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>

PLAN.md

@@ -17,24 +17,24 @@ This document outlines the implementation plan for the WP BnB Management plugin.
 - [x] Basic CSS and JS assets
 - [x] Documentation (README, PLAN, CLAUDE)
 
-### v0.1.0 - Core Data Structures
+### v0.1.0 - Core Data Structures (Current)
 
-- [ ] Custom Post Type: Buildings
+- [x] Custom Post Type: Buildings
   - Meta fields: address, contact, description, images
   - Admin columns and filtering
-  - Gutenberg block for display
+  - Gutenberg block for display (planned for Phase 6)
 
-- [ ] Custom Post Type: Rooms
+- [x] Custom Post Type: Rooms
   - Meta fields: building reference, capacity, amenities, images
   - Relationship to Buildings (parent)
   - Admin columns with building filter
-  - Gutenberg block for display
+  - Gutenberg block for display (planned for Phase 6)
 
-- [ ] Custom Taxonomy: Room Types
+- [x] Custom Taxonomy: Room Types
   - Standard, Suite, Family, Accessible, etc.
   - Hierarchical structure
 
-- [ ] Custom Taxonomy: Amenities
+- [x] Custom Taxonomy: Amenities
   - WiFi, Parking, Breakfast, etc.
   - Non-hierarchical (tags)
 
@@ -285,15 +285,15 @@ The plugin will provide extensive hooks for customization:
 
 ## Version Milestones
 
-| Version | Focus | Target |
-|---------|-------|--------|
-| 0.0.1 | Initial setup | Complete |
-| 0.1.0 | Data structures | TBD |
-| 0.2.0 | Pricing | TBD |
-| 0.3.0 | Bookings | TBD |
-| 0.4.0 | Guests | TBD |
-| 0.5.0 | Services | TBD |
-| 0.6.0 | Frontend | TBD |
-| 0.7.0 | CF7 Integration | TBD |
-| 0.8.0 | Dashboard | TBD |
-| 1.0.0 | Stable Release | TBD |
+| Version | Focus           | Target   |
+| ------- | --------------- | -------- |
+| 0.0.1   | Initial setup   | Complete |
+| 0.1.0   | Data structures | Complete |
+| 0.2.0   | Pricing         | TBD      |
+| 0.3.0   | Bookings        | TBD      |
+| 0.4.0   | Guests          | TBD      |
+| 0.5.0   | Services        | TBD      |
+| 0.6.0   | Frontend        | TBD      |
+| 0.7.0   | CF7 Integration | TBD      |
+| 0.8.0   | Dashboard       | TBD      |
+| 1.0.0   | Stable Release  | TBD      |