Feature/api migration and personal mode

[Maphikza]

Summary

This PR implements a complete NPUB management system with full CRUD functionality for the allowed users feature. It fixes critical issues
with form integration, API field mapping, and adds comprehensive edit capabilities.

Key Features

• Complete NPUB Management: Add, view, edit, and delete users with tier and permission controls
• Smart Edit Functionality: Edit user tiers and permissions with intelligent backend synchronization
• Improved Form Integration: Fixed Ant Design form switch components for proper value handling
• Backend Field Mapping: Added proper transformation between frontend (tier) and backend (tier_name) field formats
• Enhanced UI/UX: Improved paid subscribers modal with horizontal layout and proper npub encoding

Changes Made

🔧 Core Functionality

• NPUB Management Modal: Complete form for adding users with tier selection and read/write permissions
• Edit User Modal: Full edit capabilities allowing tier changes and permission updates
• Smart Update Logic: Removes and re-adds entries when tiers change to prevent backend conflicts
• Unified State Management: Merges read and write NPUBs into a single table view with proper tier preservation

🐛 Bug Fixes

• Form Integration: Fixed switch components not properly updating form values in Ant Design forms
• Field Mapping: Added tier_name to tier transformation in API responses to match backend format
• Tier Fallbacks: Implemented robust fallback logic for undefined tier values
• View All Modal: Fixed non-functional "View All" button for paid subscribers with proper npub encoding

🎨 UI Improvements

• Action Buttons: Added edit and delete buttons with proper tooltips and styling
• Modal Layouts: Improved layouts for better user experience
• Permission Controls: Better organized read/write access switches
• Data Display: Enhanced table with proper NPUB truncation and tier tags

🛠️ Technical Improvements

• API Consistency: Standardized field naming between frontend and backend
• Error Handling: Added user-friendly error messages and proper error boundaries
• Code Cleanup: Removed verbose debugging logs while maintaining essential functionality
• Type Safety: Proper TypeScript interfaces and validation

Testing

✅ Add new users with both read and write permissions
✅ Edit existing users to change tiers and permissions
✅ Toggle permissions directly in the table
✅ Remove users completely
✅ View all paid subscribers with proper npub formatting
✅ Form validation and error handling