4.0.0

Changed

Models - Errors

• Error System Migration to T-Strings - Refactored error system to use t-string template formatting with inline context variables
  • Removed ErrorDetailDTO and ErrorMessageType dependencies
  • Added class attributes (code, message_en, message_fa, http_status, grpc_status) to BaseError
  • Implemented t-string template formatting with context variables in error messages
  • Override get_message() in error classes with explicit variable passing
  • Applied Persian number conversion for FA language messages
  • Removed deprecated http_status_code_value and grpc_status_code_value properties
  • Removed _get_grpc_status_code method, use _convert_int_to_grpc_status directly
  • Updated all error classes (validation, auth, resource, database, business, network, system, keycloak, temporal)
  • Updated FastAPI integration, adapters, and utilities
  • Fixed MyPy type errors in BaseError.to_dict() and gRPC metadata handling

Tests

• Comprehensive Error Handling Tests - Added comprehensive error handling tests for FastAPI and gRPC
  • Added BDD test scenarios for FastAPI error handling (fastapi_error_handling.feature)
  • Added BDD test scenarios for gRPC error handling (grpc_error_handling.feature)
  • Implemented test step definitions for error handling scenarios
  • Added test servers and utilities for FastAPI and gRPC error testing
  • Renamed "exception" to "error" in behave test files and features for consistency

Chore

• Python Version References - Updated all Python version references to 3.14
  • Updated documentation and configuration files to reflect Python 3.14 requirement
  • Aligned version references across the codebase

Full Changelog: 3.15.3...4.0.0