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/select/select-native.tsx

@@ -1,5 +1,6 @@
 import { type SelectHTMLAttributes, useId } from "react";
-import { ChevronDown } from "@untitledui/icons";
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
+import { faChevronDown } from "@fortawesome/pro-duotone-svg-icons";
 import { HintText } from "@/components/base/input/hint-text";
 import { Label } from "@/components/base/input/label";
 import { cx } from "@/utils/cx";
@@ -51,9 +52,10 @@ export const NativeSelect = ({ label, hint, options, className, selectClassName,
                         </option>
                     ))}
                 </select>
-                <ChevronDown
+                <FontAwesomeIcon
+                    icon={faChevronDown}
                     aria-hidden="true"
-                    className="pointer-events-none absolute right-3.5 size-5 text-fg-quaternary in-data-input-wrapper:right-0 in-data-input-wrapper:size-4 in-data-input-wrapper:stroke-[2.625px] in-data-input-wrapper:in-data-trailing:in-data-[input-size=sm]:right-3"
+                    className="pointer-events-none absolute right-3.5 size-5 text-fg-quaternary in-data-input-wrapper:right-0 in-data-input-wrapper:size-4 in-data-input-wrapper:in-data-trailing:in-data-[input-size=sm]:right-3"
                 />
             </div>