Remove non-functional Joomla LDAP integration

- Disabled LDAP feature flag (set to false by default, with comment)
- Removed ldapautocreate plugin (PHP + XML)
- Deleted LDAP helper tasks (01_ldap_files.yml, 05_ldap.yml, 07_diagnose.yml)
- Deleted LDAP CLI helper scripts (cli.php, diagnose.php, plugins.php, auth-trace.php)
- Removed LDAP configuration variables from vars/main.yml
- Removed LDAP environment variables from env.j2
- Removed LDAP-specific mounts from docker-compose.yml.j2
- Dropped php-ldap installation from Dockerfile
- Renamed task files for consistent numbering (02->01_install, 03->02_debug, 04->03_patch, 06->04_assert)

Reason: LDAP integration was removed because it was not functional.

Conversation: https://chatgpt.com/share/68b09373-7aa8-800f-8f2c-11e27123bad1

roles/web-app-joomla/tasks/03_patch.yml

@@ -0,0 +1,52 @@
+- name: "Ensure configuration.php DB settings match inventory"
+  command:
+    argv:
+      - docker
+      - exec
+      - -e
+      - J_DBTYPE={{ JOOMLA_DB_CONNECTOR }}
+      - -e
+      - J_DBHOST={{ database_host }}:{{ database_port }}
+      - -e
+      - J_DBUSER={{ database_username }}
+      - -e
+      - J_DBPASS={{ database_password }}
+      - -e
+      - J_DBNAME={{ database_name }}
+      - "{{ JOOMLA_CONTAINER }}"
+      - php
+      - -r
+      - |
+        $f = '{{ JOOMLA_CONFIG_FILE }}';
+        if (!file_exists($f)) { exit(0); }
+        $c = file_get_contents($f);
+        $changed = 0;
+
+        $map = [
+          'dbtype'   => getenv('J_DBTYPE'),
+          'host'     => getenv('J_DBHOST'),
+          'user'     => getenv('J_DBUSER'),
+          'password' => getenv('J_DBPASS'),
+          'db'       => getenv('J_DBNAME'),
+        ];
+
+        foreach ($map as $k => $v) {
+          // Escape single quotes for safe embedding into the PHP source string
+          $vEsc = str_replace("'", "\\'", $v);
+
+          // Match current value in config: public $key = '...';
+          if (preg_match("/public \\$".$k."\\s*=\\s*'([^']*)';/", $c, $m) && $m[1] !== $v) {
+            $c = preg_replace(
+              "/public \\$".$k."\\s*=\\s*'[^']*';/",
+              "public $".$k." = '".$vEsc."';",
+              $c
+            );
+            $changed = 1;
+          }
+        }
+
+        if ($changed) { file_put_contents($f, $c); echo "changed"; } else { echo "ok"; }
+  register: cfg_patch
+  changed_when: cfg_patch.stdout == "changed"
+  failed_when: cfg_patch.rc != 0
+  when: joomla_installed.rc == 0