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/clients/client-detail-header.tsx

@@ -167,7 +167,7 @@ export function ClientDetailHeader({ client }: ClientDetailHeaderProps) {
                   title="Permanently delete client"
                   className="shrink-0 rounded-md p-1.5 text-muted-foreground/70 transition-colors hover:bg-destructive/10 hover:text-destructive"
                 >
-                  <Trash2 className="size-4" />
+                  <Trash2 className="size-4" aria-hidden />
                 </button>
               </PermissionGate>
             )}
@@ -182,7 +182,11 @@ export function ClientDetailHeader({ client }: ClientDetailHeaderProps) {
                 isArchived ? 'hover:text-emerald-600' : 'hover:text-destructive',
               )}
             >
-              {isArchived ? <RotateCcw className="size-4" /> : <Archive className="size-4" />}
+              {isArchived ? (
+                <RotateCcw className="size-4" aria-hidden />
+              ) : (
+                <Archive className="size-4" aria-hidden />
+              )}
             </button>
           </div>
         </div>