0.3.0: Freunde und Lobby, Server-Browser entfernt

- Seite Freunde: hinzufuegen, annehmen, online-Anzeige, Lobby erstellen/einladen/beitreten, Server starten
- SPIELEN in der Lobby: Ticket fuer die Lobby + Relay-Adresse in BSO.json
- Knopf 'Mod herunterladen' holt jederzeit die neueste Mod

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

MainForm.cs

@@ -19,9 +19,9 @@ public sealed class MainForm : Form
     readonly Settings settings = Settings.Load();
 
     /// <summary>Befehle, die nur einmal gleichzeitig laufen duerfen (Downloads/Installationen/Start).</summary>
-    static readonly HashSet<string> Exclusive = new() { "installMod", "launch", "join", "installLauncherUpdate", "uninstall" };
+    static readonly HashSet<string> Exclusive = new() { "installMod", "launch", "playLobby", "installLauncherUpdate", "uninstall" };
     readonly HashSet<string> running = new();
-    static readonly HashSet<string> QuietCommands = new() { "window", "status", "me", "init", "releases", "servers" };
+    static readonly HashSet<string> QuietCommands = new() { "window", "status", "me", "init", "releases", "friends", "lobby" };
     bool updateInstalled;
     static readonly JsonSerializerOptions Json = new() { PropertyNamingPolicy = JsonNamingPolicy.CamelCase };
 
@@ -288,18 +288,23 @@ public sealed class MainForm : Form
                 return await InstallMod();
             case "launch":
                 return await Launch();
-            case "servers":
-                return await ServerList();
-            case "join":
-            {
-                // Beitreten: Server merken, beim Start automatisch verbinden, Spiel starten
-                string address = Arg(args, "address").Trim();
-                if (address.Length == 0 || address.Length > 260) throw new Exception("Ungueltige Serveradresse");
-                settings.Server = address;
-                settings.AutoConnect = true;
-                settings.Save();
-                return await Launch();
-            }
+            case "playLobby":
+                return await Launch(lobby: true);
+
+            // --- Freunde und Lobby (Website, mit dem Konto-Token)
+            case "friends": return await Site("GET", "/api/friends");
+            case "friendRequest": return await Site("POST", "/api/friends/request", new { username = Arg(args, "username").Trim() });
+            case "friendAccept": return await Site("POST", "/api/friends/accept", new { id = Arg(args, "id") });
+            case "friendRemove": return await Site("POST", "/api/friends/remove", new { id = Arg(args, "id") });
+            case "lobby": return await Site("GET", "/api/lobby");
+            case "lobbyCreate": return await Site("POST", "/api/lobby/create");
+            case "lobbyInvite": return await Site("POST", "/api/lobby/invite", new { accountId = Arg(args, "accountId") });
+            case "lobbyJoin": return await Site("POST", "/api/lobby/join", new { lobbyId = Arg(args, "lobbyId") });
+            case "lobbyDecline": return await Site("POST", "/api/lobby/decline", new { lobbyId = Arg(args, "lobbyId") });
+            case "lobbyLeave": return await Site("POST", "/api/lobby/leave");
+            case "lobbyKick": return await Site("POST", "/api/lobby/kick", new { accountId = Arg(args, "accountId") });
+            case "lobbyStart": return await Site("POST", "/api/lobby/start");
+            case "lobbyStop": return await Site("POST", "/api/lobby/stop");
             case "releases":
             {
                 var r = await Api.Releases();
@@ -375,19 +380,21 @@ public sealed class MainForm : Form
         };
     }
 
