MSCO 2.9.1: fixes without MSCLoader, admin teleport, MSCO branding

- Own JSON reader (MiniJson) instead of Newtonsoft.Json - the server browser failed with
  "Could not load System.Runtime.Serialization" once MSCLoader was gone
- Mouse cursor visible in admin menu/chat/console (PlayerInMenu)
- Intro "Press any key" screen replaced by an MSCO loading screen; hook PlayMakerFSM.Awake too
- Join links while the game runs: picked up from MSCO\join.txt (written by the launcher)
- Admin menu: TELEPORT tab (home, shop, repair shop, inspection, villages, events, Satsuma)
- Window title/icon "MSCO - My Summer Car Online", MSCO logo in the main menu
- In-game UI restyled like the keymaster website (rounded cards, pills, glow, slim scrollbars)

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

InputLock.cs

@@ -2,6 +2,7 @@ using System;
 using System.Collections.Generic;
 using System.Reflection;
 using Harmony;
+using HutongGames.PlayMaker;
 using UnityEngine;
 
 namespace MSCO
@@ -20,7 +21,7 @@ namespace MSCO
 
         static readonly List<Behaviour> disabled = new List<Behaviour>();
         static bool locked;
-        static bool previousVisible;
+        static bool previousVisible, previousInMenu;
         static CursorLockMode previousLock;
         static bool patched;
 
@@ -37,6 +38,8 @@ namespace MSCO
                 PatchCursorActions();
                 previousVisible = Cursor.visible;
                 previousLock = Cursor.lockState;
+                FsmBool inMenu = PlayerInMenu();
+                previousInMenu = inMenu != null && inMenu.Value;
                 GameObject player = GameObject.Find("PLAYER");
                 if (player != null)
                 {
@@ -57,6 +60,8 @@ namespace MSCO
                 PlayMakerGUI.HideCursor = !previousVisible;
                 Cursor.visible = previousVisible;
                 Cursor.lockState = previousLock;
+                FsmBool inMenu = PlayerInMenu();
+                if (inMenu != null) inMenu.Value = previousInMenu;
             }
         }
 
@@ -71,6 +76,16 @@ namespace MSCO
             PlayMakerGUI.HideCursor = false;
             Cursor.visible = true;
             Cursor.lockState = CursorLockMode.None;
+            // So zeigt MSC selbst den Mauszeiger (Pausemenü, Kasse ...) - ohne MSCLoader brauchen wir das auch
+            FsmBool inMenu = PlayerInMenu();
+            if (inMenu != null) inMenu.Value = true;
+        }
+
+        /// <summary>Globale Spielvariable "PlayerInMenu": true = Zeiger frei, Mausblick aus.</summary>
+        static FsmBool PlayerInMenu()
+        {
+            try { return FsmVariables.GlobalVariables.FindFsmBool("PlayerInMenu"); }
+            catch { return null; }
         }
 
         /// <summary>