refactor: migrate all icons from Untitled UI to FontAwesome Pro Duotone

Replace all @untitledui/icons imports across 55 files with equivalent
@fortawesome/pro-duotone-svg-icons icons, using FontAwesomeIcon wrappers
(FC<{ className?: string }>) for prop-based usage and inline replacements
for direct JSX usage. Drops unsupported Untitled UI-specific props
(strokeWidth, numeric size). TypeScript compiles clean with no errors.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/leads/lead-table.tsx

@@ -1,7 +1,11 @@
+import type { FC } from 'react';
 import { useMemo, useState } from 'react';
 import { TableBody as AriaTableBody } from 'react-aria-components';
 import type { SortDescriptor, Selection } from 'react-aria-components';
-import { DotsVertical } from '@untitledui/icons';
+import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
+import { faEllipsisVertical } from '@fortawesome/pro-duotone-svg-icons';
+
+const DotsVertical: FC<{ className?: string }> = ({ className }) => <FontAwesomeIcon icon={faEllipsisVertical} className={className} />;
 import { Badge } from '@/components/base/badges/badges';
 import { Button } from '@/components/base/buttons/button';
 import { Table } from '@/components/application/table/table';