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_dhtsensor/tasks/main.yml

@@ -0,0 +1,46 @@
+---
+# Use the deprecated version here instead, not the new circuitpython adafruit-circuitpython-dht version
+# the new version needs a lot of CPU time and doesn't work correctly on old raspi 1
+# a copy of the deprecated repo is downloaded as zip (if it goes away)
+
+- name: Uninstall libgpiod2 (circuitpython) if present
+  ansible.builtin.apt:
+    name: libgpiod2
+    cache_valid_time: "7200"
+    state: absent
+- name: Pip uninstall adafruit-circuitpython-dht
+  ansible.builtin.pip:
+    name: adafruit-circuitpython-dht
+    executable: pip3
+    state: absent
+    extra_args: "--break-system-packages"
+- name: Pip install adafruit-dht
+  ansible.builtin.pip:
+    name: adafruit-dht
+    executable: pip3
+    extra_args: "--break-system-packages"
+- name: Install script config
+  ansible.builtin.template:
+    src: dht22_sensing.json
+    dest: /etc/dht22_sensing.json
+- name: Install script
+  ansible.builtin.copy:
+    src: dht22_sensing.py
+    dest: /usr/bin/dht22_sensing
+    owner: root
+    mode: u+rwx
+- name: Install systemd service file
+  ansible.builtin.copy:
+    src: dht22_sensing.service
+    dest: /etc/systemd/system/
+- name: Add script to autostart and start now
+  ansible.builtin.systemd:
+    name: dht22_sensing
+    state: restarted
+    enabled: "yes"
+    daemon_reload: "yes"
+- name: Add to sysdweb
+  ansible.builtin.include_role:
+    name: pi_sysdweb
+  vars:
+    sysdweb_name: dht22_sensing