fix(POSTV1-runtime): 改善后台启动与状态窗口可见性

supervisor/Dada.Supervisor/Program.cs

@@ -30,7 +30,10 @@ internal static class Program
             };
             var state = await runtime.StartAsync();
             if (!form.IsDisposed) form.SetState(state);
-            if (state == SupervisorState.Ready) SupervisorForm.OpenProductInSupportedBrowser();
+            if (state == SupervisorState.Ready && !SupervisorForm.OpenProductInSupportedBrowser())
+            {
+                form.SetBrowserLaunchFailure();
+            }
         }
         form.Shown += async (_, _) => await StartRuntimeAsync();
         form.RestartRequested += async () => await StartRuntimeAsync();

supervisor/Dada.Supervisor/SupervisorForm.cs

@@ -26,6 +26,7 @@ internal sealed class SupervisorForm : Form
         Font = new Font("Segoe UI", 9F);
         FormBorderStyle = FormBorderStyle.FixedDialog;
         MaximizeBox = false;
+        ShowInTaskbar = true;
         StartPosition = FormStartPosition.CenterScreen;
         Text = "Dada";
 
@@ -90,10 +91,6 @@ internal sealed class SupervisorForm : Form
         trayIcon.DoubleClick += (_, _) => RestoreWindow();
 
         FormClosing += (_, _) => trayIcon.Visible = false;
-        Resize += (_, _) =>
-        {
-            if (WindowState == FormWindowState.Minimized) Hide();
-        };
         SetState(initialState);
     }
 
@@ -139,6 +136,14 @@ internal sealed class SupervisorForm : Form
         Activate();
     }
 
+    internal void SetBrowserLaunchFailure()
+    {
+        if (state == SupervisorState.Ready)
+        {
+            statusDetail.Text = "本机服务运行正常，但未能自动打开浏览器；请点击“打开 Dada”或选择浏览器。";
+        }
+    }
+
     protected override void Dispose(bool disposing)
     {
         if (disposing) trayIcon.Dispose();

supervisor/Dada.Supervisor/SupportedBrowserLauncher.cs

@@ -1,3 +1,4 @@
+using System.ComponentModel;
 using System.Diagnostics;
 using Microsoft.Win32;
 
@@ -13,10 +14,20 @@ internal static class SupportedBrowserLauncher
     {
         var executable = FindExecutable(executableName);
         if (executable is null) return false;
-        var startInfo = new ProcessStartInfo(executable) { UseShellExecute = false };
-        startInfo.ArgumentList.Add(uri.AbsoluteUri);
-        Process.Start(startInfo);
-        return true;
+        try
+        {
+            var startInfo = new ProcessStartInfo(executable) { UseShellExecute = false };
+            startInfo.ArgumentList.Add(uri.AbsoluteUri);
+            return Process.Start(startInfo) is not null;
+        }
+        catch (Win32Exception)
+        {
+            return false;
+        }
+        catch (InvalidOperationException)
+        {
+            return false;
+        }
     }
 
     private static string? FindExecutable(string executableName)