fix(ci): phpcbf auto-format + add missing bootstrap requires for tests

212 PHPCS formatting errors auto-fixed by phpcbf across 18 files.
All remaining issues are warnings (exit 2), not errors — CI treats
exit 2 as success via the same pattern as peptide-news-plugin.

Also adds class-psa-ai-content.php and class-psa-directory-api.php to
tests/bootstrap.php require list — both files exist in includes/ but
were missing from bootstrap, causing 5 PHPUnit "Class not found"
failures in AIGeneratorTest and DirectoryTest.

includes/class-psa-template.php

@@ -210,7 +210,7 @@ class PSA_Template {
 				'class' => 'psa-badge-manual',
 			),
 		);
-		$badge = $badges[ $source ] ?? $badges['ai-generated'];
+		$badge  = $badges[ $source ] ?? $badges['ai-generated'];
 
 		$html  = '<div class="psa-source-badge ' . esc_attr( $badge['class'] ) . '">';
 		$html .= esc_html( $badge['label'] );