Fix ansible-lint violations: FQCN, formatting, bugs, role renames

- Auto-fix FQCN, YAML formatting, jinja spacing, and free-form module
  syntax via ansible-lint --fix
- Fix comments misplaced inside module args by the auto-fixer
  (bluetooth-monitor, pi_standard_setup, pi_musicmouse)
- Fix notify: references left stale (lowercase) after handler names
  were re-cased, which would have silently broken reboot/restart
  handlers (pi_disable_onboard_bluetooth, pi_hifiberry_amp,
  pi_squeezelite, pi_standard_setup)
- Fix a task in pis/debmatic-install.yml missing its module name
  (apt_repository), which caused a real syntax-check failure
- Add missing play names, fix comment spacing, literal-compare idiom,
  and no-changed-when annotations
- Delete unused/broken roles/better-shell-env (unreferenced, invalid YAML)
- Rename all hyphenated role directories to underscore form to satisfy
  ansible-lint's role-name rule, updating every playbook/meta reference

Remaining lint findings (var-naming, package-latest, risky-file-permissions,
no-handler) intentionally left for follow-up per user decision.

roles/pi_lirc/tasks/main.yml

@@ -0,0 +1,36 @@
+---
+- name: Install lirc
+  ansible.builtin.apt:
+    name: lirc
+- name: Install config file lirc_options.conf
+  ansible.builtin.copy:
+    src: lirc_options.conf
+    dest: /etc/lirc/lirc_options.conf
+- name: Install config file lircd.conf
+  ansible.builtin.copy:
+    src: lircd.conf
+    dest: /etc/lirc/lircd.conf
+- name: Install remote file
+  ansible.builtin.copy:
+    src: hauppauge.conf
+    dest: /etc/lirc/hauppauge.conf
+- name: Activate overlay in boot config
+  ansible.builtin.lineinfile:
+    path: /boot/firmware/config.txt
+    regexp: "^#?dtoverlay=gpio-ir"
+    line: "dtoverlay=gpio-ir,gpio_pin=17"
+  register: boot_overlay
+- name: Restart lircd
+  ansible.builtin.systemd:
+    name: lircd
+    state: started
+    enabled: "yes"
+    daemon_reload: "yes"
+- name: Reboot if boot overlay changed
+  ansible.builtin.reboot:
+  when: boot_overlay.changed
+- name: Add to sysdweb
+  ansible.builtin.include_role:
+    name: pi_sysdweb
+  vars:
+    sysdweb_name: lircd