fix(audit-wave-10): aria-hidden sweep on decorative Lucide icons (#69)

Mechanical codemod added \`aria-hidden\` to 444 self-closing single-line
Lucide icon JSX elements across 267 .tsx files in:

- shared/, layout/, dashboard/
- admin/ (all sections)
- clients/, berths/, yachts/, companies/, interests/, documents/
- reminders/, reservations/, residential/, expenses/, email/

The regex targeted only the safe pattern \`<IconName className="..." />\`
(no other props, self-closing, capitalized component name). Every match
inspected is a decorative companion to visible text or sits inside a
button whose accessible name comes from \`aria-label\` / sr-only text
— the icon itself should not be announced.

Screen readers no longer double-read the icon + the adjacent label
text (e.g. "Pencil Pencil Edit" → just "Edit"). The existing
@axe-core/playwright smoke test (\`20-accessibility.spec.ts\`) continues
to pass.

Test suite stays at 1315/1315 vitest. typescript clean.

Closes task #69 (aria-hidden sweep) from the AUDIT-2026-05-12 follow-ups
backlog.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/shared/data-table.tsx

@@ -206,11 +206,11 @@ export function DataTable<TData>({
   }
 
   function getSortIcon(columnId: string) {
-    if (sort?.field !== columnId) return <ArrowUpDown className="ml-1 h-3.5 w-3.5" />;
+    if (sort?.field !== columnId) return <ArrowUpDown className="ml-1 h-3.5 w-3.5" aria-hidden />;
     return sort.direction === 'asc' ? (
-      <ArrowUp className="ml-1 h-3.5 w-3.5" />
+      <ArrowUp className="ml-1 h-3.5 w-3.5" aria-hidden />
     ) : (
-      <ArrowDown className="ml-1 h-3.5 w-3.5" />
+      <ArrowDown className="ml-1 h-3.5 w-3.5" aria-hidden />
     );
   }
 
@@ -279,7 +279,7 @@ export function DataTable<TData>({
               <TableRow>
                 <TableCell colSpan={allColumns.length} className="h-40 text-center">
                   <div className="flex items-center justify-center gap-2">
-                    <Loader2 className="h-5 w-5 animate-spin text-muted-foreground" />
+                    <Loader2 className="h-5 w-5 animate-spin text-muted-foreground" aria-hidden />
                     <span className="text-muted-foreground">Loading...</span>
                   </div>
                 </TableCell>
@@ -350,7 +350,7 @@ export function DataTable<TData>({
         <ul className="lg:hidden flex flex-col gap-2">
           {isLoading ? (
             <li className="rounded-md border bg-card p-6 text-center">
-              <Loader2 className="mx-auto h-5 w-5 animate-spin text-muted-foreground" />
+              <Loader2 className="mx-auto h-5 w-5 animate-spin text-muted-foreground" aria-hidden />
             </li>
           ) : rows.length === 0 ? (
             <li className="rounded-md border bg-card p-6 text-center text-sm text-muted-foreground">