fix(comments): defer input clearing until submit succeeds

clearContent() and setIsEmpty() were called before await onSubmit(),
causing permanent content and draft loss on network failure. Move both
to the success path, consistent with attachment and draft cleanup.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>

packages/views/issues/components/comment-input.tsx

@@ -77,10 +77,10 @@ function CommentInput({ issueId, onSubmit }: CommentInputProps) {
       .filter((a) => content.includes(a.url))
       .map((a) => a.id);
     setSubmitting(true);
-    editorRef.current?.clearContent();
-    setIsEmpty(true);
     try {
       await onSubmit(content, activeIds.length > 0 ? activeIds : undefined);
+      editorRef.current?.clearContent();
+      setIsEmpty(true);
       setPendingAttachments([]);
       clearDraft(draftKey);
     } finally {

packages/views/issues/components/reply-input.tsx

@@ -96,10 +96,10 @@ function ReplyInput({
       .filter((a) => content.includes(a.url))
       .map((a) => a.id);
     setSubmitting(true);
-    editorRef.current?.clearContent();
-    setIsEmpty(true);
     try {
       await onSubmit(content, activeIds.length > 0 ? activeIds : undefined);
+      editorRef.current?.clearContent();
+      setIsEmpty(true);
       setPendingAttachments([]);
       if (draftKey) clearDraft(draftKey);
     } finally {