Define lla alias for zsh using lsd details

[Copilot]

The lla alias needs to be owned by zsh (not bash) and point to the existing detailed lsd listing. This updates zsh configuration so lla is available where it’s expected.

• Zsh alias definition
  • Add lla in zsh config with maximum lsd detail blocks
• Shell scope cleanup
  • Remove bash-scoped lla definition

Example:

alias lla='lsd -la --blocks permission,user,group,size,date,name,inode,links,git'

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