- Created Umzugsliste_Furniture_Data class with singleton pattern
- Extracted all 118 furniture items from 7 rooms with exact cbm values
- Preserved exact item names and order from legacy liste.php
- Room structure: wohnzimmer (32), schlafzimmer (15), arbeitszimmer (11), bad (3), kueche_esszimmer (18), kinderzimmer (18), keller (21)
- All items have name, cbm (float), and montage (boolean) properties
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- CPT init hook was being added from within parent init hook
- Changed to call register_post_type() directly from main init
- Removed redundant hook from CPT constructor
- Fixes CPT not registering on plugin activation
- Created Umzugsliste_Admin_Menu class with singleton pattern
- Top-level menu 'Umzugsliste' with dashicons-list-view icon
- Position 25 (below Comments, above Appearance)
- Capability: edit_posts (editors and above)
- Submenu 'Einträge' links to CPT list view
- Submenu 'Einstellungen' shows placeholder (Phase 3)
- Removed duplicate top-level menu item
- Created Umzugsliste_CPT class with singleton pattern
- Registered umzugsliste_entry post type
- German labels (Einträge, Eintrag)
- Settings: public=false, show_ui=true, show_in_menu=false
- Supports title field only (custom fields in Phase 6)
- Registered on init hook
