Reusable Block and Synced Pattern Count

Adds a Synced Patterns entry to the admin Posts menu (formerly called "Reusable Blocks" before WordPress 6.3), and shows a "Posts" column on the listing page counting how many posts each pattern appears in. Click the count to jump straight to a filtered posts list. Only counts posts that contain the pattern — not the number of times the pattern appears within a single post. Note: WordPress renamed "Reusable blocks" to "Synced patterns" in version 6.3. This plugin adapts its menu label to match whatever your version of WordPress calls them.

1.1

• Updated menu label to follow WordPress core naming: "Synced Patterns" on WP 6.3+, "Reusable Blocks" on older installs.
• Added text domain (reusable-block-count) to all translatable strings.
• Fixed double URL-encoding of the post search query.
• Fixed PHPDoc formatting throughout.
• Bootstrap on plugins_loaded rather than at file scope.

1.0

• Initial Release.