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/system-monitoring-dashboard.tsx

@@ -60,9 +60,9 @@ export function SystemMonitoringDashboard() {
           <>
             <div className="flex items-center gap-2 mb-3">
               {health.overall === 'healthy' ? (
-                <CheckCircle2 className="h-4 w-4 text-green-500" />
+                <CheckCircle2 className="h-4 w-4 text-green-500" aria-hidden />
               ) : (
-                <AlertTriangle className="h-4 w-4 text-yellow-500" />
+                <AlertTriangle className="h-4 w-4 text-yellow-500" aria-hidden />
               )}
               <span className="text-sm text-muted-foreground">
                 All services checked at {new Date(health.checkedAt).toLocaleTimeString()}
@@ -88,7 +88,7 @@ export function SystemMonitoringDashboard() {
         <Card>
           <CardHeader className="pb-2">
             <CardTitle className="text-xs text-muted-foreground font-medium uppercase tracking-wide flex items-center gap-1.5">
-              <Wifi className="h-3.5 w-3.5" />
+              <Wifi className="h-3.5 w-3.5" aria-hidden />
               Active Connections
             </CardTitle>
           </CardHeader>
@@ -100,7 +100,7 @@ export function SystemMonitoringDashboard() {
         <Card>
           <CardHeader className="pb-2">
             <CardTitle className="text-xs text-muted-foreground font-medium uppercase tracking-wide flex items-center gap-1.5">
-              <AlertTriangle className="h-3.5 w-3.5" />
+              <AlertTriangle className="h-3.5 w-3.5" aria-hidden />
               Total Failed Jobs
             </CardTitle>
           </CardHeader>
@@ -114,7 +114,7 @@ export function SystemMonitoringDashboard() {
         <Card>
           <CardHeader className="pb-2">
             <CardTitle className="text-xs text-muted-foreground font-medium uppercase tracking-wide flex items-center gap-1.5">
-              <Activity className="h-3.5 w-3.5" />
+              <Activity className="h-3.5 w-3.5" aria-hidden />
               Active Jobs
             </CardTitle>
           </CardHeader>