feat(comments): add drag-and-drop support for image attachments and enhance image validation

components/video-page-content.tsx

@@ -414,6 +414,7 @@ export function VideoPageContent({ mode, videoId, projectId: propProjectId }: Vi
     handleAddComment,
     handleImageSelect,
     handlePaste,
+    handleDrop,
     startRecording,
     stopRecording,
     cancelRecording,
@@ -814,6 +815,7 @@ export function VideoPageContent({ mode, videoId, projectId: propProjectId }: Vi
           replyImageInputRef={replyImageInputRef}
           handleImageSelect={handleImageSelect}
           handlePaste={handlePaste}
+          handleDrop={handleDrop}
           submitReplyWithMedia={commentsActions.onSubmitReplyWithMedia}
           isSubmittingReply={isSubmittingReply}
           isUploadingReplyAudio={isUploadingReplyAudio}

components/video-page/assets-pane.tsx

@@ -256,7 +256,7 @@ export const AssetsPane = memo(function AssetsPane({
   const handleImageUpload = useCallback(async (file: File) => {
     if (!file) return;
 
-    const imageError = validateImageFile(file);
+    const imageError = await validateImageFile(file);
     if (imageError) {
       toast.error(imageError);
       return;
@@ -297,7 +297,7 @@ export const AssetsPane = memo(function AssetsPane({
   const handleImageFileChange = async (event: React.ChangeEvent<HTMLInputElement>) => {
     const file = event.target.files?.[0];
     if (!file) return;
-    const imageError = validateImageFile(file);
+    const imageError = await validateImageFile(file);
     if (imageError) {
       toast.error(imageError);
       return;
@@ -306,16 +306,16 @@ export const AssetsPane = memo(function AssetsPane({
     toast.success('Image attached. Click Upload Image to send.');
   };
 
-  const handleImagePaste = (event: React.ClipboardEvent<HTMLDivElement>) => {
+  const handleImagePaste = async (event: React.ClipboardEvent<HTMLDivElement>) => {
     if (uploadTab !== 'image' || !canUploadAssets || isCreatingAsset) return;
     const pastedImage = extractPastedImageFile(event.clipboardData);
     if (!pastedImage) return;
-    const imageError = validateImageFile(pastedImage);
+    event.preventDefault();
+    const imageError = await validateImageFile(pastedImage);
     if (imageError) {
       toast.error(imageError);
       return;
     }
-    event.preventDefault();
     setPendingImageFile(pastedImage);
     toast.success('Image attached from clipboard. Click Upload Image to send.');
   };
@@ -582,7 +582,7 @@ export const AssetsPane = memo(function AssetsPane({
     if (!file) return;
 
     if (file.type.startsWith('image/')) {
-      const imageError = validateImageFile(file);
+      const imageError = await validateImageFile(file);
       if (imageError) { toast.error(imageError); return; }
       // Stage the file so the user can optionally set a name before uploading
       setUploadTab('image');

components/video-page/comments-pane.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import { memo, type ReactNode, type RefObject } from 'react';
+import { memo, useState, type ReactNode, type RefObject } from 'react';
 import { ArrowUpRight, CheckCircle2, ChevronDown, Circle, Clock, Download, FileText, FolderOpen, Image as ImageIcon, Loader2, MessageSquare, Mic, MoreVertical, Pause, Pencil, Play, Reply, Tag, Trash2, X } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
@@ -78,6 +78,7 @@ interface CommentsPaneProps {
   replyImageInputRef: RefObject<HTMLInputElement | null>;
   handleImageSelect: (e: React.ChangeEvent<HTMLInputElement>, isReply?: boolean) => void;
   handlePaste: (e: React.ClipboardEvent<HTMLTextAreaElement>, isReply?: boolean) => void;
+  handleDrop: (e: React.DragEvent<HTMLDivElement>, isReply?: boolean) => void;
   submitReplyWithMedia: (parentId: string) => void;
   isSubmittingReply: boolean;
   isUploadingReplyAudio: boolean;
@@ -147,6 +148,7 @@ export const CommentsPane = memo(function CommentsPane({
   replyImageInputRef,
   handleImageSelect,
   handlePaste,
+  handleDrop,
   submitReplyWithMedia,
   isSubmittingReply,
   isUploadingReplyAudio,
@@ -158,6 +160,8 @@ export const CommentsPane = memo(function CommentsPane({
   setActivePane,
   assetsPane,
 }: CommentsPaneProps) {
+  const [isPaneDraggingOver, setIsPaneDraggingOver] = useState(false);
+
   return (
     <>
       <div
@@ -168,13 +172,24 @@ export const CommentsPane = memo(function CommentsPane({
         onClick={() => setIsMobileCommentsOpen(false)}
       />
 
