v1.5.1

• Improved: Rewrote GitHub auto-updater to match reference template — added plugin_info with local README.md parsing (Description, Installation, FAQ, Changelog tabs), Parsedown-based Markdown→HTML conversion, tables_to_divs for wp_kses compatibility, CSS/JS injection via admin_head, REQUIRES_GF sidebar line, and upgrader_source_selection folder rename with copy+delete fallback
• New: "View details" thickbox link in the plugins list row meta opens the standard WordPress plugin-information modal
• New: Added Parsedown.php for reliable Markdown rendering in the plugin details popup
• Fixed: check_for_update now returns all required keys (id, slug, plugin, new_version) to prevent Undefined property notices on the update screen