feat(web-app-joomla): reliable first-run install, safe debug toggler, DB patching, LDAP scaffolding

Why
- Fix flaky first-run installs and make config edits idempotent.
- Prepare LDAP support and allow optional inline CSP for UI.
- Improve observability and guard against broken configuration.php.

What
- config/main.yml: enable features.ldap; add CSP flags (allow inline style/script elem); minor spacing.
- tasks/: split into 01_install (wait for core, absolute CLI path), 02_debug (toggle $debug/$error_reporting safely), 03_patch (patch DB creds in configuration.php), 04_ldap (configure plugin via helper), 05_assert (optional php -l).
- templates/Dockerfile.j2: conditionally install/compile php-ldap (fallback to docker-php-ext-install with libsasl2-dev).
- templates/cli-ldap.php.j2: idempotently enable & configure Authentication - LDAP from env.
- templates/docker-compose.yml.j2: build custom image when LDAP is enabled; mount cli-ldap.php; pull_policy: never.
- templates/env.j2: add site/admin vars, MariaDB connector/env, full LDAP env.
- vars/main.yml: default to MariaDB (mysqli), add JOOMLA_* vars incl. JOOMLA_CONFIG_FILE.

Notes
- LDAP path implemented but NOT yet tested end-to-end.
- Ref: https://chatgpt.com/share/68b068a8-2aa4-800f-8cd1-56383561a9a8.

roles/web-app-joomla/templates/env.j2

@@ -1,4 +1,34 @@
+JOOMLA_SITE_NAME={{ JOOMLA_SITE_NAME }}
+JOOMLA_ADMIN_USER={{ JOOMLA_USER }}
+JOOMLA_ADMIN_USERNAME={{ JOOMLA_USER_NAME }}
+JOOMLA_ADMIN_PASSWORD={{ JOOMLA_USER_PASSWORD }}
+JOOMLA_ADMIN_EMAIL={{ JOOMLA_USER_EMAIL }}
+
+{% if database_type == 'mariadb' %}
+# Database
 JOOMLA_DB_HOST="{{ database_host }}:{{ database_port }}"
 JOOMLA_DB_USER="{{ database_username }}"
 JOOMLA_DB_PASSWORD="{{ database_password }}"
-JOOMLA_DB_NAME="{{ database_name }}"
+JOOMLA_DB_NAME="{{ database_name }}"
+JOOMLA_DB_TYPE="{{ JOOMLA_DB_CONNECTOR }}"
+{% endif %}
+
+{% if JOOMLA_LDAP_ENABLED %}
+# LDAP
+JOOMLA_LDAP_HOST="{{ JOOMLA_LDAP_HOST }}"
+JOOMLA_LDAP_PORT="{{ JOOMLA_LDAP_PORT }}"
+JOOMLA_LDAP_BASE_DN="{{ JOOMLA_LDAP_BASE_DN }}"
+JOOMLA_LDAP_USER_TREE_DN="{{ JOOMLA_LDAP_USER_TREE_DN }}"
+JOOMLA_LDAP_GROUP_TREE_DN="{{ JOOMLA_LDAP_GROUP_TREE_DN }}"
+JOOMLA_LDAP_UID_ATTR="{{ JOOMLA_LDAP_UID_ATTR }}"
+JOOMLA_LDAP_EMAIL_ATTR="{{ JOOMLA_LDAP_EMAIL_ATTR }}"
+JOOMLA_LDAP_NAME_ATTR="{{ JOOMLA_LDAP_NAME_ATTR }}"
+JOOMLA_LDAP_BIND_DN="{{ JOOMLA_LDAP_BIND_DN }}"
+JOOMLA_LDAP_BIND_PASSWORD="{{ JOOMLA_LDAP_BIND_PASSWORD }}"
+JOOMLA_LDAP_USE_STARTTLS="{{ JOOMLA_LDAP_USE_STARTTLS | ternary('1','') }}"
+JOOMLA_LDAP_IGNORE_CERT="{{ JOOMLA_LDAP_IGNORE_CERT | ternary('1','') }}"
+JOOMLA_LDAP_MAP_FULLNAME="{{ JOOMLA_LDAP_MAP_FULLNAME | ternary('1','') }}"
+JOOMLA_LDAP_MAP_EMAIL="{{ JOOMLA_LDAP_MAP_EMAIL | ternary('1','') }}"
+JOOMLA_LDAP_AUTH_METHOD="{{ JOOMLA_LDAP_AUTH_METHOD }}"
+JOOMLA_LDAP_USER_SEARCH_STRING="{{ JOOMLA_LDAP_USER_SEARCH_STRING }}"
+{% endif %}