Enhance Sway/Noctalia integration and align desktop docs

- Add canonical usb-drive-manager plugin to Noctalia (symlink from official)
- Remove nm-applet and blueman packages from nymph Sway session
- Run udiskie without tray (backend for automount/LUKS, UI via usb-drive-manager)
- Add screenOverrides support to Noctalia bar via inventory variables
- Add host_packages_absent task to packages_void role
- Update desktop docs with full plugin list and config layering
- Add focused validation check for Sway/Noctalia bootstrap

ansible/roles/profile_desktop_sway/tasks/noctalia.yml

@@ -113,6 +113,21 @@
     owner: "{{ username }}"
     group: "{{ user_group }}"
 
+- name: Check if usb-drive-manager is a real directory (needs migration to symlink)
+  ansible.builtin.stat:
+    path: "{{ user_home }}/.config/noctalia/plugins/usb-drive-manager"
+    follow: false
+  register: usb_drive_manager_path_state
+
+- name: Remove old usb-drive-manager directory (migration to symlink)
+  ansible.builtin.file:
+    path: "{{ user_home }}/.config/noctalia/plugins/usb-drive-manager"
+    state: absent
+  when:
+    - usb_drive_manager_path_state.stat.exists
+    - usb_drive_manager_path_state.stat.isdir
+    - not (usb_drive_manager_path_state.stat.islnk | default(false))
+
 - name: Link official Noctalia plugins
   ansible.builtin.file:
     src: "{{ user_home }}/.local/share/noctalia-plugins/official/{{ item }}"
@@ -124,3 +139,4 @@
   loop:
     - polkit-agent
     - screenshot
+    - usb-drive-manager