客户端rsa，冗余清理，bug修复，安卓build问题

Assets/scripts/UI/PauseManager.cs

@@ -122,17 +122,13 @@ public class PauseManager : MonoBehaviour
                 {
                     Pause(true);
                 }
-                else
-                {
-                    Pause(false);
-                }
             }
         }
 
         // Keep existing Backspace quick-exit while paused.
         if (IsPaused && Input.GetKeyDown(KeyCode.Backspace))
         {
-            Pause(false);
+            ResumeImmediately(true);
             StartCoroutine(LoadSceneAsync("Main_main"));
         }
     }
@@ -144,6 +140,7 @@ public class PauseManager : MonoBehaviour
             if (IsPaused) return;
             IsPaused = true;
             Time.timeScale = 0f;
+            GameplayClock.Pause();
             OnPauseStateChanged?.Invoke(true);
             
             // Startup flows call Pause(true) before real gameplay starts.
@@ -192,11 +189,38 @@ public class PauseManager : MonoBehaviour
             if (!IsPaused) return;
             IsPaused = false;
             Time.timeScale = 1f;
+            GameplayClock.Resume();
             OnPauseStateChanged?.Invoke(false);
             ShowOverlayAnimated(false);
         }
     }
 
+    private void ResumeImmediately(bool hideOverlay)
+    {
+        if (!IsPaused)
+        {
+            if (hideOverlay)
+            {
+                SetOverlayVisibleImmediate(false);
+            }
+            return;
+        }
+
+        IsPaused = false;
+        Time.timeScale = 1f;
+        GameplayClock.Resume();
+        OnPauseStateChanged?.Invoke(false);
+
+        if (hideOverlay)
+        {
+            SetOverlayVisibleImmediate(false);
+        }
+        else
+        {
+            ShowOverlayAnimated(false);
+        }
+    }
+
     public void TogglePause()
     {
         if (!CanPauseFromInput()) return;
@@ -424,7 +448,11 @@ public class PauseManager : MonoBehaviour
         EnsureOverlayCanvasGroup();
         EnsureOverlayPanelRoot();
 
-        overlayRoot.SetActive(visible);
+        // Keep the overlay hierarchy active even when hidden.
+        // If PauseManager lives on overlayRoot or any of its children, deactivating the root
+        // disables this component and all future ESC input stops working.
+        if (!overlayRoot.activeSelf)
+            overlayRoot.SetActive(true);
         if (overlayCanvasGroup != null)
         {
             overlayCanvasGroup.alpha = visible ? 1f : 0f;
@@ -530,8 +558,8 @@ public class PauseManager : MonoBehaviour
         if (overlayPanelRoot != null)
             overlayPanelRoot.localScale = targetScale;
 
-        if (!show)
-            overlayRoot.SetActive(false);
+        // Do not deactivate overlayRoot here; hiding via CanvasGroup is enough and keeps
+        // PauseManager alive for subsequent ESC presses.
 
         overlayFadeCoroutine = null;
     }
@@ -571,16 +599,13 @@ public class PauseManager : MonoBehaviour
         }
 
         // Resume chart + music.
-        Pause(false);
+        ResumeImmediately(false);
         continueCoroutine = null;
     }
 
     private IEnumerator ReplayFromPauseCoroutine()
     {
-        SetOverlayVisibleImmediate(false);
-        IsPaused = false;
-        Time.timeScale = 1f;
-        try { OnPauseStateChanged?.Invoke(false); } catch { }
+        ResumeImmediately(true);
 
         var bmm = SceneObjectLookupCache.FindAny<BeatmapManager>();
         if (bmm != null && bmm.assignedSongData != null)
@@ -596,10 +621,7 @@ public class PauseManager : MonoBehaviour
 
     private IEnumerator ExitFromPauseCoroutine()
     {
-        SetOverlayVisibleImmediate(false);
-        IsPaused = false;
-        Time.timeScale = 1f;
-        try { OnPauseStateChanged?.Invoke(false); } catch { }
+        ResumeImmediately(true);
 
         string targetScene = ExitSceneName;
         ArenaRoomService arenaRoomService = ArenaRoomService.Instance;