Departments now belong to a Company, not a Project.
- New migration: recreates settings_departments with company_id (migrates existing data)
- Department model: company_id FK, company() relation
- Company model: departments() hasMany relation
- ProjectSetting model: removes departments() relation
- Controller: dept methods now take Company instead of ProjectSetting
- Routes: department CRUD moves to companies/{company}/departments
- View: departments section appears on each company card (purple theme);
project body is now locations-only (single column)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
