fix: skip proxy-only plugin initialization for CLI subcommands

DevProxy.Abstractions/Proxy/ProxyEvents.cs

@@ -45,6 +45,13 @@ public class ProxyResponseArgs(SessionEventArgs session, ResponseState responseS
 public class InitArgs
 {
     public required IServiceProvider ServiceProvider { get; init; }
+    /// <summary>
+    /// Indicates whether the proxy command (root command) is being invoked.
+    /// When false, a CLI subcommand is being executed and plugins should
+    /// skip initialization that is only relevant for proxy operation
+    /// (e.g., opening browsers, starting listeners).
+    /// </summary>
+    public bool IsProxyCommand { get; init; } = true;
 }
 
 public class OptionsLoadedArgs(ParseResult parseResult)

DevProxy.Plugins/Inspection/DevToolsPlugin.cs

@@ -78,10 +78,17 @@ public sealed class DevToolsPlugin(
 
     public override async Task InitializeAsync(InitArgs e, CancellationToken cancellationToken)
     {
+        ArgumentNullException.ThrowIfNull(e);
+
         _cancellationToken = cancellationToken;
 
         await base.InitializeAsync(e, cancellationToken);
 
+        if (!e.IsProxyCommand)
+        {
+            return;
+        }
+
         InitInspector();
     }
 

DevProxy.Plugins/Inspection/OpenAITelemetryPlugin.cs

@@ -76,6 +76,11 @@ public override async Task InitializeAsync(InitArgs e, CancellationToken cancell
 
         await base.InitializeAsync(e, cancellationToken);
 
+        if (!e.IsProxyCommand)
+        {
+            return;
+        }
+
         if (Configuration.IncludeCosts)
         {
             Configuration.PricesFile = ProxyUtils.GetFullPath(Configuration.PricesFile, ProxyConfiguration.ConfigFile);

DevProxy/Plugins/PluginServiceExtensions.cs

@@ -181,7 +181,7 @@ private static void RegisterPlugin(
                 // stage is synchronous, but if the implementation changes
                 // in the future then we won't need to change the interface
 #pragma warning disable VSTHRD002
-                plugin.InitializeAsync(new() { ServiceProvider = sp }, CancellationToken.None).Wait();
+                plugin.InitializeAsync(new() { ServiceProvider = sp, IsProxyCommand = DevProxyCommand.IsRootCommand }, CancellationToken.None).Wait();
 #pragma warning restore VSTHRD002
                 return plugin;
             });
@@ -200,7 +200,7 @@ private static void RegisterPlugin(
             // stage is synchronous, but if the implementation changes
             // in the future then we won't need to change the interface
 #pragma warning disable VSTHRD002
-            plugin.InitializeAsync(new() { ServiceProvider = sp }, CancellationToken.None).Wait();
+            plugin.InitializeAsync(new() { ServiceProvider = sp, IsProxyCommand = DevProxyCommand.IsRootCommand }, CancellationToken.None).Wait();
 #pragma warning restore VSTHRD002
             return plugin;
         });