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_standard_setup/tasks/main.yml

@@ -0,0 +1,135 @@
+---
+- name: Do apt update/upgrade
+  ansible.builtin.apt:
+    upgrade: "yes"
+    update_cache: "yes"
+    cache_valid_time: "7200"
+- name: Detect Raspi Model
+  ansible.builtin.slurp:
+    src: /sys/firmware/devicetree/base/model
+  register: raspberry_model
+- name: Show Raspi Model
+  ansible.builtin.debug:
+    msg: "{{ raspberry_model.content | b64decode }}"
+- name: Add authorized SSH key to root account
+  ansible.posix.authorized_key:
+    user: root
+    key: "{{ lookup('file', 'sshkey.pub') }}"
+    state: present
+- name: Activate root login with key
+  ansible.builtin.lineinfile:
+    path: /etc/ssh/sshd_config
+    regexp: "^#?PermitRootLogin"
+    line: "PermitRootLogin prohibit-password"
+  notify: Restart sshd
+- name: Deactive SSH accepting locale vars (leads to warnings)
+  ansible.builtin.lineinfile:
+    path: /etc/ssh/sshd_config
+    regexp: "^#?AcceptEnv LANG LC_*"
+    line: "#AcceptEnv LANG LC_*"
+  notify: Restart sshd
+- name: Get hostname
+  ansible.builtin.command: "raspi-config nonint get_hostname"
+  register: pi_hostname
+  changed_when: false
+- name: Change hostname  {{ new_hostname }}
+  ansible.builtin.command: "raspi-config nonint do_hostname {{ new_hostname }}"
+  when: new_hostname | bool and pi_hostname.stdout != new_hostname
+  register: set_hostname
+  changed_when: true
+  notify: Reboot
+- name: Get hostname
+  ansible.builtin.command: "raspi-config nonint get_hostname"
+  register: pi_hostname
+  changed_when: false
+- name: Set boot mode to CLI
+  ansible.builtin.command: "raspi-config nonint do_boot_behaviour B1"
+  changed_when: true
+# I2 Change Timezone
+- name: Change timezone
+  ansible.builtin.command: "raspi-config nonint do_change_timezone {{ timezone }}"
+  changed_when: true
+- name: Change locale
+  ansible.builtin.command: "raspi-config nonint do_change_locale en_US.UTF-8"
+  changed_when: true
+- name: Change password of default pi account
+  ansible.builtin.user:
+    name: pi
+    update_password: always
+    password: "{{ lookup('keepass', 'ansible://default_rpi_password') | password_hash('sha512') }}"
+- name: Install Packages (vim, git, basic python stuff)
+  ansible.builtin.apt:
+    name:
+      - vim
+      - git
+      - python3
+      - python3-pip
+      - python3-wheel
+      - telnet
+    cache_valid_time: 7200
+    state: present
+- name: Copy vim config
+  ansible.builtin.copy:
+    src: vimrc
+    dest: /root/.vimrc
+- name: Copy git config
+  ansible.builtin.copy:
+    src: gitconfig
+    dest: /root/.gitconfig
+# Wifi
+- name: Get WiFi country
+  ansible.builtin.command: "raspi-config nonint get_wifi_country"
+  register: wifi_country
+  changed_when: false
+  ignore_errors: true # to avoid error when WiFi is not present
+- name: Change WiFi country
+  ansible.builtin.command: "raspi-config nonint do_wifi_country {{ wifi_country }}"
+  when: configure_wifi
+  changed_when: true
+- name: Set WiFi credentials
+  ansible.builtin.command: "raspi-config nonint do_wifi_ssid_passphrase {{ wifi_ssid }} {{ lookup('keepass', 'bauer_wifi') }}"
+  when: configure_wifi
+  changed_when: true
+- name: Install watchdog
+  ansible.builtin.apt:
+    name: watchdog
+    cache_valid_time: "7200"
+    state: present
+  when: not wifi_ssid is defined
+- name: Configure watchdog
+  ansible.builtin.blockinfile:
+    path: /etc/watchdog.conf
+    block: |
+      interface = wlan0
+      retry-timeout = 90
+      ping = {{ router_ip }}
+      interval = 15
+  when: configure_wifi
+- name: Start watchdog
+  ansible.builtin.systemd: # state=restarted not working, also not manually
+    name: watchdog
+    state: started
+    enabled: "yes"
+    daemon_reload: "yes"
+  when: configure_wifi
+# Message of the day
+- name: Set Message of the day
+  ansible.builtin.copy:
+    src: motd/{{ pi_hostname.stdout }}
+    dest: /etc/motd
+# LED off script
+- name: Copy led off script
+  ansible.builtin.copy:
+    src: raspi-leds-off.sh
+    dest: /usr/sbin/raspi-leds-off.sh
+    mode: "u+rwx"
+- name: Copy led off service
+  ansible.builtin.copy:
+    src: raspi-leds-off.service
+    dest: /lib/systemd/system/
+- name: Activate led off servic
+  ansible.builtin.systemd:
+    name: raspi-leds-off
+    state: restarted
+    enabled: "yes"
+    daemon_reload: "yes"