Part of #558

What

The kcenon-logger-system port declares kcenon-thread-system as a core dependency in its vcpkg.json, but the portfile explicitly disables it with -DLOGGER_USE_THREAD_SYSTEM=OFF.

• Current: Port installs kcenon-thread-system (and its transitive dep simdutf) but never links against it
• Expected: Port dependencies match what the build actually consumes
• Scope: vcpkg-ports/kcenon-logger-system/vcpkg.json

Why

• Consumers pay unnecessary compile time for kcenon-thread-system + simdutf installation
• The portfile comment explicitly states: "upstream CMake does not link thread_system library properly in vcpkg mode"
• Contradictory declared-but-disabled dependency confuses maintainers and consumers

Where

• vcpkg-ports/kcenon-logger-system/vcpkg.json — line 10: "kcenon-thread-system" in dependencies
• vcpkg-ports/kcenon-logger-system/portfile.cmake — line 23: -DLOGGER_USE_THREAD_SYSTEM=OFF

How

Technical Approach

1. Remove "kcenon-thread-system" from vcpkg-ports/kcenon-logger-system/vcpkg.json dependencies array
2. Verify the portfile's -DLOGGER_USE_THREAD_SYSTEM=OFF remains correct
3. Mirror the change in kcenon/vcpkg-registry if applicable

Acceptance Criteria

• kcenon-thread-system is not listed as a dependency in the logger_system port vcpkg.json
• -DLOGGER_USE_THREAD_SYSTEM=OFF remains in portfile
• Logger system port still builds and installs correctly without thread_system