Switch from Entry to TextView for multiline, paste support for attachments

src/transcript/transcript-view.vala

@@ -50,6 +50,9 @@ public class TranscriptView : Adw.Bin
     public TranscriptView() {
         container = new Adw.ToolbarView();
         set_child(container);
+        
+        // Set minimum width for the transcript view
+        set_size_request(330, -1);
 
         scrolled_window.set_child(transcript_drawing_area);
         scrolled_window.add_css_class("message-list-scroller");