- Added reusable validation functions (`validate_password_strength`, `validate_phone_number`, etc.) to centralize schema validation in `validators.py`.
- Updated `schemas/users.py` to use shared validators, simplifying and unifying validation logic.
- Introduced new error codes (`AUTH_007`, `SYS_005`) for enhanced error specificity.
- Refactored exception handling in admin routes to use more appropriate error types (`AuthorizationError`, `DuplicateError`).
- Improved organization query performance by replacing N+1 queries with optimized methods for member counts and data aggregation.
- Strengthened security in JWT decoding to prevent algorithm confusion attacks, with strict validation of required claims and algorithm enforcement.
- Implemented `CRUDOrganizationAsync`, `CRUDSessionAsync`, and `CRUDUserAsync` with full async support for database operations.
- Added filtering, sorting, pagination, and advanced methods for organization management.
- Developed session-specific logic, including cleanup, per-device management, and security enhancements.
- Enhanced user CRUD with password hashing and comprehensive update handling.
