Migration infrastructure updates for Qt6/RTI 7.7

- Updated MIGRATION_STATUS.md with current build status and blockers
- Updated combined-migration-compact.prompt.md with latest instructions
- Updated Dockerfile for migration pipeline with RTI 7.7 support
- Updated build scripts for Docker-based migration workflow

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Entire-Checkpoint: 01M1BQ6VBZ20E1WJ29NYGT8EWJ

.github/prompts/combined-migration-compact.prompt.md

@@ -11,8 +11,8 @@ Migrate the legacy Qt5/C++11 desktop application to Qt6/C++17, preserve behavior
 - Stop early only if required source material is missing, the task is impossible, or a destructive action would be required.
 
 ## Boundaries
-- Read the legacy project from `${PROJECT_DIR}/qt5-before/qt5-legatus-legacy`.
-- Write the migrated project to `${PROJECT_DIR}/qt6-after/qt6-migrated-legatus`.
+- Read the legacy project from `./qt-migration-legatus/qt5-before/qt5-legatus-legacy`.
+- Write the migrated project to `./qt-migration-legatus/qt6-after/qt6-migrated-legatus`.
 - Do not modify the legacy source tree in place.
 - Limit changes to the target tree and only the CI/build/test files needed to support migration and validation.
 
@@ -66,18 +66,18 @@ Migrate the legacy Qt5/C++11 desktop application to Qt6/C++17, preserve behavior
 
 ## Tests
 - For every code change inside a method, add at least three tests covering the changed behavior.
-- Place generated tests in `${PROJECT_DIR}/qt6-after/qt6-migrated-legatus/tests`.
+- Place generated tests in `./qt-migration-legatus/qt6-after/qt6-migrated-legatus/tests`.
 - Use policy-compatible test filenames such as:
   - `test_<name>.cpp`
   - `<name>_test.cpp`
   - `<name>test.cpp`
   - `<name>gtest.cpp`
-  as searched for in `${PROJECT_DIR}/ci/check_pr_policies.py`
+  as searched for in `./qt-migration-legatus/ci/check_pr_policies.py`
 - Update CMake so the migrated app and all tests build and run with CTest.
 - Ensure all tests are registered with CTest.
 
 ## Docker-First Validation
-Use `lifemaps/ci-cpp:latest` as the authoritative environment. Do not substitute host tools for missing container tools. Treat `${PROJECT_DIR}/ci/Dockerfile.ci` as the source of truth for CI dependencies.
+Use `lifemaps/ci-cpp:latest` as the authoritative environment. Do not substitute host tools for missing container tools. Treat `./qt-migration-legatus/ci/Dockerfile.ci` as the source of truth for CI dependencies.
 
 ### Required validation sequence
 1. Configure in Docker
@@ -87,20 +87,20 @@ Use `lifemaps/ci-cpp:latest` as the authoritative environment. Do not substitute
 
 ### Recommended commands
 - Configure:
-  `cmake -S ${PROJECT_DIR}/qt6-after/qt6-migrated-legatus -B build -G Ninja -DCMAKE_BUILD_TYPE=Debug`
+  `cmake -S ./qt-migration-legatus/qt6-after/qt6-migrated-legatus -B build -G Ninja -DCMAKE_BUILD_TYPE=Debug`
 - Build:
   `cmake --build build --parallel`
 - Test:
   `ctest --test-dir build --output-on-failure`
 - Policy:
-  `python3 ${PROJECT_DIR}/ci/check_pr_policies.py`
+  `python3 ./qt-migration-legatus/ci/check_pr_policies.py`
 
 Adapt paths/flags only if repository inspection proves they must differ.
 
 ## Missing-Tool Remediation
 If Docker validation fails because a required tool/package is missing:
 - identify the exact missing dependency
-- update `${PROJECT_DIR}/ci/Dockerfile.ci` minimally
+- update `./qt-migration-legatus/ci/Dockerfile.ci` minimally
 - rebuild `lifemaps/ci-cpp:latest`
 - rerun the full validation sequence
 
@@ -114,7 +114,7 @@ Environment failures:
 - missing compiler/toolchain utility
 - missing Qt dev package
 - missing CMake/Ninja/CTest support tool
-- missing dependency required by `${PROJECT_DIR}/ci/check_pr_policies.py`
+- missing dependency required by `./qt-migration-legatus/ci/check_pr_policies.py`
 
 Project failures:
 - compile errors
@@ -123,18 +123,18 @@ Project failures:
 - formatting/policy failures caused by migration changes
 
 ## Policy Awareness
-- `${PROJECT_DIR}/ci/check_pr_policies.py` checks formatting for changed C/C++ files, expects related tests, and verifies commit-signature conditions in its diff range.
+- `./qt-migration-legatus/ci/check_pr_policies.py` checks formatting for changed C/C++ files, expects related tests, and verifies commit-signature conditions in its diff range.
 - Ensure Docker validation runs with mounted workspace and git metadata available.
 - Do not claim success unless the policy script passes.
 
 ## Execution Plan
-1. Inspect `${PROJECT_DIR}` and the target tree.
+1. Inspect `./qt-migration-legatus/` and the target tree.
 2. Identify Qt5 and legacy C++ constructs to migrate.
 3. Migrate incrementally in `qt6-after/qt6-migrated-legatus`.
 4. Add/update tests with each behavior-relevant change.
 5. Update CMake/test registration.
 6. Validate in Docker.
-7. If missing dependencies are found, update `${PROJECT_DIR}/ci/Dockerfile.ci`, rebuild, and rerun.
+7. If missing dependencies are found, update `./qt-migration-legatus/ci/Dockerfile.ci`, rebuild, and rerun.
 8. Repeat until success or a real project defect remains.
 
