feat: implement maintenance and dev-tools roles and enhance maintenance script

ansible/roles/maintenance/tasks/main.yml

@@ -0,0 +1,28 @@
+---
+- name: Cleanup legacy VS Code remnants
+  ansible.builtin.file:
+    path: "{{ item }}"
+    state: absent
+  loop:
+    - "/home/mw/.vscode-oss"
+    - "/home/mw/.vscode"
+    - "/home/mw/.config/Code"
+    - "/home/mw/.config/Code - OSS"
+
+- name: Cleanup legacy local AI tools
+  ansible.builtin.file:
+    path: "{{ item }}"
+    state: absent
+  loop:
+    - "/home/mw/.local/share/ollama"
+    - "/home/mw/.ollama"
+
+- name: System maintenance tasks
+  ansible.builtin.command:
+    cmd: "{{ item }}"
+  loop:
+    - "paccache -r"
+    - "journalctl --vacuum-time=7d"
+  register: maintenance_result
+  changed_when: "'deleted' in maintenance_result.stdout or 'Vacuuming' in maintenance_result.stdout"
+  failed_when: false