Enough already. I'm obviously not incentivized/shamed into writing unit tests for things in UNTESTED dir.s. It's just making a mess of the file tree

LibationWinForms/BookLiberation/DecryptForm.cs

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+using System;
+using System.Windows.Forms;
+using Dinah.Core.Drawing;
+using Dinah.Core.IO;
+using Dinah.Core.Windows.Forms;
+
+namespace LibationWinForms.BookLiberation
+{
+    public partial class DecryptForm : Form
+    {
+		public DecryptForm()
+        {
+            InitializeComponent();
+        }
+
+        System.IO.TextWriter origOut { get; } = Console.Out;
+        private void DecryptForm_Load(object sender, EventArgs e)
+        {
+            // redirect Console.WriteLine to console, textbox
+            var multiLogger = new MultiTextWriter(
+                origOut,
+                new RichTextBoxTextWriter(this.rtbLog),
+                new SerilogTextWriter());
+            Console.SetOut(multiLogger);
+        }
+
+        private void DecryptForm_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            // restore original
+            Console.SetOut(origOut);
+        }
+
+        // book info
+        string title;
+        string authorNames;
+        string narratorNames;
+
+        public void SetTitle(string title)
+        {
+            this.UIThread(() => this.Text = " Decrypting " + title);
+            this.title = title;
+            updateBookInfo();
+        }
+        public void SetAuthorNames(string authorNames)
+        {
+            this.authorNames = authorNames;
+            updateBookInfo();
+        }
+        public void SetNarratorNames(string narratorNames)
+        {
+            this.narratorNames = narratorNames;
+            updateBookInfo();
+        }
+
+        // thread-safe UI updates
+        private void updateBookInfo()
+            => bookInfoLbl.UIThread(() => bookInfoLbl.Text = $"{title}\r\nBy {authorNames}\r\nNarrated by {narratorNames}");
+
+        public void SetCoverImage(byte[] coverBytes)
+            => pictureBox1.UIThread(() => pictureBox1.Image = ImageReader.ToImage(coverBytes));
+
+		public void UpdateProgress(int percentage) => progressBar1.UIThread(() => progressBar1.Value = percentage);
+    }
+}