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/input/input.tsx

@@ -1,5 +1,6 @@
 import { type ComponentType, type HTMLAttributes, type ReactNode, type Ref, createContext, useContext } from "react";
-import { HelpCircle, InfoCircle } from "@untitledui/icons";
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
+import { faCircleQuestion, faCircleExclamation } from "@fortawesome/pro-duotone-svg-icons";
 import type { InputProps as AriaInputProps, TextFieldProps as AriaTextFieldProps } from "react-aria-components";
 import { Group as AriaGroup, Input as AriaInput, TextField as AriaTextField } from "react-aria-components";
 import { HintText } from "@/components/base/input/hint-text";
@@ -140,14 +141,15 @@ export const InputBase = ({
                             tooltipClassName,
                         )}
                     >
-                        <HelpCircle className="size-4" />
+                        <FontAwesomeIcon icon={faCircleQuestion} className="size-4" />
                     </TooltipTrigger>
                 </Tooltip>
             )}
 
             {/* Invalid icon */}
             {isInvalid && (
-                <InfoCircle
+                <FontAwesomeIcon
+                    icon={faCircleExclamation}
                     className={cx(
                         "pointer-events-none absolute size-4 text-fg-error-secondary",
                         sizes[inputSize].iconTrailing,