Update upstream scripts

Author: hustcer

.scripts/powershell.ps1

@@ -52,13 +52,6 @@ try {
   }
   Expand-Archive "${HOME}\moonbit.zip" -DestinationPath $MoonHome -Force
   Remove-Item -Force "${HOME}\moonbit.zip"
-  if (Test-Path -Path "$MoonHome\bin\internal\moon-pilot\lib\prompt\moonbitlang.mbt.md") {
-    if (Test-Path -Path "$MoonHome\AGENTS.md") {
-      Remove-Item -Force -Path "$MoonHome\AGENTS.md"
-    }
-    # SymbolicLink on Windows requires elevated privileges, so use HardLink instead
-    New-Item -ItemType HardLink -Path "${MoonHome}\AGENTS.md" -Value "$MoonHome\bin\internal\moon-pilot\lib\prompt\moonbitlang.mbt.md"
-  }
 
   Write-Output "Downloading core ..."
   if (Test-Path -Path $MoonLib\core) {

.scripts/unix.sh

@@ -137,15 +137,6 @@ rm -rf "${moon_home:?}/include" ||
 tar xf "$moonbit_dest" --directory="$moon_home" ||
   error "Failed to extract moonbit to \"$moon_home\""
 
-if [[ -f "$moon_home/bin/internal/moon-pilot/lib/prompt/moonbitlang.mbt.md" ]]; then
-  if [[ -f "$moon_home/AGENTS.md" ]]; then
-    rm -f "$moon_home/AGENTS.md" ||
-      error "Failed to remove existing $moon_home/AGENTS.md"
-  fi
-  ln -s "$moon_home/bin/internal/moon-pilot/lib/prompt/moonbitlang.mbt.md" "$moon_home/AGENTS.md" ||
-    error "Failed to create symlink for $moon_home/bin/internal/moon-pilot/lib/prompt/moonbitlang.mbt.md"
-fi
-
 rm -f "$moonbit_dest" ||
   error "Failed to remove \"$moonbit_dest\""