What

Update three overlay ports whose versions have fallen behind the vcpkg-registry:

• Current: Overlay ports reference outdated source code via hardcoded SHA/tag REFs
• Expected: Overlay ports reference current release versions matching the registry
• Scope: vcpkg-ports/kcenon-{thread,logger,network}-system/

Part of #550

Why

• Local CI validation (validate-vcpkg-chain) tests outdated code that differs from what consumers install via the registry.
• thread_system 0.3.0 requires a MINIMUM_SUPPORTED_VERSION workaround that 0.3.1 has already fixed upstream.
• logger_system 0.1.2 requires include path rewriting (kcenon/logger/ → logger_system/) that may be resolved in 0.1.3.
• network_system 0.1.0 requires a fix-common-system-target.patch and manual ZLIB/OpenSSL fixups that 0.1.1 may have incorporated upstream.

Where

• vcpkg-ports/kcenon-thread-system/vcpkg.json — version 0.3.0
• vcpkg-ports/kcenon-thread-system/portfile.cmake — hardcoded REF v0.3.0, version-file fixup
• vcpkg-ports/kcenon-logger-system/vcpkg.json — version 0.1.2, port-version 2
• vcpkg-ports/kcenon-logger-system/portfile.cmake — hardcoded SHA REF, include path rewrite, static linkage force
• vcpkg-ports/kcenon-network-system/vcpkg.json — version 0.1.0, port-version 5, hardcoded deps
• vcpkg-ports/kcenon-network-system/portfile.cmake — hardcoded SHA REF, patch, manual fixups
• vcpkg-ports/kcenon-network-system/fix-common-system-target.patch — to be removed

How

Technical Approach

For each system, replace overlay port files with the registry equivalents:

1. Copy vcpkg-registry/ports/kcenon-{system}/vcpkg.json → vcpkg-ports/kcenon-{system}/vcpkg.json
2. Copy vcpkg-registry/ports/kcenon-{system}/portfile.cmake → vcpkg-ports/kcenon-{system}/portfile.cmake
3. Remove obsolete .patch files no longer referenced by the new portfile
4. Verify validate-vcpkg-chain CI still passes

Acceptance Criteria

• thread_system overlay version is 0.3.1 with v${VERSION} REF template
• logger_system overlay version is 0.1.3 with v${VERSION} REF template
• network_system overlay version is 0.1.1 with v${VERSION} REF template and feature-based logging
• fix-common-system-target.patch removed from network_system overlay
• No hardcoded SHA or tag REFs remain in updated portfiles
• Version-file fixup workaround removed from thread_system portfile