Summary

The common_system library has been enhanced with C++20 Concepts support (see common_system#192). This issue tracks updating thread_system to use the improved common_system.

Background

The common_system enhancement (PR #194) introduces:

1. Error Clarity: Concise concept violation messages replacing verbose SFINAE template errors
2. Self-Documentation: Explicit type requirements without boilerplate
3. Code Simplification: ~30% reduction in std::enable_if patterns
4. Better IDE Support: Improved auto-completion and type hint accuracy

New Concept Categories

• Result/Optional: Resultable, Unwrappable, Mappable
• Executor: Invocable, VoidCallable, JobLike, ExecutorLike
• Event Bus: EventType, EventHandler, EventFilter
• Service Container: ServiceInterface, ServiceImplementation, ServiceFactory
• Configuration: ConfigSection, Validatable

Tasks

• Update common_system submodule/dependency to latest version
• Review and update code to leverage new C++20 Concepts where applicable
• Update CI/CD workflows if needed for C++20 compiler requirements (GCC 10+, Clang 10+, MSVC 2019 16.3+)
• Ensure all tests pass with the updated dependency
• Update documentation if necessary

Related

• common_system#192 - Original C++20 Concepts enhancement issue
• common_system#194 - Merged PR implementing the concepts