feat: kernel memory plugin + unified source menu + driver improvements

- KernelMemory plugin: kernel-mode process/physical memory R/W via IOCTL driver
- rcxdrv.sys: MmCopyMemory for reads, MDL mapping with correct cache types
  (MmCached for RAM, MmNonCached for MMIO only — fixes cache corruption BSOD)
- Driver reconnect: ensureDriverLoaded tries device handle first, no auto
  stop+delete cycle. Manual unload closes handle only, service stays running.
- Unified source menu: ProviderRegistry::populateSourceMenu() shared by both
  main window Data Source menu and RcxEditor inline picker (icons + dll names)
- IProviderPlugin::populatePluginMenu() for conditional plugin actions
  (e.g. "Unload Kernel Driver" only when loaded)
- Physical memory mode removed from selectTarget (access via context menu only)
- requestOpenProviderTab sets base address from provider after template load
- Address parser: vtop(), cr3(), physRead() callbacks for kernel paging expressions

plugins/KernelMemory/CMakeLists.txt

@@ -0,0 +1,63 @@
+cmake_minimum_required(VERSION 3.20)
+project(KernelMemoryPlugin LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# Qt is found by the parent project; QT variable (Qt5 or Qt6) is inherited
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+set(CMAKE_AUTOUIC OFF)   # run uic manually to avoid dupbuild with ProcessMemoryPlugin
+
+# ─── Generate ui_processpicker.h in our own build dir ────────────────
+set(_UI_SRC "${CMAKE_CURRENT_SOURCE_DIR}/../../src/processpicker.ui")
+set(_UI_HDR "${CMAKE_CURRENT_BINARY_DIR}/ui_processpicker.h")
+
+add_custom_command(
+    OUTPUT  "${_UI_HDR}"
+    COMMAND ${QT}::uic -o "${_UI_HDR}" "${_UI_SRC}"
+    DEPENDS "${_UI_SRC}"
+    COMMENT "UIC processpicker.ui (KernelMemoryPlugin)"
+    VERBATIM
+)
+
+# ─── Plugin DLL ──────────────────────────────────────────────────────
+set(PLUGIN_SOURCES
+    KernelMemoryPlugin.h
+    KernelMemoryPlugin.cpp
+    rcx_drv_protocol.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src/processpicker.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src/processpicker.cpp
+    "${_UI_HDR}"
+)
+
+add_library(KernelMemoryPlugin SHARED ${PLUGIN_SOURCES})
+
+target_link_libraries(KernelMemoryPlugin PRIVATE
+    ${QT}::Widgets
+    ${_QT_WINEXTRAS}
+)
+
+if(WIN32)
+    target_link_libraries(KernelMemoryPlugin PRIVATE psapi shell32 advapi32)
+endif()
+
+if(UNIX AND NOT APPLE)
+    target_compile_options(KernelMemoryPlugin PRIVATE -fvisibility=hidden)
+endif()
+
+target_include_directories(KernelMemoryPlugin PRIVATE
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    ${CMAKE_CURRENT_BINARY_DIR}   # for ui_processpicker.h
+)
+
+set_target_properties(KernelMemoryPlugin PROPERTIES
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/Plugins"
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/Plugins"
+)
+
+install(TARGETS KernelMemoryPlugin
+    LIBRARY DESTINATION Plugins
+    RUNTIME DESTINATION Plugins
+)