fix: cost column SQL error + Peptide Topics column squish (v0.13.5)

Two bugs in class-post-list-columns.php:

1. Cost always showed $0.00: a PHP '// phpcs:ignore' comment was
   placed inside the SQL string literal, causing MariaDB syntax error
   on every render_cost_cell() query. Moved comment to the line above
   wpdb->prepare() where it belongs.

2. Peptide Topics column header compressed to near-zero width by the
   three fixed-width PRAB columns (Writing Model + Image Model + Cost =
   255px). Added min-width: 80px to .column-taxonomy-peptide_topic so
   the header renders horizontally.

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:           0.13.4
+ * Version:           0.13.5
  * 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', '0.13.4' );
+define( 'PRAUTOBLOGGER_VERSION', '0.13.5' );
 define( 'PRAUTOBLOGGER_DB_VERSION', '1.1.0' );
 define( 'PRAUTOBLOGGER_PLUGIN_FILE', __FILE__ );
 define( 'PRAUTOBLOGGER_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );