feat: add audit log viewing for vendor and tenant personas

Vendor sees all audit events with tenant filter at /vendor/audit.
Tenant admin sees only their own events at /tenant/audit.
Both support pagination, action/result filters, and text search.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/pages/tenant/TenantAuditPage.tsx

@@ -0,0 +1,23 @@
+import { useState } from 'react';
+import { useTenantAuditLog } from '../../api/tenant-hooks';
+import { AuditLogTable } from '../../components/AuditLogTable';
+import type { AuditLogFilters } from '../../types/api';
+
+export function TenantAuditPage() {
+  const [filters, setFilters] = useState<AuditLogFilters>({ page: 0, size: 25 });
+  const { data, isLoading } = useTenantAuditLog(filters);
+
+  return (
+    <div style={{ padding: 24, display: 'flex', flexDirection: 'column', gap: 20 }}>
+      <h1 style={{ margin: 0, fontSize: '1.25rem', fontWeight: 600 }}>Audit Log</h1>
+      <AuditLogTable
+        data={data}
+        isLoading={isLoading}
+        filters={filters}
+        onFiltersChange={setFilters}
+        showTenantColumn={false}
+        showTenantFilter={false}
+      />
+    </div>
+  );
+}

ui/src/pages/vendor/VendorAuditPage.tsx

@@ -0,0 +1,25 @@
+import { useState } from 'react';
+import { useVendorAuditLog, useVendorTenants } from '../../api/vendor-hooks';
+import { AuditLogTable } from '../../components/AuditLogTable';
+import type { AuditLogFilters } from '../../types/api';
+
+export function VendorAuditPage() {
+  const [filters, setFilters] = useState<AuditLogFilters>({ page: 0, size: 25 });
+  const { data, isLoading } = useVendorAuditLog(filters);
+  const { data: tenants } = useVendorTenants();
+
+  return (
+    <div style={{ padding: 24, display: 'flex', flexDirection: 'column', gap: 20 }}>
+      <h1 style={{ margin: 0, fontSize: '1.25rem', fontWeight: 600 }}>Audit Log</h1>
+      <AuditLogTable
+        data={data}
+        isLoading={isLoading}
+        filters={filters}
+        onFiltersChange={setFilters}
+        showTenantColumn
+        showTenantFilter
+        tenants={tenants}
+      />
+    </div>
+  );
+}