fix(plugins): correct navigation keys and menu encoding

scripts/lib/plugins.ps1

@@ -88,7 +88,7 @@ function Read-PluginToggleSelection {
     )
     $state = @($Checked)
     if ([Console]::IsInputRedirected -or $env:CI -eq 'true' -or $env:AI_CONFIG_NO_INTERACTIVE -eq '1') { while($true){ Write-Host 'Select plugins (enter a number to toggle, "done" to confirm):'; for($i=0;$i -lt $Names.Count;$i++){Write-Host ("  {0}) [{1}] {2}" -f ($i+1),$(if($state[$i]){'x'}else{' '}),$Names[$i])}; $answer=Read-Host 'Toggle number or "done"'; if([string]::IsNullOrWhiteSpace($answer)-or $answer -eq 'done'){return $state}; $index=0;if([int]::TryParse($answer,[ref]$index)-and $index -ge 1 -and $index -le $Names.Count){$state[$index-1]= -not $state[$index-1]} } }
-    $index=0; while($true){ Clear-Host; Write-Host 'Select plugins'; for($i=0;$i -lt $Names.Count;$i++){ $focus=if($i -eq $index){'>'}else{' '}; $mark=if($state[$i]){'x'}else{' '}; Write-Host "$focus [$mark] $($Names[$i])" }; Write-Host '↑/↓ Navigate   Space Toggle   Enter Confirm'; $key=[Console]::ReadKey($true); if($key.Key -eq 'Up'){$index=($index+$Names.Count-1)%$Names.Count}elseif($key.Key -eq 'Down'){$index=($index+1)%$Names.Count}elseif($key.Key -eq 'Spacebar'){$state[$index]= -not $state[$index]}elseif($key.Key -eq 'Enter'){Clear-Host;return $state} }
+    $index=0; while($true){ Clear-Host; Write-Host 'Select plugins'; for($i=0;$i -lt $Names.Count;$i++){ $focus=if($i -eq $index){'>'}else{' '}; $mark=if($state[$i]){'x'}else{' '}; Write-Host "$focus [$mark] $($Names[$i])" }; Write-Host 'Up/Down Navigate   Space Toggle   Enter Confirm'; $key=[Console]::ReadKey($true); if($key.Key -eq 'UpArrow'){$index=($index+$Names.Count-1)%$Names.Count}elseif($key.Key -eq 'DownArrow'){$index=($index+1)%$Names.Count}elseif($key.Key -eq 'Spacebar'){$state[$index]= -not $state[$index]}elseif($key.Key -eq 'Enter'){Clear-Host;return $state} }
 }
 
 function Update-CodexMarketplace {

scripts/lib/plugins.sh

@@ -91,7 +91,7 @@ read_plugin_toggle_selection() {
   local -n checked_ref=$2
   local answer i mark index=0 key
   if [ -t 0 ] && [ "${CI:-}" != true ] && [ "${AI_CONFIG_NO_INTERACTIVE:-}" != 1 ]; then
-    while :; do clear_interactive; printf 'Select plugins\n'; for ((i=0;i<${#names_ref[@]};i++)); do mark=' '; [ "${checked_ref[$i]}" = true ] && mark=x; [ "$i" -eq "$index" ] && printf '> [%s] %s\n' "$mark" "${names_ref[$i]}" || printf '  [%s] %s\n' "$mark" "${names_ref[$i]}"; done; printf '↑/↓ Navigate   Space Toggle   Enter Confirm\n'; IFS= read -rsn1 key || return 1; case "$key" in $'\x1b') read -rsn2 key; case "$key" in '[A') index=$(( (index+${#names_ref[@]}-1)%${#names_ref[@]} ));; '[B') index=$(( (index+1)%${#names_ref[@]} ));; esac;; ' ') [ "${checked_ref[$index]}" = true ] && checked_ref[$index]=false || checked_ref[$index]=true;; '') clear_interactive; return 0;; esac; done
+    while :; do clear_interactive; printf 'Select plugins\n'; for ((i=0;i<${#names_ref[@]};i++)); do mark=' '; [ "${checked_ref[$i]}" = true ] && mark=x; [ "$i" -eq "$index" ] && printf '> [%s] %s\n' "$mark" "${names_ref[$i]}" || printf '  [%s] %s\n' "$mark" "${names_ref[$i]}"; done; printf 'Up/Down Navigate   Space Toggle   Enter Confirm\n'; IFS= read -rsn1 key || return 1; case "$key" in $'\x1b') read -rsn2 key; case "$key" in '[A') index=$(( (index+${#names_ref[@]}-1)%${#names_ref[@]} ));; '[B') index=$(( (index+1)%${#names_ref[@]} ));; esac;; ' ') [ "${checked_ref[$index]}" = true ] && checked_ref[$index]=false || checked_ref[$index]=true;; '') clear_interactive; return 0;; esac; done
   fi
   while :; do
     printf 'Select plugins (enter a number to toggle, "done" to confirm):\n'