ flex: "0 0 200px" }}>
+          <Select
+            value={filters.entity_type}
+            onChange={(val) => handleFilterChange("entity_type", val)}
+            options={[
+              { value: "", label: "Všechny entity" },
+              ...ENTITY_OPTIONS,
+            ]}
+          />
+        </Box>
+        <Box sx={{ flex: "0 0 150px" }}>
+          <DateField
+            value={filters.date_from}
+            onChange={(val) => handleFilterChange("date_from", val)}
+            label="Od"
+          />
+        </Box>
+        <Box sx={{ flex: "0 0 150px" }}>
+          <DateField
+            value={filters.date_to}
+            onChange={(val) => handleFilterChange("date_to", val)}
+            label="Do"
+          />
+        </Box>
+      </FilterBar>
+
+      <Card sx={{ opacity: isPending ? 0.6 : 1, transition: "opacity .2s" }}>
+        <DataTable<AuditLogEntry>
+          columns={columns}
+          rows={logs}
+          rowKey={(log) => log.id}
+          empty={<EmptyState title="Žádné záznamy k zobrazení" />}
+        />
+        <Pagination
+          page={page}
+          pageCount={pagination?.total_pages ?? 1}
+          onChange={setPage}
+        />
+      </Card>
+    </Box>
   );
 }