-    /// <summary>Serverliste der Website, jeder Server direkt angefragt (Ping, aktuelle Spielerzahl). Nicht erreichbar = ohne Ping.</summary>
-    static async Task<object> ServerList()
+    /// <summary>Anfrage an die Website mit dem Konto-Token. Abgelaufene Anmeldung -> zurueck zum Anmelden.</summary>
+    async Task<JsonElement> Site(string method, string path, object? body = null)
     {
-        var servers = await Api.Servers();
-        var pings = await Task.WhenAll(servers.Select(s => ServerPing.Query(s.host, s.port)));
-        return servers.Select((s, i) => new
-        {
-            s.name, s.description, s.address, s.version,
-            players = pings[i]?.Players ?? s.players,
-            maxPlayers = pings[i]?.MaxPlayers ?? s.maxPlayers,
-            ping = pings[i]?.Ping,
-            compatible = s.protocol == 0 || s.protocol == 2 // Protokoll der Mod, die der Launcher installiert
-        }).OrderBy(s => s.ping == null).ThenByDescending(s => s.players).ToList();
+        string token = settings.Token ?? throw new Exception("Bitte anmelden");
+        var r = method == "GET" ? await Api.Get(path, token) : await Api.Post(path, token, body);
+        if (r.Status == 401) { LoggedOut(); throw new Exception("Anmeldung abgelaufen - bitte neu anmelden"); }
+        if (!r.Ok) throw new Exception(r.Error ?? "Fehlgeschlagen");
+        return r.Json;
+    }
+
+    void LoggedOut()
+    {
+        settings.Token = null;
+        settings.Save();
+        Emit(new { @event = "loggedOut" });
     }
 
     async Task<object> InstallMod()
@@ -400,7 +407,8 @@ public sealed class MainForm : Form
         return new { version = latest.version };
     }
 
-    async Task<object> Launch()
+    /// <summary>Spiel starten. lobby: auf den Server der eigenen Lobby (laeuft im BSO-Relay), sonst auf settings.Server.</summary>
+    async Task<object> Launch(bool lobby = false)
     {
         string folder = Game.FindFolder(settings) ?? throw new Exception("Bus-Simulator 2012 nicht gefunden - in den Einstellungen den Spielordner waehlen");
         if (!Game.DotnetInstalled()) throw new Exception("Fuer BSO fehlt die .NET 10 Runtime (x64) - unter \"Status\" herunterladen");
@@ -415,22 +423,22 @@ public sealed class MainForm : Form
             else if (installed == null) throw new Exception("BSO ist nicht installiert und der BSO-Server ist nicht erreichbar");
         }
 
-        // Spiel-Ticket: ohne gueltiges Konto kein Multiplayer (Mod und Server pruefen es)
-        string token = settings.Token ?? throw new Exception("Bitte anmelden");
-        var t = await Api.Ticket(token);
-        if (t.Status == 401)
+        // Spiel-Ticket: ohne gueltiges Konto kein Multiplayer (Mod und Relay pruefen es). Fuer die Lobby gilt es fuer deren Server.
+        var t = await Site("POST", "/api/auth/ticket", lobby ? new { lobby = true } : null);
+        string ticket = t.GetProperty("ticket").GetString()!;
+        if (lobby)
         {
-            settings.Token = null;
-            settings.Save();
-            Emit(new { @event = "loggedOut" });
-            throw new Exception("Anmeldung abgelaufen - bitte neu anmelden");
+            string lobbyId = t.GetProperty("lobby").GetString()!, label = t.GetProperty("lobbyName").GetString() ?? "Lobby";
+            string relay = (await Site("GET", "/api/config")).GetProperty("relay").GetString()!;
+            Game.WriteModConfig(folder, settings.Username, "relay:" + lobbyId, true, ticket, label, relay);
+            LauncherLog.Info($"Spiel gestartet ({label} ueber {relay})");
+        }
+        else
+        {
+            Game.WriteModConfig(folder, settings.Username, settings.Server, settings.AutoConnect, ticket);
+            LauncherLog.Info($"Spiel gestartet (Server {settings.Server}, automatisch verbinden {settings.AutoConnect})");
         }
-        if (!t.Ok) throw new Exception("Konto konnte nicht geprueft werden: " + t.Error);
-        string ticket = t.Json.GetProperty("ticket").GetString()!;
-
-        Game.WriteModConfig(folder, settings.Username, settings.Server, settings.AutoConnect, ticket);
         Game.Launch();
-        LauncherLog.Info($"Spiel gestartet (Server {settings.Server}, automatisch verbinden {settings.AutoConnect})");
         if (!settings.KeepOpen)
         {
             await Task.Delay(2500);