feat: formalize in-flight hyprland/dotfiles/role changes

Claude-Session: https://claude.ai/code/session_01PaGefHKzMcjAhoHpNKUe27

roles/common/defaults/main.yml

@@ -2,5 +2,5 @@
 archsetup_user: "{{ ansible_user_id }}"
 archsetup_repo: "{{ lookup('env', 'ARCHSETUP_REPO', default='https://github.com/YOUR_USERNAME/archsetup') }}"
 archsetup_user_home: "{{ lookup('env', 'HOME') }}"
-archsetup_dir: "{{ archsetup_user_home }}/archsetup"
+archsetup_dir: "{{ playbook_dir }}"
 aur_helper: paru