fix: save refreshed tokens for server URLs with a trailing slash

src/EchoHub.Client/AppOrchestrator.cs

@@ -2232,8 +2232,7 @@ public sealed class AppOrchestrator : IDisposable
         if (url is null) return;
 
         var config = ConfigManager.Load();
-        var server = config.SavedServers.FirstOrDefault(s =>
-            string.Equals(s.Url, url, StringComparison.OrdinalIgnoreCase));
+        var server = config.FindServer(url);
         if (server is null) return;
 
         mutate(server);

src/EchoHub.Client/Config/ClientConfig.cs

@@ -18,6 +18,14 @@ public class ClientConfig
     /// Applies to copy-paste/drag-drop attachments, which have no per-file size flag.
     /// </summary>
     public string DefaultAsciiSize { get; set; } = "m";
+
+    /// <summary>
+    /// Finds a saved server by URL. A trailing slash is ignored: entries keep the URL as the
+    /// user typed it, while <see cref="Services.ApiClient.BaseUrl"/> has the slash removed.
+    /// </summary>
+    public SavedServer? FindServer(string url) =>
+        SavedServers.FirstOrDefault(s =>
+            string.Equals(s.Url.TrimEnd('/'), url.TrimEnd('/'), StringComparison.OrdinalIgnoreCase));
 }
 
 public class NotificationConfig

src/EchoHub.Client/Services/ConnectionManager.cs

@@ -152,7 +152,7 @@ internal sealed class ConnectionManager : IAsyncDisposable
             // all of them, not just channels opened this session. Channels the user left
             // with /leave stay out until rejoined; protected channels we can't enter
             // silently (no cached membership) are skipped, never prompted for.
-            var leftChannels = FindServer(ConfigManager.Load(), info.ServerUrl)?.LeftChannels ?? [];
+            var leftChannels = ConfigManager.Load().FindServer(info.ServerUrl)?.LeftChannels ?? [];
             foreach (var channel in channels)
             {
                 if (channel.Name.Equals(HubConstants.DefaultChannel, StringComparison.OrdinalIgnoreCase))
@@ -332,7 +332,7 @@ internal sealed class ConnectionManager : IAsyncDisposable
     {
         if (_apiClient?.RefreshToken is null) return;
         var config = ConfigManager.Load();
-        var server = FindServer(config, _apiClient.BaseUrl);
+        var server = config.FindServer(_apiClient.BaseUrl);
         if (server is not null && server.RememberMe)
         {
             server.RefreshToken = _apiClient.RefreshToken;
@@ -340,10 +340,6 @@ internal sealed class ConnectionManager : IAsyncDisposable
         }
     }
 
-    private static SavedServer? FindServer(ClientConfig config, string url) =>
-        config.SavedServers.FirstOrDefault(s =>
-            string.Equals(s.Url, url, StringComparison.OrdinalIgnoreCase));
-
     // ── Dispose ───────────────────────────────────────────────────────────
 
     public async ValueTask DisposeAsync()

src/EchoHub.Tests/ClientConfigTests.cs

@@ -0,0 +1,30 @@
+using EchoHub.Client.Config;
+using Xunit;
+
+namespace EchoHub.Tests;
+
+public class ClientConfigTests
+{
+    [Theory]
+    [InlineData("https://echo.example.com/", "https://echo.example.com")]
+    [InlineData("https://echo.example.com", "https://echo.example.com/")]
+    [InlineData("https://echo.example.com", "https://echo.example.com")]
+    [InlineData("https://ECHO.example.com/", "https://echo.example.com")]
+    public void FindServer_IgnoresTrailingSlashAndCase(string savedUrl, string lookupUrl)
+    {
+        var config = new ClientConfig();
+        var server = new SavedServer { Name = "echo", Url = savedUrl };
+        config.SavedServers.Add(server);
+
+        Assert.Same(server, config.FindServer(lookupUrl));
+    }
+
+    [Fact]
+    public void FindServer_OtherServer_ReturnsNull()
+    {
+        var config = new ClientConfig();
+        config.SavedServers.Add(new SavedServer { Name = "echo", Url = "https://echo.example.com/" });
+
+        Assert.Null(config.FindServer("https://other.example.com"));
+    }
+}