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/admin/document-templates/template-version-history.tsx

@@ -81,7 +81,7 @@ export function TemplateVersionHistory({
   if (versions.length === 0) {
     return (
       <div className="flex flex-col items-center gap-2 rounded-md border border-dashed p-6 text-center">
-        <Clock className="h-6 w-6 text-muted-foreground" />
+        <Clock className="h-6 w-6 text-muted-foreground" aria-hidden />
         <p className="text-sm text-muted-foreground">
           No previous versions found. Versions are saved whenever you update the template content.
         </p>
@@ -129,7 +129,7 @@ export function TemplateVersionHistory({
               onClick={() => handleRollback(v.version)}
               disabled={rollingBack === v.version}
             >
-              <RotateCcw className="mr-1.5 h-3.5 w-3.5" />
+              <RotateCcw className="mr-1.5 h-3.5 w-3.5" aria-hidden />
               {rollingBack === v.version ? 'Restoring…' : 'Restore'}
             </Button>
           </div>