-      <div className={cn(
+      <div
-        'bg-card flex flex-col overflow-hidden z-50',
+        className={cn(
+          'bg-card flex flex-col overflow-hidden z-50 relative',
           'fixed inset-y-0 right-0 w-[85%] sm:w-[400px] shadow-2xl transition-transform duration-300 transform',
           isMobileCommentsOpen ? 'translate-x-0' : 'translate-x-full',
           'lg:static lg:w-80 lg:shrink-0 lg:border-l lg:transition-none lg:translate-x-0 lg:shadow-none lg:z-auto',
           isFullscreenMode && !showComments ? 'hidden' : ''
-      )}>
+        )}
+        onDragOver={(e) => { if (activePane !== 'comments') return; e.preventDefault(); setIsPaneDraggingOver(true); }}
+        onDragEnter={(e) => { if (activePane !== 'comments') return; e.preventDefault(); setIsPaneDraggingOver(true); }}
+        onDragLeave={(e) => { if (!e.currentTarget.contains(e.relatedTarget as Node)) setIsPaneDraggingOver(false); }}
+        onDrop={(e) => { setIsPaneDraggingOver(false); if (activePane !== 'comments') return; handleDrop(e, replyingTo !== null); }}
+      >
+        {isPaneDraggingOver && (
+          <div className="absolute inset-0 z-20 flex items-center justify-center border-2 border-dashed border-primary bg-primary/10 pointer-events-none">
+            <p className="text-sm font-medium text-primary">Drop image to attach</p>
+          </div>
+        )}
         <div className="shrink-0 p-4 border-b lg:cursor-default space-y-2">
           <div className="flex items-center justify-between gap-2">
             <div className="flex items-center gap-1 min-w-0 overflow-x-auto">

components/video-page/hooks/use-comment-actions.ts

@@ -7,6 +7,7 @@ import {
   useState,
   type ChangeEvent,
   type ClipboardEvent,
+  type DragEvent,
   type Dispatch,
   type RefObject,
   type SetStateAction,
@@ -284,11 +285,11 @@ export function useCommentActions({
     fetchAssets,
   ]);
 
-  const handleImageSelect = useCallback((e: ChangeEvent<HTMLInputElement>, isReply: boolean = false) => {
+  const handleImageSelect = useCallback(async (e: ChangeEvent<HTMLInputElement>, isReply: boolean = false) => {
     const file = e.target.files?.[0];
     if (!file) return;
 
-    const imageError = validateImageFile(file);
+    const imageError = await validateImageFile(file);
     if (imageError) {
       toast.error(imageError);
       return;
@@ -301,11 +302,12 @@ export function useCommentActions({
     }
   }, []);
 
-  const handlePaste = useCallback((e: ClipboardEvent<HTMLTextAreaElement>, isReply: boolean = false) => {
+  const handlePaste = useCallback(async (e: ClipboardEvent<HTMLTextAreaElement>, isReply: boolean = false) => {
     const file = extractPastedImageFile(e.clipboardData);
     if (!file) return;
+    e.preventDefault();
 
-    const imageError = validateImageFile(file);
+    const imageError = await validateImageFile(file);
     if (imageError) {
       toast.error(imageError);
       return;
@@ -316,7 +318,24 @@ export function useCommentActions({
     } else {
       setImageBlob(file);
     }
+  }, []);
+
+  const handleDrop = useCallback(async (e: DragEvent<HTMLDivElement>, isReply: boolean = false) => {
     e.preventDefault();
+    const file = extractPastedImageFile(e.dataTransfer);
+    if (!file) return;
+
+    const imageError = await validateImageFile(file);
+    if (imageError) {
+      toast.error(imageError);
+      return;
+    }
+
+    if (isReply) {
+      setReplyImageBlob(file);
+    } else {
+      setImageBlob(file);
+    }
   }, []);
 
   const startRecording = useCallback(async () => {
@@ -961,6 +980,7 @@ export function useCommentActions({
     handleAddComment,
     handleImageSelect,
     handlePaste,
+    handleDrop,
     startRecording,
     stopRecording,
     cancelRecording,

components/video-page/image-upload-utils.ts

@@ -1,16 +1,20 @@
 'use client';
 
+import { detectImageMime } from '@/lib/image-upload-validation';
+
 export const MAX_IMAGE_UPLOAD_BYTES = 10 * 1024 * 1024;
 
-export function validateImageFile(file: File): string | null {
+export async function validateImageFile(file: File): Promise<string | null> {
-  if (!file.type.startsWith('image/')) {
-    return 'Please select an image file';
-  }
-
   if (file.size > MAX_IMAGE_UPLOAD_BYTES) {
     return 'Image must be less than 10MB';
   }
 
+  const header = await file.slice(0, 12).arrayBuffer();
+  const detected = detectImageMime(new Uint8Array(header));
+  if (!detected) {
+    return 'Unsupported image format. Allowed: JPEG, PNG, GIF, WEBP';
+  }
+
   return null;
 }