feat(frontend): rename inj roles to sys-front-*, add sys-svc-cdn, cache-busting lookup

Introduce sys-svc-cdn (cdn_paths/cdn_urls/cdn_dirs) and ensure CDN directories + latest symlink.

Rename sys-srv-web-inj-* → sys-front-inj-*; update includes/templates; serve shared/per-app CSS & JS via CDN.

Add lookup_plugins/local_mtime_qs.py for mtime-based cache busting; split CSS into default.css/bootstrap.css + optional per-app style.css.

CSP: use style-src-elem; drop unsafe-inline for styles. Services: fix SYS_SERVICE_ALL_ENABLED bool and controlled flush.

BREAKING CHANGE: role names changed; replace includes and references accordingly.

Conversation: https://chatgpt.com/share/68b55494-9ec4-800f-b559-44707029141d

roles/sys-front-inj-logout/tasks/02_deploy.yml

@@ -0,0 +1,16 @@
+- name: Deploy logout.js
+  template:
+    src: logout.js.j2
+    dest: "{{ INJ_LOGOUT_JS_DESTINATION }}"
+    owner: "{{ NGINX.USER }}"
+    group: "{{ NGINX.USER }}"
+    mode: '0644'
+
+- name: Get stat for logout.js
+  stat:
+    path: "{{ INJ_LOGOUT_JS_DESTINATION }}"
+  register: INJ_LOGOUT_JS_STAT
+
+- name: Set INJ_LOGOUT_JS_VERSION
+  set_fact:
+    INJ_LOGOUT_JS_VERSION: "{{ INJ_LOGOUT_JS_STAT.stat.mtime }}"