AI: address issue #401

frontend/src/components/PostEditForm.tsx

@@ -3,6 +3,7 @@ import { useEffect, useMemo, useState } from 'react'
 import { useLocale } from '@/lib/useLocale'
 import PostOriginalCreatedTimeField from '@/components/PostOriginalCreatedTimeField'
 import FieldError from '@/components/common/FieldError'
+import FieldWarning from '@/components/common/FieldWarning'
 import PostDurationField from '@/components/posts/PostDurationField'
 import PostTagsField from '@/components/posts/PostTagsField'
 import PostTextField from '@/components/posts/PostTextField'
@@ -172,6 +173,9 @@ const PostEditForm: FC<Props> = ({ post, onSave }) => {
   return (
       <form onSubmit={handleSubmit} className="max-w-xl pt-2 space-y-4">
 	<FieldError messages={baseErrors}/>
+	{!(post.thumbnail?.trim () || post.thumbnailBase?.trim ()) && (
+	    <FieldWarning
+		messages={[label ('shared:labels.thumbnailMissing')]}/>)}
 
 	<PostTextField
 	    label={label ('shared:labels.title')}

frontend/src/components/PostEmbed.tsx

@@ -196,27 +196,6 @@ const PostEmbed: FC<Props> = (
       return <TwitterEmbed userId={userId} statusId={statusId}/>
     }
 
-  case 'tiktok.com':
-    {
-      const videoId = url.pathname.match (/^\/@[^/]+\/video\/(\d+)\/?$/)?.[1]
-      if (!(videoId))
-	break
-
-      if (embedAutoLoadMode === 'off')
-	return externalLink
-      if (shouldLoadEmbed === false)
-	return manualLoadControl
-
-      return (
-	  <iframe
-	      src={`https://www.tiktok.com/player/v1/${ encodeURIComponent (videoId) }`}
-	      title={post.title || post.url}
-	      width={325}
-	      height={578}
-	      className="max-w-full"
-	      allowFullScreen/>)
-    }
-
   case 'youtube.com':
     {
       const videoId = url.searchParams.get ('v')