feat(service): implement uninstall-service and status verbs

src/ClaudeMailbox/Cli/ServiceCommands.cs

@@ -123,14 +123,67 @@ public static class ServiceCommands
         var admin = RequireAdmin();
         if (admin != 0) return admin;
 
-        Console.Error.WriteLine("uninstall-service: not yet implemented.");
+        var purge = Array.IndexOf(args, "--purge") >= 0;
-        return 1;
+
+        // Best-effort stop; ignore failure if not running.
+        RunSc("stop", ServiceName);
+
+        var deleteExit = RunSc("delete", ServiceName);
+        if (deleteExit != 0)
+        {
+            Console.Error.WriteLine($"sc delete failed (exit {deleteExit}).");
+            return deleteExit;
+        }
+
+        if (purge)
+        {
+            var programData = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
+            var dataDir = Path.Combine(programData, "ClaudeMailbox");
+            if (Directory.Exists(dataDir))
+            {
+                Directory.Delete(dataDir, recursive: true);
+                Console.WriteLine($"Purged: {dataDir}");
+            }
+        }
+
+        Console.WriteLine($"Service '{ServiceName}' uninstalled.");
+        return 0;
     }
 
     [SupportedOSPlatform("windows")]
     private static int Status()
     {
-        Console.Error.WriteLine("status: not yet implemented.");
+        var psi = new ProcessStartInfo("sc.exe")
+        {
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            UseShellExecute = false,
+        };
+        psi.ArgumentList.Add("query");
+        psi.ArgumentList.Add(ServiceName);
+
+        using var proc = Process.Start(psi)!;
+        var stdout = proc.StandardOutput.ReadToEnd();
+        proc.WaitForExit();
+
+        if (proc.ExitCode != 0)
+        {
+            Console.WriteLine("NotInstalled");
+            return 2;
+        }
+
+        var state = stdout.Split('\n')
+            .Select(l => l.Trim())
+            .FirstOrDefault(l => l.StartsWith("STATE", StringComparison.Ordinal))
+            ?? "";
+
+        if (state.Contains("RUNNING", StringComparison.Ordinal))
+        {
+            Console.WriteLine("Running");
+            return 0;
+        }
+
+        Console.WriteLine("Stopped");
         return 1;
     }