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.tsx

@@ -1,6 +1,7 @@
 import type { FC, ReactNode, Ref, RefAttributes } from "react";
 import { createContext, isValidElement } from "react";
-import { ChevronDown } from "@untitledui/icons";
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
+import { faChevronDown } from "@fortawesome/pro-duotone-svg-icons";
 import type { SelectProps as AriaSelectProps } from "react-aria-components";
 import { Button as AriaButton, ListBox as AriaListBox, Select as AriaSelect, SelectValue as AriaSelectValue } from "react-aria-components";
 import { Avatar } from "@/components/base/avatar/avatar";
@@ -92,9 +93,10 @@ const SelectValue = ({ isOpen, isFocused, isDisabled, size, placeholder, placeho
                                 <p className={cx("text-md text-placeholder", isDisabled && "text-disabled")}>{placeholder}</p>
                             )}
 
-                            <ChevronDown
+                            <FontAwesomeIcon
+                                icon={faChevronDown}
                                 aria-hidden="true"
-                                className={cx("ml-auto shrink-0 text-fg-quaternary", size === "sm" ? "size-4 stroke-[2.5px]" : "size-5")}
+                                className={cx("ml-auto shrink-0 text-fg-quaternary", size === "sm" ? "size-4" : "size-5")}
                             />
                         </>
                     );