feat: fix heatmap false-heat on offset shift, hover flicker, type chooser cleanup

- Clear value history when node offsets change (insert/delete/resize/
  manual offset edit) so stale values from old addresses don't show
  false heat coloring
- Invalidate in-flight async reads (bump refreshGen) when tree layout
  changes, preventing stale snapshot data from re-introducing heat
- Fix command bar hover cursor flicker: remove premature
  applyHoverCursor() from applyDocument() — runs correctly via
  applySelectionOverlays() after text is finalized
- Fix hover indicator survival: reorder refresh() so text-modifying
  passes (updateCommandRow) run before overlay passes
- Guard synthetic Leave events during setText() to preserve hover state
- Remove primitives from type chooser when pointer modifier (* / **)
  is active; remove primitives entirely in Root command bar mode
- Add test_editor and test_controller test coverage for heat clearing,
  hover survival, and mixed hex/non-hex type scenarios

CMakeLists.txt

@@ -101,6 +101,14 @@ foreach(_tf ${_theme_files})
     configure_file(${_tf} "${CMAKE_BINARY_DIR}/themes/${_name}" COPYONLY)
 endforeach()
 
+# Copy example .rcx files to build directory
+file(GLOB _example_files "${CMAKE_SOURCE_DIR}/src/examples/*.rcx")
+file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/examples")
+foreach(_ef ${_example_files})
+    get_filename_component(_name ${_ef} NAME)
+    configure_file(${_ef} "${CMAKE_BINARY_DIR}/examples/${_name}" COPYONLY)
+endforeach()
+
 include(deploy)
 
 if(TARGET deploy)
@@ -218,6 +226,16 @@ if(BUILD_TESTING)
     endif()
     add_test(NAME test_context_menu COMMAND test_context_menu)
 
+    add_executable(test_editor tests/test_editor.cpp
+        src/editor.cpp src/compose.cpp src/format.cpp
+        src/providerregistry.cpp
+        src/themes/theme.cpp src/themes/thememanager.cpp)
+    target_include_directories(test_editor PRIVATE src)
+    target_link_libraries(test_editor PRIVATE
+        ${QT}::Widgets ${QT}::PrintSupport ${QT}::Test
+        QScintilla::QScintilla)
+    add_test(NAME test_editor COMMAND test_editor)
+
     add_executable(test_rendered_view tests/test_rendered_view.cpp
         src/generator.cpp src/compose.cpp src/format.cpp)
     target_include_directories(test_rendered_view PRIVATE src)