Add core data structures for Buildings and Rooms (v0.1.0)

Phase 1 implementation includes:
- Custom Post Type: Buildings with address, contact, and details meta
- Custom Post Type: Rooms with building relationship and gallery
- Custom Taxonomy: Room Types (hierarchical)
- Custom Taxonomy: Amenities (non-hierarchical with icons)
- Admin columns, filters, and status badges
- Gallery meta box with media library integration

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

CHANGELOG.md

@@ -5,6 +5,51 @@ 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).
 
+## [0.1.0] - 2026-01-31
+
+### Added
+
+- Custom Post Type: Buildings (`bnb_building`)
+  - Address fields (street, city, state, ZIP, country)
+  - Contact information (phone, email, website)
+  - Building details (total rooms, floors, year built)
+  - Check-in/check-out time configuration
+  - Featured image support
+  - Custom admin columns (city, country, room count)
+  - Sortable columns
+- Custom Post Type: Rooms (`bnb_room`)
+  - Building relationship (parent building selection)
+  - Room details (number, floor, size, capacity)
+  - Guest capacity (total, max adults, max children)
+  - Beds description and bathroom count
+  - Room status (available, occupied, maintenance, blocked)
+  - Image gallery with drag-and-drop sorting
+  - Featured image support
+  - Custom admin columns (building, room number, type, capacity, status)
+  - Building filter dropdown in admin list
+- Custom Taxonomy: Room Types (`bnb_room_type`)
+  - Hierarchical (category-like) structure
+  - Default types: Standard, Superior, Suite, Family, Accessible, Apartment
+  - Subtypes: Single, Double, Twin, Junior Suite, Executive Suite
+  - Base capacity meta field
+  - Sort order meta field
+- Custom Taxonomy: Amenities (`bnb_amenity`)
+  - Non-hierarchical (tag-like) structure
+  - Default amenities: WiFi, Parking, Breakfast, TV, A/C, Pet Friendly, etc.
+  - Dashicon selection for visual display
+  - Custom column showing icon
+- Admin enhancements
+  - Gallery meta box with media library integration
+  - Status badges with color coding
+  - Custom title placeholders for each post type
+  - Post type edit screens with proper asset loading
+
+### Changed
+
+- Updated admin assets to handle post type edit screens
+- Enhanced asset enqueuing to include jQuery UI Sortable for galleries
+- Improved localization with additional i18n strings
+
 ## [0.0.1] - 2026-01-31
 
 ### Added
@@ -35,4 +80,5 @@ 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
 
+[0.1.0]: https://src.bundespruefstelle.ch/magdev/wp-bnb/releases/tag/v0.1.0
 [0.0.1]: https://src.bundespruefstelle.ch/magdev/wp-bnb/releases/tag/v0.0.1