Fix zsh alias error and sync packages across Dockerfiles

Fixed zsh configuration:
- Fixed '?' alias that was causing 'no matches found' error in zsh
- Added proper bat alias (bat → batcat on Ubuntu)
- Added conditional alias handling for different shells

Synchronized packages across Dockerfiles:
- Added bat, mpack, pandoc to Dockerfile.scratch
- Enhanced package cleanup in Dockerfile.scratch
- Both Dockerfiles now have identical package lists

New packages available:
- bat (as batcat) - syntax-highlighted cat alternative
- mpack - MIME email utilities
- pandoc - document converter

All shells (bash, zsh, fish) now work without errors!

files/zshrc

@@ -100,11 +100,18 @@ alias egrep='egrep --color=auto'
 
 # Tool aliases
 alias fd='fdfind'
+alias bat='batcat'  # Ubuntu names it batcat
 alias rg='rg --color=auto'
 alias analyse='fhelp'
-alias ?='fhelp'
 alias help='fhelp'
 
+# Help alias (? needs special handling in zsh)
+if [[ -n "$ZSH_VERSION" ]]; then
+    alias \?='fhelp'
+else
+    alias '?'='fhelp'
+fi
+
 # Quick navigation
 alias ..='cd ..'
 alias ...='cd ../..'