Merge claudedo/5f664041b046456d8e752f90d193c906

src/ClaudeDo.Installer/Core/ConfigModels.cs

@@ -52,6 +52,9 @@ public sealed class InstallerWorkerConfig
     [JsonPropertyName("claude_bin")]
     public string ClaudeBin { get; set; } = "claude";
 
+    [JsonPropertyName("external_mcp_port")]
+    public int ExternalMcpPort { get; set; } = 47_822;
+
     private static readonly JsonSerializerOptions ReadOpts = new()
     {
         ReadCommentHandling = JsonCommentHandling.Skip,

src/ClaudeDo.Installer/Steps/RegisterMcpStep.cs

@@ -5,9 +5,23 @@ namespace ClaudeDo.Installer.Steps;
 public sealed class RegisterMcpStep : IInstallStep
 {
     private const string ServerName = "claudedo";
+    private readonly Func<InstallerWorkerConfig> _loadWorkerConfig;
+
+    public RegisterMcpStep(Func<InstallerWorkerConfig>? loadWorkerConfig = null)
+    {
+        _loadWorkerConfig = loadWorkerConfig ?? InstallerWorkerConfig.Load;
+    }
 
     public string Name => "Register MCP with Claude";
 
+    // Resolves the URL from the persisted worker.config.json rather than ctx.ExternalMcpPort:
+    // an Update run never repopulates ctx from the existing installation, so ctx would still
+    // hold the wizard default (47822) even when the installed config has a different port.
+    // Returns null when the port is 0 — WorkerConfig treats that as "external listener off",
+    // so registering a URL against it would just point Claude at nothing.
+    public static string? ResolveUrl(InstallerWorkerConfig cfg) =>
+        cfg.ExternalMcpPort == 0 ? null : $"http://127.0.0.1:{cfg.ExternalMcpPort}/mcp";
+
     public async Task<StepResult> ExecuteAsync(InstallContext ctx, IProgress<string> progress, CancellationToken ct)
     {
         if (!ctx.RegisterMcpWithClaude)
@@ -16,7 +30,12 @@ public sealed class RegisterMcpStep : IInstallStep
             return StepResult.Ok();
         }
 
-        var url = $"http://127.0.0.1:{ctx.ExternalMcpPort}/mcp";
+        var url = ResolveUrl(_loadWorkerConfig());
+        if (url is null)
+        {
+            progress.Report("Skipped (external_mcp_port is 0 — the external MCP listener is disabled).");
+            return StepResult.Ok();
+        }
 
         // Drop any prior registration first so a re-run (e.g. update, changed port)
         // overwrites cleanly instead of erroring on a duplicate name.