feat(lite): add ObsidianDragonLite build mode and gate full-node features

Add --lite build flow and ObsidianDragonLite target naming, hide full-node pages/features in lite mode, enforce pool-only mining in lite, and include chat port feasibility audit documentation.

CMakeLists.txt

@@ -36,6 +36,16 @@ endif()
 # Options
 option(DRAGONX_USE_SYSTEM_SDL3 "Use system SDL3 instead of fetching" ON)
 option(DRAGONX_ENABLE_EMBEDDED_DAEMON "Enable embedded dragonxd support" ON)
+option(DRAGONX_BUILD_LITE "Build ObsidianDragonLite variant without full-node features" OFF)
+
+if(DRAGONX_BUILD_LITE)
+    set(DRAGONX_APP_NAME "ObsidianDragonLite")
+    set(DRAGONX_BINARY_NAME "ObsidianDragonLite")
+    set(DRAGONX_ENABLE_EMBEDDED_DAEMON OFF CACHE BOOL "Enable embedded dragonxd support" FORCE)
+else()
+    set(DRAGONX_APP_NAME "ObsidianDragon")
+    set(DRAGONX_BINARY_NAME "ObsidianDragon")
+endif()
 
 include(CTest)
 
@@ -518,6 +528,8 @@ add_executable(ObsidianDragon
     ${WIN_RC_FILE}
 )
 
+set_target_properties(ObsidianDragon PROPERTIES OUTPUT_NAME "${DRAGONX_BINARY_NAME}")
+
 target_include_directories(ObsidianDragon PRIVATE
     ${CMAKE_SOURCE_DIR}/src
     ${CMAKE_SOURCE_DIR}/src/embedded
@@ -570,6 +582,8 @@ endif()
 # Compile definitions
 target_compile_definitions(ObsidianDragon PRIVATE
     DRAGONX_DEBUG
+    DRAGONX_LITE_BUILD=$<BOOL:${DRAGONX_BUILD_LITE}>
+    DRAGONX_ENABLE_EMBEDDED_DAEMON=$<BOOL:${DRAGONX_ENABLE_EMBEDDED_DAEMON}>
 )
 if(WIN32)
     target_compile_definitions(ObsidianDragon PRIVATE DRAGONX_USE_DX11)
@@ -727,7 +741,7 @@ install(TARGETS ObsidianDragon
 )
 
 install(DIRECTORY ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/res
-    DESTINATION share/ObsidianDragon
+    DESTINATION share/${DRAGONX_BINARY_NAME}
     OPTIONAL
 )