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/base/dropdown/dropdown.tsx

@@ -1,5 +1,6 @@
 import type { FC, RefAttributes } from "react";
-import { DotsVertical } from "@untitledui/icons";
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
+import { faEllipsisVertical } from "@fortawesome/pro-duotone-svg-icons";
 import type {
     ButtonProps as AriaButtonProps,
     MenuItemProps as AriaMenuItemProps,
@@ -144,7 +145,7 @@ const DropdownDotsButton = (props: AriaButtonProps & RefAttributes<HTMLButtonEle
                 )
             }
         >
-            <DotsVertical className="size-5 transition-inherit-all" />
+            <FontAwesomeIcon icon={faEllipsisVertical} className="size-5 transition-inherit-all" />
         </AriaButton>
     );
 };