refactor: enhance FileOrUrlField with reusable UI components and existing file support

app/components/FileOrUrlField.tsx

@@ -1,4 +1,6 @@
 import { Upload, Link, X } from 'lucide-react';
+import { Input } from '~/components/ui/input';
+import { Label } from '~/components/ui/label';
 
 export type InputMode = 'url' | 'file';
 
@@ -14,21 +16,24 @@ export interface FileOrUrlFieldProps {
     url: string;
     onUrlChange: (u: string) => void;
     urlPlaceholder: string;
+    existingFileName?: string;
+    onClearExistingFile?: () => void;
 }
 
 export function FileOrUrlField({
     label, required, mode, onModeChange,
     accept, file, onFileChange, inputRef,
     url, onUrlChange, urlPlaceholder,
+    existingFileName, onClearExistingFile,
 }: FileOrUrlFieldProps) {
     return (
         <div className='space-y-1.5'>
             {/* Label + toggle */}
             <div className='flex items-center justify-between ml-1'>
-                <label className='text-xs font-bold text-neutral-400 uppercase tracking-wider'>
+                <Label>
                     {label}{required && <span className='text-orange-500 ml-0.5'>*</span>}
-                </label>
+                </Label>
-                <div className='flex items-center gap-1 rounded-xl bg-[#181818] border border-neutral-800 p-1 text-xs'>
+                <div className='flex items-center gap-1 rounded-xl bg-[#181818] border border-neutral-850 p-1 text-xs'>
                     <button
                         type='button'
                         onClick={() => onModeChange('file')}
@@ -60,7 +65,7 @@ export function FileOrUrlField({
                 <div
                     onClick={() => inputRef.current?.click()}
                     className={`flex cursor-pointer items-center gap-3 rounded-xl border-2 border-dashed px-4 py-4 transition-all duration-200 ${
-                        file
+                        file || existingFileName
                             ? 'border-orange-500/50 bg-[#161616]'
                             : 'border-neutral-800 hover:border-neutral-700 bg-[#161616]/40 hover:bg-[#161616]/70'
                     }`}
@@ -97,6 +102,30 @@ export function FileOrUrlField({
                                 <X size={15} />
                             </button>
                         </>
+                    ) : existingFileName ? (
+                        <>
+                            <div className='flex flex-1 items-center gap-3.5 min-w-0'>
+                                <div className='w-8 h-8 rounded-lg bg-orange-500/10 border border-orange-500/20 flex items-center justify-center shrink-0'>
+                                    <Upload size={14} className='text-orange-500' />
+                                </div>
+                                <div className="flex flex-col min-w-0">
+                                    <span className='text-sm text-white font-semibold truncate'>{existingFileName}</span>
+                                    <span className='text-[10px] text-neutral-500 font-medium mt-0.5'>
+                                        Existing File (Keep)
+                                    </span>
+                                </div>
+                            </div>
+                            <button
+                                type='button'
+                                onClick={(e) => {
+                                    e.stopPropagation();
+                                    if (onClearExistingFile) onClearExistingFile();
+                                }}
+                                className='shrink-0 text-neutral-500 hover:text-white p-1 hover:bg-neutral-800 rounded-lg transition-colors cursor-pointer'
+                            >
+                                <X size={15} />
+                            </button>
+                        </>
                     ) : (
                         <div className='flex flex-1 items-center gap-3 text-neutral-500 py-1'>
                             <Upload size={16} className="text-neutral-600" />
@@ -107,9 +136,8 @@ export function FileOrUrlField({
                     )}
                 </div>
             ) : (
-                <input
+                <Input
                     type='url'
-                    className='w-full bg-[#181818] border border-neutral-800 rounded-xl px-4 py-3 text-sm text-white placeholder-neutral-700 focus:border-orange-500 focus:outline-none transition-colors duration-200'
                     placeholder={urlPlaceholder}
                     value={url}
                     onChange={(e) => onUrlChange(e.target.value)}