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/hard-delete-dialog.tsx

@@ -94,7 +94,7 @@ function HardDeleteDialogBody({ onOpenChange, clientId, clientName, onDeleted }:
     <>
       <DialogHeader>
         <DialogTitle className="flex items-center gap-2 text-destructive">
-          <AlertTriangle className="h-5 w-5" />
+          <AlertTriangle className="h-5 w-5" aria-hidden />
           Permanently delete {clientName}
         </DialogTitle>
         <DialogDescription>
@@ -126,7 +126,7 @@ function HardDeleteDialogBody({ onOpenChange, clientId, clientName, onDeleted }:
       ) : (
         <div className="space-y-3">
           <div className="flex items-start gap-2 rounded-md border border-blue-300 bg-blue-50 p-3 text-xs text-blue-900">
-            <Mail className="h-4 w-4 shrink-0 mt-0.5" />
+            <Mail className="h-4 w-4 shrink-0 mt-0.5" aria-hidden />
             <div className="flex-1">
               <div>
                 Code sent to <span className="font-mono">{maskedEmail}</span>. It expires in 10
@@ -185,7 +185,7 @@ function HardDeleteDialogBody({ onOpenChange, clientId, clientName, onDeleted }:
           >
             {requestCode.isPending ? (
               <>
-                <Loader2 className="h-4 w-4 animate-spin mr-1.5" /> Sending…
+                <Loader2 className="h-4 w-4 animate-spin mr-1.5" aria-hidden /> Sending…
               </>
             ) : (
               'Send confirmation code'
@@ -199,7 +199,7 @@ function HardDeleteDialogBody({ onOpenChange, clientId, clientName, onDeleted }:
           >
             {hardDelete.isPending ? (
               <>
-                <Loader2 className="h-4 w-4 animate-spin mr-1.5" /> Deleting…
+                <Loader2 className="h-4 w-4 animate-spin mr-1.5" aria-hidden /> Deleting…
               </>
             ) : (
               'Permanently delete'