fix: add services/opik/ to autoloader — v0.12.3

class-autoloader.php listed services/ as a scan directory but not
services/opik/, where all four Opik classes live. Composer's classmap
covers includes/ recursively so PHPUnit passed; the WP runtime autoloader
fatals on first Opik class reference in production.

Root cause: the subdirectory was not added to the explicit $directories
array when the opik/ subdirectory was created in Wave 1.

Adds services/opik/ to the scan list. Bumps to v0.12.3.

prautoblogger.php

@@ -9,7 +9,7 @@
  * Plugin Name:       PRAutoBlogger
  * Plugin URI:        https://peptiderepo.com/prautoblogger
  * Description:       Monitors social media for trending topics, generates SEO-friendly blog posts using AI, and publishes them on a daily schedule with full cost tracking and self-improvement metrics.
- * Version:           0.12.2
+ * Version:           0.12.3
  * Requires at least: 6.0
  * Requires PHP:      7.4
  * Author:            PeptideRepo
@@ -35,7 +35,7 @@ if ( ! defined( 'ABSPATH' ) ) {
 | Defined here so every file in the plugin can reference paths, versions,
 | and limits without magic strings.
 */
-define( 'PRAUTOBLOGGER_VERSION', '0.12.2' );
+define( 'PRAUTOBLOGGER_VERSION', '0.12.3' );
 define( 'PRAUTOBLOGGER_DB_VERSION', '1.1.0' );
 define( 'PRAUTOBLOGGER_PLUGIN_FILE', __FILE__ );
 define( 'PRAUTOBLOGGER_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );