Add CF7 tag generator buttons for admin form editor (v0.7.1)

- Register tag generators via wpcf7_admin_init hook
- Add BnB Building select tag generator with first_as_label option
- Add BnB Room select tag generator with building_field and include_price options
- Add BnB Check-in date tag generator with min/max advance options
- Add BnB Check-out date tag generator with checkin_field and min/max nights options
- Add BnB Guests count tag generator with room_field and min/max/default options
- All generators support id and class attribute configuration
- Remove bug from Known Bugs section in CLAUDE.md

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

wp-bnb.php

@@ -3,7 +3,7 @@
  * Plugin Name: WP BnB Management
  * Plugin URI: https://src.bundespruefstelle.ch/magdev/wp-bnb
  * Description: A comprehensive Bed & Breakfast management system for WordPress. Manage buildings, rooms, bookings, and guests.
- * Version: 0.7.0
+ * Version: 0.7.1
  * Requires at least: 6.0
  * Requires PHP: 8.3
  * Author: Marco Graetsch
@@ -24,7 +24,7 @@ if ( ! defined( 'ABSPATH' ) ) {
 }
 
 // Plugin version constant - MUST match Version in header above.
-define( 'WP_BNB_VERSION', '0.7.0' );
+define( 'WP_BNB_VERSION', '0.7.1' );
 
 // Plugin path constants.
 define( 'WP_BNB_PATH', plugin_dir_path( __FILE__ ) );