modoptions: string 设置项直接给文本框 + 游戏内文本输入层（并修复键位配置界面被盖住）

Source/IMaterialAcrylicPage.cs

@@ -2,5 +2,13 @@ namespace Celeste.Mod.MicroblocksQolUtils;
 
 internal interface IMaterialAcrylicPage {
     bool SuppressNormalRender { get; set; }
+
+    /// <summary>
+    /// False while a foreground popup (string editor, key binding config) owns the screen:
+    /// the acrylic path renders the whole scene into a blurred backdrop, which would swallow
+    /// the popup. Falling back to the normal render keeps the popup on top.
+    /// </summary>
+    bool AllowsAcrylic { get; }
+
     void RenderMaterialContent(bool acrylicActive);
 }

Source/MaterialAcrylicRenderer.cs

@@ -59,6 +59,7 @@ private static void RenderCore(On.Monocle.Engine.orig_RenderCore orig, Engine se
         if (rendering
             || failed
             || page is null
+            || !page.AllowsAcrylic
             || !settings.MaterialAcrylicBackground
             || Engine.Scene is not Scene) {
             orig(self);

Source/MaterialChapterSelect.cs

@@ -56,6 +56,8 @@ public sealed class MaterialChapterSelect : Oui, IMaterialAcrylicPage {
 
     public bool SuppressNormalRender { get; set; }
 
+    public bool AllowsAcrylic => true;
+
     internal static MaterialChapterSelect? ActivePage {
         get {
             if (Engine.Scene is not Overworld overworld) return null;