fix: rebalance Posts list column widths (v0.13.7)

35% title + 255px fixed PRAB cols left ~50px per auto column.
Replace with a balanced budget across all columns so Author,
Categories, Tags, and Date all get enough room to render horizontally:
  title 22%, author 6%, categories 7%, tags 9%, date 8%,
  writing_model/image_model 85px each, cost 50px, peptide_topics 75px

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:           0.13.6
+ * Version:           0.13.7
  * 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', '0.13.6' );
+define( 'PRAUTOBLOGGER_VERSION', '0.13.7' );
 define( 'PRAUTOBLOGGER_DB_VERSION', '1.1.0' );
 define( 'PRAUTOBLOGGER_PLUGIN_FILE', __FILE__ );
 define( 'PRAUTOBLOGGER_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );