Add additional services system (v0.5.0)

- Service CPT with pricing types: Included, Per Booking, Per Night
- ServiceCategory taxonomy with default categories
- Booking-services integration with service selector
- Real-time price calculation based on nights and quantity
- Services total and grand total display in booking admin

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

CHANGELOG.md

@@ -5,6 +5,48 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.5.0] - 2026-01-31
+
+### Added
+
+- Additional Services System:
+  - Custom Post Type: Services (`bnb_service`)
+  - Service pricing types: Included (free), Per Booking (one-time), Per Night
+  - Service configuration: price, status, sort order, max quantity
+  - Custom admin columns with pricing type icons and status badges
+  - Filters by status and pricing type
+  - Service data helper methods for pricing calculations
+- Service Categories Taxonomy (`bnb_service_category`)
+  - Non-hierarchical (tag-like) structure
+  - Icon selection per category
+  - Sort order for custom ordering
+  - Default categories: Food & Dining, Transportation, Wellness & Spa, Activities, Housekeeping
+- Booking-Services Integration:
+  - Services meta box in Booking edit screen
+  - Checkbox-based service selection
+  - Quantity input for services with max_quantity > 1
+  - Real-time price calculation per service based on nights
+  - Services total display
+  - Price breakdown shows services cost
+  - Grand total (room + services) in admin list and pricing meta box
+- Admin UI Enhancements:
+  - Service selector with pricing type indicators
+  - Included services badge
+  - Per-night price suffix display
+  - Service line totals with quantity support
+  - Services total summary in booking
+  - CSS styles for all service-related components
+  - JavaScript for dynamic service pricing calculations
+
+### Changed
+
+- Plugin.php updated to register Service CPT and ServiceCategory taxonomy
+- Admin assets enqueued for Service post type screens
+- Booking admin list shows total price including services
+- Booking pricing meta box displays services breakdown and grand total
+- Admin JavaScript extended with service pricing and selection logic
+- Admin CSS includes comprehensive service styling
+
 ## [0.4.0] - 2026-01-31
 
 ### Added
@@ -248,6 +290,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Input sanitization and output escaping
 - Server secret masking in license settings
 
+[0.5.0]: https://src.bundespruefstelle.ch/magdev/wp-bnb/releases/tag/v0.5.0
 [0.4.0]: https://src.bundespruefstelle.ch/magdev/wp-bnb/releases/tag/v0.4.0
 [0.3.0]: https://src.bundespruefstelle.ch/magdev/wp-bnb/releases/tag/v0.3.0
 [0.2.0]: https://src.bundespruefstelle.ch/magdev/wp-bnb/releases/tag/v0.2.0