feat: Replace LibreOffice with OnlyOffice as default office suite

- Add onlyoffice.yml task for OnlyOffice Desktop Editors installation
- Set install_onlyoffice: true as default (better MS Office compatibility)
- Keep LibreOffice as opt-in (install_libreoffice: false)
- Add to main.yml with GNOME check (only install on desktop systems)

OnlyOffice provides better MS Office file format compatibility which
is essential for enterprise environments.

Author: Derek

TODO.md

@@ -2,17 +2,25 @@
 
 ## Completed This Session
 
-- [x] Fix `ai/` directory management for public repos
-  - Keep `.git/` intact for manual updates via `git -C ai pull`
-  - `/load` uses Glob (no bash approval) to check if `ai/` exists
-  - Updated: `.gitignore`, `.claude/commands/load.md`
-  - Also fixed in `/projects/ai`: `attach-public.sh`, `README.md`
-- [x] GitHub Issue #1: D-Bus fix for ui-mode - tested and verified
-  - Commit: `6cf453a`
-- [x] E2E testing on Fedora/Ubuntu with multiple tag combinations
-  - `--all`, `--core`, `--winlike`, `--maclike`, `--rdp` all passed
-  - `--maclike` hit GitHub API rate limit (ArgoCD) - unrelated to changes
-- [x] VMs reset to `initial_build` snapshot
+- [x] Remove dfe_ prefix from all Ansible roles
+  - `dfe_developer` → `developer`
+  - `dfe_developer_core` → `developer_core`
+  - `dfe_rdp` → `rdp`
+  - `dfe_system_cleanup` → `system_cleanup`
+  - `dfe_vm_optimizer` → `vm_optimizer`
+- [x] Remove dfe_ prefix from all variables
+  - `actual_user`, `user_home`, `has_gnome`, `ui_mode`, etc.
+  - Docker variables: `docker_users`, `docker_install_desktop`, etc.
+  - Branding variables: `branding_enabled`, `avatar_file`, `background_file`
+- [x] Update file paths to remove "dfe" branding
+  - `/etc/profile.d/dfe-path.sh` → `/etc/profile.d/dev-path.sh`
+  - `~/.config/dfe/` → `~/.config/devenv/`
+  - `dfe-vaapi-check*` → `vaapi-check*`
+  - `dconf-dfe-defaults-*` → `dconf-defaults-*`
+- [x] Fix: Add dconf database directory creation (Ubuntu fix)
+- [x] Test on Fedora 42 and Ubuntu 24.04 (both passed)
+- [x] Commit: `3425010` - refactor: remove dfe_ prefix from roles and variables
+- [x] Reset VMs to `initial_build` snapshot
 
 ## Immediate Tasks
 

ansible/roles/developer/defaults/main.yml

@@ -40,5 +40,10 @@ avatar_file: "user-avatar.png"
 # Only deployed if branding_enabled is true
 background_file: "default-background.svg"
 
-# Install LibreOffice (opt-in, disabled by default)
+# ============================================================================
+# OFFICE SUITE
+# ============================================================================
+# OnlyOffice is the default (better MS Office compatibility)
+# LibreOffice is opt-in for users who prefer it
+install_onlyoffice: true
 install_libreoffice: false

ansible/roles/developer/tasks/main.yml

@@ -140,6 +140,16 @@
       tags: ['data']
   tags: ['data']
 
+- name: Install OnlyOffice Desktop Editors
+  ansible.builtin.include_tasks:
+    file: onlyoffice.yml
+    apply:
+      tags: ['onlyoffice']
+  tags: ['onlyoffice']
+  when:
+    - has_gnome | default(false)
+    - install_onlyoffice | default(true)
+
 - name: Install VS Code
   ansible.builtin.include_tasks:
     file: vscode.yml

ansible/roles/developer/tasks/onlyoffice.yml

@@ -0,0 +1,41 @@
+---
+# OnlyOffice Desktop Editors installation
+# https://www.onlyoffice.com/desktop.aspx
+#
+# OnlyOffice is a modern office suite with MS Office compatibility
+# Installs from official OnlyOffice apt repository
+
+- name: Add OnlyOffice GPG key (Ubuntu)
+  ansible.builtin.apt_key:
+    url: https://download.onlyoffice.com/GPG-KEY-ONLYOFFICE
+    state: present
+  when: ansible_facts['distribution'] == 'Ubuntu'
+
+- name: Add OnlyOffice apt repository (Ubuntu)
+  ansible.builtin.apt_repository:
+    repo: "deb https://download.onlyoffice.com/repo/debian squeeze main"
+    state: present
+    filename: onlyoffice
+  when: ansible_facts['distribution'] == 'Ubuntu'
+
+- name: Install OnlyOffice Desktop Editors (Ubuntu)
+  ansible.builtin.apt:
+    name: onlyoffice-desktopeditors
+    state: present
+    update_cache: true
+  when: ansible_facts['distribution'] == 'Ubuntu'
+
+- name: Add OnlyOffice rpm repository (Fedora)
+  ansible.builtin.yum_repository:
+    name: onlyoffice
+    description: OnlyOffice Desktop Editors
+    baseurl: https://download.onlyoffice.com/repo/centos/main/noarch/
+    gpgcheck: true
+    gpgkey: https://download.onlyoffice.com/GPG-KEY-ONLYOFFICE
+  when: ansible_facts['distribution'] == 'Fedora'
+
+- name: Install OnlyOffice Desktop Editors (Fedora)
+  ansible.builtin.dnf:
+    name: onlyoffice-desktopeditors
+    state: present
+  when: ansible_facts['distribution'] == 'Fedora'