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/contacts-editor.tsx

@@ -141,7 +141,7 @@ export function ContactsEditor({ clientId, contacts }: { clientId: string; conta
           onClick={() => setAdding(true)}
           className="w-full justify-center"
         >
-          <Plus className="h-3.5 w-3.5 mr-1.5" />
+          <Plus className="h-3.5 w-3.5 mr-1.5" aria-hidden />
           Add contact
         </Button>
       )}
@@ -201,7 +201,7 @@ function ContactRow({
       {/* Top / left: channel + value */}
       <div className="flex min-w-0 flex-1 items-center gap-2">
         <ChannelPicker value={contact.channel} onChange={changeChannel}>
-          <Icon className="h-3.5 w-3.5 text-muted-foreground" />
+          <Icon className="h-3.5 w-3.5 text-muted-foreground" aria-hidden />
         </ChannelPicker>
         <div className="min-w-0 flex-1">
           {contact.channel === 'phone' || contact.channel === 'whatsapp' ? (
@@ -282,7 +282,7 @@ function ContactRow({
             title="Remove"
             className="rounded p-1 text-muted-foreground/50 transition-all hover:bg-background/60 hover:text-destructive sm:opacity-0 sm:group-hover:opacity-100"
           >
-            <Trash2 className="h-3.5 w-3.5" />
+            <Trash2 className="h-3.5 w-3.5" aria-hidden />
           </button>
         </div>
       ) : null}
@@ -439,7 +439,7 @@ function NewContactForm({
 
       <div className="ml-auto flex gap-2">
         <Button type="button" size="sm" onClick={submit} disabled={submitDisabled}>
-          {saving ? <Loader2 className="h-3.5 w-3.5 animate-spin" /> : 'Save'}
+          {saving ? <Loader2 className="h-3.5 w-3.5 animate-spin" aria-hidden /> : 'Save'}
         </Button>
         <Button type="button" size="sm" variant="ghost" onClick={onCancel} disabled={saving}>
           Cancel