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/02_debug.yml

@@ -0,0 +1,45 @@
+- name: "Toggle Joomla debug flags safely (configuration.php)"
+  command:
+    argv:
+      - docker
+      - exec
+      - -e
+      - "J_MODE_DEBUG={{ MODE_DEBUG | default(false) | bool | ternary('1','0') }}"
+      - -e
+      - "J_ERR_LEVEL={{ MODE_DEBUG | default(false) | bool | ternary('maximum','default') }}"
+      - "{{ JOOMLA_CONTAINER }}"
+      - php
+      - -r
+      - |
+        $f = '{{ JOOMLA_CONFIG_FILE }}';
+        if (!file_exists($f)) { fwrite(STDERR, "configuration.php missing\n"); exit(1); }
+        $c = file_get_contents($f);
+        $changed = 0;
+
+        $debug = getenv('J_MODE_DEBUG') === '1';
+        $err   = getenv('J_ERR_LEVEL') ?: 'default';
+
+        // Clean up previously broken lines
+        $c = preg_replace('/^\s*public\s+1\s*=.*?;$/m', '', $c, -1, $nBad1); $changed += $nBad1;
+        $c = preg_replace('/^\s*public\s*=\s*maximum;$/m', '', $c, -1, $nBad2); $changed += $nBad2;
+
+        // Ensure: public $debug = true|false;
+        $lineDebug = "public \$debug = " . ($debug ? 'true' : 'false') . ";";
+        if (preg_match('/public\s*\$debug\s*=\s*[^;]*;/', $c)) {
+          $c = preg_replace('/public\s*\$debug\s*=\s*[^;]*;/', $lineDebug, $c, 1, $n); $changed += $n;
+        } else {
+          $c = preg_replace("/\n\}\s*$/", "\n\t".$lineDebug."\n}\n", $c, 1, $n); $changed += $n;
+        }
+
+        // Ensure: public $error_reporting = 'maximum'|'default';
+        $lineErr = "public \$error_reporting = '" . str_replace("'", "\\'", $err) . "';";
+        if (preg_match('/public\s*\$error_reporting\s*=\s*[^;]*;/', $c)) {
+          $c = preg_replace('/public\s*\$error_reporting\s*=\s*[^;]*;/', $lineErr, $c, 1, $n); $changed += $n;
+        } else {
+          $c = preg_replace("/\n\}\s*$/", "\n\t".$lineErr."\n}\n", $c, 1, $n); $changed += $n;
+        }
+
+        if ($changed) { file_put_contents($f, $c); echo "changed"; } else { echo "ok"; }
+  register: j_cfg_debug
+  changed_when: (j_cfg_debug.stdout | trim) == "changed"
+  failed_when: j_cfg_debug.rc != 0