5W1H Specification

• Who: Maintainers
• What: Remove all deprecated APIs marked for v3.0.0 removal
• Where: All header files with deprecated APIs
• When: v3.0.0 release (Phase 4)
• Why: Clean API surface, reduce maintenance burden
• How: Remove deprecated code, update tests and documentation

Parent Issue

Part of #213 - Deprecated API Removal Plan for v3.0.0

Prerequisites

• deprecation: Document all deprecated APIs in DEPRECATION.md #214 - Documentation complete
• Phase 2 - Compiler warnings in place
• Phase 3 - Downstream systems notified and migrated

APIs to Remove

1. logger_interface.h
   • log(log_level, const std::string&, const std::string& file, int line, const std::string& function)

Deliverables

• Remove deprecated API implementations
• Update all tests
• Update all documentation
• Release notes with breaking change notices

Acceptance Criteria

• No deprecated APIs remain in codebase
• All tests pass
• Documentation reflects current API surface
• CHANGELOG documents breaking changes