Update CLAUDE.md with v0.6.0 session history and directory structure

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

CLAUDE.md

@@ -1,4 +1,4 @@
-# WordPress BnB Management
+# WordPress BnB Manager
 
 **Author:** Marco Graetsch
 **Author URL:** <https://src.bundespruefstelle.ch/magdev>
@@ -234,9 +234,18 @@ wp-bnb/
 │   ├── Admin/              # Admin pages
 │   │   ├── Calendar.php    # Availability calendar page
 │   │   └── Seasons.php     # Seasons management page
+│   ├── Blocks/             # Gutenberg blocks
+│   │   └── BlockRegistrar.php # Block registration and rendering
 │   ├── Booking/            # Booking system
 │   │   ├── Availability.php # Availability checking
 │   │   └── EmailNotifier.php # Email notifications
+│   ├── Frontend/           # Frontend components
+│   │   ├── Search.php      # Room search and AJAX handlers
+│   │   ├── Shortcodes.php  # All shortcode handlers
+│   │   └── Widgets/        # WordPress widgets
+│   │       ├── AvailabilityCalendar.php
+│   │       ├── BuildingRooms.php
+│   │       └── SimilarRooms.php
 │   ├── License/
 │   │   └── Manager.php     # License management
 │   ├── PostTypes/          # Custom post types
@@ -256,10 +265,12 @@ wp-bnb/
 ├── assets/
 │   ├── css/
 │   │   ├── admin.css       # Admin styles
-│   │   └── frontend.css    # Frontend styles
+│   │   ├── blocks-editor.css # Gutenberg editor styles
+│   │   └── frontend.css    # Frontend styles (~1250 lines)
 │   └── js/
 │       ├── admin.js        # Admin scripts
-│       └── frontend.js     # Frontend scripts
+│       ├── blocks-editor.js # Gutenberg editor scripts
+│       └── frontend.js     # Frontend scripts (~825 lines)
 ├── templates/              # Twig templates (future)
 ├── languages/              # Translation files (future)
 └── releases/               # Release packages (git-ignored)
@@ -560,3 +571,85 @@ Admin features always work; frontend requires valid license.
 - Same namespace classes can reference each other directly without use statements
 - Services meta box renders before pricing meta box so services total is available
 - Grand total calculation happens both on save (server-side) and on change (client-side JS)
+
+### 2026-02-02 - Version 0.6.0 (Frontend Features)
+
+**Completed:**
+
+- Created `src/Frontend/Search.php` class
+  - Room search with multiple filters: availability, capacity, room type, amenities, price range, building
+  - AJAX endpoints: `wp_bnb_search_rooms`, `wp_bnb_get_availability`, `wp_bnb_get_calendar`, `wp_bnb_calculate_price`
+  - Pagination support with configurable per_page
+  - Room data formatting for JSON responses with thumbnails, pricing, amenities
+  - Price range filtering using Calculator integration
+  - Availability filtering using Availability class
+- Created `src/Frontend/Shortcodes.php` class
+  - `[bnb_buildings]` - Buildings list/grid with layout, columns, limit, orderby options
+  - `[bnb_rooms]` - Rooms list/grid with building, room_type, amenities filters
+  - `[bnb_room_search]` - Interactive search form with results container
+  - `[bnb_building id="X"]` - Single building display with rooms
+  - `[bnb_room id="X"]` - Single room display with availability form
+  - Grid system with 1-4 column support
+  - Sorting options: title, date, price, capacity
+- Created `src/Frontend/Widgets/` directory with three widgets
+  - `SimilarRooms.php` - Shows rooms from same building/room type
+  - `BuildingRooms.php` - Lists all rooms in a building
+  - `AvailabilityCalendar.php` - Mini calendar with booking status
+  - All widgets extend `WP_Widget` with form/update/widget methods
+  - Auto-detection of current building/room from page context
+- Created `src/Blocks/BlockRegistrar.php` class
+  - Five Gutenberg blocks: Building, Room, Room Search, Buildings List, Rooms List
+  - Server-side rendering using shortcode system
+  - Block editor assets (CSS/JS) enqueuing
+  - Block data localization with buildings, rooms, room types, amenities
+  - `render_callback` functions for each block type
+- Created `assets/js/blocks-editor.js`
+  - Block registration using `wp.blocks.registerBlockType`
+  - InspectorControls for sidebar settings panels
+  - ServerSideRender for live preview in editor
+  - Attribute definitions matching shortcode parameters
+- Created `assets/css/blocks-editor.css`
+  - Minimal editor styling for block placeholders
+  - Preview container styling
+- Updated `assets/css/frontend.css` (~1250 lines)
+  - CSS custom properties for theming (colors, spacing, border-radius)
+  - Building and room card components
+  - Search form with field groups
+  - Results grid with responsive columns
+  - Calendar widget with availability states (available, booked, past, today)
+  - Legend styling
+  - Responsive breakpoints: 480px, 768px, 1024px
+- Updated `assets/js/frontend.js` (~825 lines)
+  - `WpBnb` namespace with utility methods (ajax, formatDate, parseDate, debounce)
+  - `SearchForm` class: form submission, date validation, results rendering, load more
+  - `CalendarWidget` class: month navigation, AJAX calendar loading
+  - `AvailabilityForm` class: availability checking on single room pages
+  - `PriceCalculator` class: real-time price calculation with breakdown
+  - XSS-safe DOM construction using textContent instead of innerHTML
+- Updated `src/Plugin.php`
+  - Added use statements for new frontend classes
+  - `init_frontend()` initializes Search, Shortcodes, BlockRegistrar
+  - `register_widgets()` method for widget registration
+  - `wp_localize_script()` adds AJAX URL, nonce, i18n strings to frontend
+- Updated version to 0.6.0 in both plugin header and constant
+- Updated CHANGELOG.md with comprehensive v0.6.0 release notes
+- Updated PLAN.md to mark Phase 6 complete
+
+**Learnings:**
+
+- Server-side rendered Gutenberg blocks avoid complex build processes and ensure PHP/JS output consistency
+- Shortcode system works well as render backend for blocks via `render_callback`
+- Widget auto-detection from page context (`is_singular()`, `get_the_ID()`) reduces configuration
+- CSS custom properties enable easy theming without modifying core styles
+- AJAX nonce verification requires `wp_ajax_nopriv_` for non-logged-in users in frontend search
+- Calendar data from `Availability::get_calendar_data()` provides consistent format for PHP and JS rendering
+- XSS prevention in JS: use `textContent` for user data, `createElement` for structure
+- Frontend components require license check (`LicenseManager::is_license_valid()`) before initialization
+- Block editor requires separate script handle from frontend to avoid conflicts
+
+**Released:**
+
+- Committed: `864b8b2` on dev branch
+- Merged to main (fast-forward)
+- Tagged: `v0.6.0`
+- Pushed to origin: dev, main, v0.6.0