Complete Qt6 migration: full clean build green across groups G1-G12 incl. runtime plugin set

new_docker_build.sh gains Group 12 (212 GUI/Data plugins); fixes LtsUtilsGuiDds visibility (LTO-stripped exports), LtsProjectionWorkstation unity name shadow, 6 unity-off dirs (dup file-scope statics, ddsftc INTERFACE sources) and reconfigures BUILD_FILTERMANAGEMENT/BUILD_PLUGINS_SERVICEMONITOR=ON

qt6-after/qt6-migrated-legatus/Lts/Viewer/SituationMap/Symbology/CMakeLists.txt

@@ -13,6 +13,15 @@ else()
   set(Qt6_Widgets "")
 endif()
 
+# Build this target as separate translation units (NOT a unity build). The Esri ArcGIS
+# SDK header MapTypes.h does Q_DECLARE_METATYPE(Esri::ArcGISRuntime::LoadStatus) at line
+# 525; when this target's sources + moc are concatenated into one unity TU, the moc's
+# meta-object code instantiates QMetaTypeId<Esri::ArcGISRuntime::LoadStatus> before that
+# declaration, so the vendor Q_DECLARE_METATYPE becomes a "specialization after
+# instantiation" redefinition (a Qt6 error). Legacy (Qt5, separate TUs) never hit this.
+# Disabling unity restores the legacy per-TU structure for this target (behavior-neutral).
+set(CMAKE_UNITY_BUILD FALSE)
+
 
 SET(Symbology_SRCS
   sidc_codec.cpp

qt6-after/qt6-migrated-legatus/Lts/Viewer/SituationMap/Symbology/symbol_data_to_render_role.h

@@ -25,7 +25,7 @@ namespace AdvancedSymbology
 template<class PARTICIPANT_ROLE_TYPE = ParticipantManagement::Role>
 AdvancedSymbology::Role roleToRole(const PARTICIPANT_ROLE_TYPE role)
 {
-  switch (role.underlying())
+  switch (role)
   {
   case ParticipantManagement::Role::Unknown:
     return AdvancedSymbology::Role::Unknown;