Admin: For managing administrators with role-based access
LlmProvider: For managing LLM service providers
Created SQL schema:
All tables as per the database design
Proper foreign key constraints and indexes
Timestamps for auditing
Appropriate character sets and collations
Added operation logging:
Created LogService for centralized logging
Integrated logging into TokenService
Logs all token-related operations with user info and IP address
Enhanced token management:
Added comprehensive logging for all token operations
Improved error handling and validation
Added proper cleanup for revoked tokens
