Release: qt6-migration-2026.07.14
Date: 2026-07-14

Summary
Migrated project to Qt 6.8: updated CMake and cmake modules for Qt6, adjusted sources for Qt6 API changes, removed Strix and added GoogleTest scaffolding, and created a reproducible Docker dev image with Qt 6.8.3.

Migrated subfolders
- ./Z: Core application libraries and widgets (nglwidgets, ngltools, ngldb, nglapplication, nglsettings, nglcompression, etc.) — full Qt6 porting, resources (qrc), Poppler Qt6 integration and tests.
- ./TetraIF: Tetra interface modules (CoPrtCnv, PrtCnv, LogView) — compatibility updates and Qt6 API adjustments.

Key changes
- Docker: app/Dockerfile and app/run_docker.sh (install Qt 6.8.3, poppler-qt6, build Log4Qt)
- CMake: Qt6-first shim, cmake/NGLMacros.cmake, cmake/FindPopplerQt5.cmake compatibility
- Source: Qt6 API fixes (QTimeZone, QLibraryInfo::path, qChecksum overloads, key combo adjustments), resource qrc additions
- Tests: GoogleTest integration; Strix removed

Verification
Tag: qt6-migration-2026.07.14
Ran ./final-migration/run_final_migration.sh in Docker (configure, build, ctest). All tests passed (3/3).

Notes
Merged into main. For follow-up: continue reducing remaining deprecation warnings and consider enabling stricter warning checks in CI.