Add Settings button to the bulk sender window

The ribbon button only opened SettingsForm while the archive folder
was unconfigured - once saved once, there was no way back into
settings (domain, templates, sender account, signature path) short of
breaking the saved folder path. Added a "Настройки..." button to
PreviewForm that reopens SettingsForm and rescans with the reloaded
settings afterward.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

outlook-bulk-sender/BulkArchiveMailer.AddIn/UI/PreviewForm.Designer.cs

@@ -30,6 +30,7 @@ namespace BulkArchiveMailer.AddIn.UI
         private System.Windows.Forms.Button btnCheckAllReady;
         private System.Windows.Forms.Button btnUncheckAll;
         private System.Windows.Forms.Button btnRescan;
+        private System.Windows.Forms.Button btnSettings;
 
         private System.Windows.Forms.ProgressBar progressSend;
         private System.Windows.Forms.Label lblProgressStatus;
@@ -56,6 +57,7 @@ namespace BulkArchiveMailer.AddIn.UI
             this.btnCheckAllReady = new System.Windows.Forms.Button();
             this.btnUncheckAll = new System.Windows.Forms.Button();
             this.btnRescan = new System.Windows.Forms.Button();
+            this.btnSettings = new System.Windows.Forms.Button();
 
             this.progressSend = new System.Windows.Forms.ProgressBar();
             this.lblProgressStatus = new System.Windows.Forms.Label();
@@ -70,7 +72,7 @@ namespace BulkArchiveMailer.AddIn.UI
             // lblPasswordReminder
             //
             this.lblPasswordReminder.Location = new System.Drawing.Point(12, 10);
-            this.lblPasswordReminder.Size = new System.Drawing.Size(900, 20);
+            this.lblPasswordReminder.Size = new System.Drawing.Size(1018, 20);
             this.lblPasswordReminder.Text = "Напоминание: пароль от архивов сообщается получателям отдельно (вручную, не через это письмо и не через этот инструмент).";
             this.lblPasswordReminder.ForeColor = System.Drawing.Color.DarkRed;
             this.lblPasswordReminder.Font = new System.Drawing.Font(this.lblPasswordReminder.Font, System.Drawing.FontStyle.Bold);
@@ -80,7 +82,7 @@ namespace BulkArchiveMailer.AddIn.UI
             // lblSignatureWarning
             //
             this.lblSignatureWarning.Location = new System.Drawing.Point(12, 32);
-            this.lblSignatureWarning.Size = new System.Drawing.Size(900, 20);
+            this.lblSignatureWarning.Size = new System.Drawing.Size(1018, 20);
             this.lblSignatureWarning.Text = "Подпись не найдена — письма будут отправлены без подписи. Настройте .htm-файл вручную в Настройках.";
             this.lblSignatureWarning.ForeColor = System.Drawing.Color.DarkOrange;
             this.lblSignatureWarning.Visible = false;
@@ -90,7 +92,7 @@ namespace BulkArchiveMailer.AddIn.UI
             // grid
             //
             this.grid.Location = new System.Drawing.Point(12, 58);
-            this.grid.Size = new System.Drawing.Size(900, 420);
+            this.grid.Size = new System.Drawing.Size(1018, 420);
             this.grid.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                         | System.Windows.Forms.AnchorStyles.Left)
                         | System.Windows.Forms.AnchorStyles.Right)));
@@ -215,24 +217,34 @@ namespace BulkArchiveMailer.AddIn.UI
             this.btnUncheckAll.UseVisualStyleBackColor = true;
             this.btnUncheckAll.Click += new System.EventHandler(this.btnUncheckAll_Click);
 
+            //
+            // btnSettings
+            //
+            this.btnSettings.Location = new System.Drawing.Point(416, 540);
+            this.btnSettings.Size = new System.Drawing.Size(110, 27);
+            this.btnSettings.Text = "Настройки...";
+            this.btnSettings.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
+            this.btnSettings.UseVisualStyleBackColor = true;
+            this.btnSettings.Click += new System.EventHandler(this.btnSettings_Click);
+
             //
             // progressSend
             //
-            this.progressSend.Location = new System.Drawing.Point(430, 543);
+            this.progressSend.Location = new System.Drawing.Point(548, 543);
             this.progressSend.Size = new System.Drawing.Size(300, 20);
             this.progressSend.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
 
