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/email/email-draft-button.tsx

@@ -101,12 +101,12 @@ export function EmailDraftButton({
       <Button variant="outline" size="sm" onClick={handleGenerateDraft} disabled={isLoading}>
         {isLoading ? (
           <>
-            <Loader2 className="mr-1.5 h-3.5 w-3.5 animate-spin" />
+            <Loader2 className="mr-1.5 h-3.5 w-3.5 animate-spin" aria-hidden />
             Generating...
           </>
         ) : (
           <>
-            <Mail className="mr-1.5 h-3.5 w-3.5" />
+            <Mail className="mr-1.5 h-3.5 w-3.5" aria-hidden />
             Draft Email
           </>
         )}
@@ -156,12 +156,12 @@ export function EmailDraftButton({
                 <Button variant="outline" size="sm" onClick={handleCopy}>
                   {copied ? (
                     <>
-                      <Check className="mr-1.5 h-3.5 w-3.5 text-green-600" />
+                      <Check className="mr-1.5 h-3.5 w-3.5 text-green-600" aria-hidden />
                       Copied
                     </>
                   ) : (
                     <>
-                      <Copy className="mr-1.5 h-3.5 w-3.5" />
+                      <Copy className="mr-1.5 h-3.5 w-3.5" aria-hidden />
                       Copy to clipboard
                     </>
                   )}
@@ -174,7 +174,7 @@ export function EmailDraftButton({
                 >
                   {isLoading ? (
                     <>
-                      <Loader2 className="mr-1.5 h-3.5 w-3.5 animate-spin" />
+                      <Loader2 className="mr-1.5 h-3.5 w-3.5 animate-spin" aria-hidden />
                       Regenerating...
                     </>
                   ) : (