Implements 6-tier role hierarchy:
- ADMIN (100): Full system access
- OFFICE_MANAGER (50): Admin panel without user management
- MANAGER (40): Full company control + user management
- EMPLOYEE (30): Edit company data (with delegated permissions)
- MEMBER (20): Full content access (forum, contacts, chat)
- UNAFFILIATED (10): Public profiles only
Features:
- SystemRole and CompanyRole enums in database.py
- UserCompanyPermissions model for delegation
- New decorators: @role_required(), @company_permission()
- Auto-detection of MANAGER role from KRS data
- Backward compatible with is_admin flag
Migration: 035_add_role_system.sql
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