             //
             // lblProgressStatus
             //
-            this.lblProgressStatus.Location = new System.Drawing.Point(430, 565);
+            this.lblProgressStatus.Location = new System.Drawing.Point(548, 565);
             this.lblProgressStatus.Size = new System.Drawing.Size(482, 20);
             this.lblProgressStatus.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
 
             //
             // btnClose
             //
-            this.btnClose.Location = new System.Drawing.Point(720, 540);
+            this.btnClose.Location = new System.Drawing.Point(838, 540);
             this.btnClose.Size = new System.Drawing.Size(90, 30);
             this.btnClose.Text = "Закрыть";
             this.btnClose.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
@@ -243,7 +255,7 @@ namespace BulkArchiveMailer.AddIn.UI
             //
             // btnSend
             //
-            this.btnSend.Location = new System.Drawing.Point(816, 540);
+            this.btnSend.Location = new System.Drawing.Point(934, 540);
             this.btnSend.Size = new System.Drawing.Size(96, 30);
             this.btnSend.Text = "Отправить";
             this.btnSend.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
@@ -256,8 +268,8 @@ namespace BulkArchiveMailer.AddIn.UI
             //
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(924, 582);
+            this.ClientSize = new System.Drawing.Size(1042, 582);
-            this.MinimumSize = new System.Drawing.Size(760, 420);
+            this.MinimumSize = new System.Drawing.Size(878, 420);
             this.Controls.Add(this.lblPasswordReminder);
             this.Controls.Add(this.lblSignatureWarning);
             this.Controls.Add(this.grid);
@@ -266,6 +278,7 @@ namespace BulkArchiveMailer.AddIn.UI
             this.Controls.Add(this.btnRescan);
             this.Controls.Add(this.btnCheckAllReady);
             this.Controls.Add(this.btnUncheckAll);
+            this.Controls.Add(this.btnSettings);
             this.Controls.Add(this.progressSend);
             this.Controls.Add(this.lblProgressStatus);
             this.Controls.Add(this.btnClose);

outlook-bulk-sender/BulkArchiveMailer.AddIn/UI/PreviewForm.cs

@@ -128,6 +128,17 @@ namespace BulkArchiveMailer.AddIn.UI
 
         private void UpdateSummaryLabel()
         {
+            if (rows == null)
+            {
+                // Can be invoked before RunScan() ever ran - most notably,
+                // WinForms fires DataGridView.CellValueChanged as a side
+                // effect of DataGridViewColumn.HeaderText assignments in
+                // InitializeComponent(), i.e. before the constructor (and
+                // therefore RunScan()) has had a chance to populate `rows`.
+                // Nothing to summarize yet in that case.
+                return;
+            }
+
             var ready = rows.Count(r => r.Job.Status == SendStatus.Ready);
             var already = rows.Count(r => r.Job.Status == SendStatus.AlreadySent);
             var errors = rows.Count(r => r.Job.Status == SendStatus.Error);
@@ -161,6 +172,34 @@ namespace BulkArchiveMailer.AddIn.UI
             RunScan();
         }
 
+        private void btnSettings_Click(object sender, EventArgs e)
+        {
+            using (var settingsForm = new SettingsForm(outlookApplication))
+            {
+                settingsForm.ShowDialog(this);
+            }
+
+            // Regardless of DialogResult (OK or Cancel), reload settings and
+            // rescan so a changed archive folder, domain, or templates are
+            // reflected immediately without a separate "Пересканировать"
+            // click. A closed-without-saving dialog just reloads the same
+            // settings again, which is harmless.
+            try
+            {
+                settings = AppSettings.Load();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(this, "Не удалось прочитать настройки: " + ex.ToString(), "BulkArchiveMailer", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+
+            signatureHtml = ResolveSignatureHtml();
+            lblSignatureWarning.Visible = string.IsNullOrEmpty(signatureHtml);
+
+            RunScan();
+        }
+
         private void btnCheckAllReady_Click(object sender, EventArgs e)
         {
             foreach (var row in rows)