feat: complete 2.0.7.12 platform overhaul

installer/ymhut_box_winui.iss

@@ -56,8 +56,12 @@ DefaultGroupName={#MyAppName}
 OutputDir=..\installer_output
 OutputBaseFilename=YMhut_Box_WinUI_Setup_{#MyAppVersion}
 Compression=lzma2
-CompressionThreads=auto
-LZMADictionarySize=1048576
+; Preserve a high compression ratio without returning to the 1 GiB dictionary,
+; which requires more than 11 GiB of working memory for this solid payload.
+CompressionThreads=1
+LZMADictionarySize=262144
+LZMANumFastBytes=273
+LZMAUseSeparateProcess=yes
 SolidCompression=yes
 WizardStyle=modern
 ShowLanguageDialog=yes
@@ -1059,7 +1063,10 @@ begin
 
     if (CurProgress > 0) then
     begin
-      ProgressPercent := CurProgress * 100 div MaxProgress;
+      { CurProgress can represent tens or hundreds of millions of bytes. Cast
+        before multiplying so large payloads do not raise an integer-overflow
+        runtime error from the progress callback. }
+      ProgressPercent := (Int64(CurProgress) * 100) div MaxProgress;
       if ProgressPercent <> LastInstallProgressPercent then
       begin
         LastInstallProgressPercent := ProgressPercent;