 ## Reporting
@@ -144,13 +144,13 @@ Group change explanations by:
 - C++ modernization
 - UI/resource preservation
 - tests added
-- `${PROJECT_DIR}/ci/Dockerfile.ci` / container updates
+- `./qt-migration-legatus/ci/Dockerfile.ci` / container updates
 
 Also provide a concise changed-files summary.
 
 ## Completion Criteria
 Success requires:
-- migrated project exists under `${PROJECT_DIR}/qt6-after/qt6-migrated-legatus`
+- migrated project exists under `./qt-migration-legatus/qt6-after/qt6-migrated-legatus`
 - configure succeeds in Docker
 - build succeeds in Docker
 - tests succeed in Docker

app/Dockerfile

@@ -63,7 +63,7 @@ RUN python3 -m venv /opt/venv \
     && /opt/venv/bin/pip install --upgrade pip setuptools wheel \
     && /opt/venv/bin/pip install -r /app/requirements.txt aqtinstall \
     && mkdir -p "${QT_BASE_DIR}" \
-    && /opt/venv/bin/python -m aqt install-qt linux desktop "${QT_VERSION}" "${QT_ARCH}" -m qtmultimedia qtserialport qtimageformats qtwebsockets qtwebengine qtpdf qtwebview qt5compat qtwebchannel qtpositioning qtlocation --outputdir "${QT_BASE_DIR}" \
+    && /opt/venv/bin/python -m aqt install-qt linux desktop "${QT_VERSION}" "${QT_ARCH}" -m qtmultimedia qtserialport qtimageformats qtwebsockets qtwebengine qtpdf qtwebview qt5compat qtwebchannel qtpositioning qtlocation qtsensors --outputdir "${QT_BASE_DIR}" \
     && test -f "${QT_ROOT}/lib/cmake/Qt6/Qt6Config.cmake"
 
 # Build and install Log4Qt via script in /app (keeps Dockerfile small)

app/build_log4qt.sh

@@ -2,20 +2,43 @@
 set -e
 
 cd /tmp
+rm -rf ./log4qt
 git clone --depth 1 https://github.com/MEONMedical/Log4Qt.git ./log4qt
 cd log4qt
 
+# Patch source files BEFORE build for C++17 compatibility
+# Fix 1: Replace C++20 spaceship operator in level.h
+sed -i 's/\[\[nodiscard\]\] constexpr auto operator<=>(const Level\& other) const noexcept = default;/bool operator<(const Level\& other) const noexcept { return mValue < other.mValue; }\n    bool operator<=(const Level\& other) const noexcept { return mValue <= other.mValue; }\n    bool operator>(const Level\& other) const noexcept { return mValue > other.mValue; }\n    bool operator>=(const Level\& other) const noexcept { return mValue >= other.mValue; }\n    bool operator==(const Level\& other) const noexcept { return mValue == other.mValue; }/' src/log4qt/level.h
+
+# Fix 2: Ensure mThreshold.load() is used in appenderskeleton.h
+sed -i 's/return (mThreshold <= level)/return (mThreshold.load() <= level)/g' src/log4qt/appenderskeleton.h
+
 mkdir build && cd build
-cmake .. -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_STANDARD=17
+cmake .. \
+  -DCMAKE_INSTALL_PREFIX=/usr/local \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_CXX_STANDARD=17 \
+  -DCMAKE_CXX_STANDARD_REQUIRED=ON \
+  -DLOG4QT_BUILD_TESTS=OFF \
+  -DLOG4QT_EXAMPLES=OFF \
+  -DLOG4QT_BUILD_SHARED_LIBS=ON
 make -j$(nproc)
 make install
 
-# Patch installed headers for C++17 compatibility
-# Fix 1: Replace C++20 spaceship operator with traditional comparison operators in level.h
-# Uses mValue (the actual member variable) instead of mLevel
-sed -i 's/\[\[nodiscard\]\] constexpr auto operator<=>(const Level\& other) const noexcept = default;/bool operator<(const Level\& other) const noexcept { return mValue < other.mValue; }\n    bool operator<=(const Level\& other) const noexcept { return mValue <= other.mValue; }\n    bool operator>(const Level\& other) const noexcept { return mValue > other.mValue; }\n    bool operator>=(const Level\& other) const noexcept { return mValue >= other.mValue; }\n    bool operator==(const Level\& other) const noexcept { return mValue == other.mValue; }/' /usr/local/include/log4qt/level.h
+# Verify CMake config files were installed
+if [ -f /usr/local/lib/cmake/Log4Qt/Log4QtConfig.cmake ]; then
+  echo "Log4Qt CMake config installed successfully"
+else
+  echo "WARNING: Log4Qt CMake config not found, creating manually..."
+  mkdir -p /usr/local/lib/cmake/Log4Qt
+  cat > /usr/local/lib/cmake/Log4Qt/Log4QtConfig.cmake << 'EOF'
+include(CMakeFindDependencyMacro)
+find_dependency(Qt6 COMPONENTS Core)
+include("${CMAKE_CURRENT_LIST_DIR}/Log4QtTargets.cmake")
+set(Log4Qt_FOUND TRUE)
+set(Log4Qt_INCLUDE_DIRS "/usr/local/include")
+set(Log4Qt_LIBRARIES "log4qt")
+EOF
+fi
 
-# Fix 2: Ensure mThreshold.load() is used in appenderskeleton.h
-sed -i 's/return (mThreshold <= level)/return (mThreshold.load() <= level)/g' /usr/local/include/log4qt/appenderskeleton.h
-
-echo "log4qt built and patched for C++17"
+echo "log4qt built and installed with CMake config"