feat: add candidate FreeCAD naming SDK and attachment oracles

Build and verify the candidate-only FreeCAD naming bridge and OCCT worker path, including three-stage StringHasher restoration. Add Datum, ShapeBinder, attachment-mode, and PartDesign structure oracles plus offline SDK build plans and CI boundary checks.

config/cmake/boost/BoostConfig.cmake

@@ -0,0 +1,33 @@
+set(Boost_VERSION 108300)
+set(Boost_VERSION_STRING "1.83.0")
+set(Boost_INCLUDE_DIRS "${BOOST_WASM_ROOT}/include")
+set(Boost_INCLUDE_DIR "${Boost_INCLUDE_DIRS}")
+set(Boost_LIBRARIES "")
+
+foreach(component IN LISTS Boost_FIND_COMPONENTS)
+  string(TOLOWER "${component}" component_lower)
+  set(archive "${BOOST_WASM_ROOT}/lib/libboost_${component_lower}.a")
+  if(NOT EXISTS "${archive}")
+    set(Boost_${component}_FOUND FALSE)
+    set(Boost_FOUND FALSE)
+    if(Boost_FIND_REQUIRED_${component})
+      message(FATAL_ERROR "Missing Boost wasm component ${component}: ${archive}")
+    endif()
+    continue()
+  endif()
+  if(NOT TARGET Boost::${component})
+    add_library(Boost::${component} STATIC IMPORTED)
+    set_target_properties(Boost::${component} PROPERTIES
+      IMPORTED_LOCATION "${archive}"
+      INTERFACE_INCLUDE_DIRECTORIES "${Boost_INCLUDE_DIRS}"
+    )
+    if(component_lower STREQUAL "thread")
+      set_property(TARGET Boost::${component} APPEND PROPERTY INTERFACE_LINK_LIBRARIES
+        "${BOOST_WASM_ROOT}/lib/libboost_atomic.a")
+    endif()
+  endif()
+  set(Boost_${component}_FOUND TRUE)
+  list(APPEND Boost_LIBRARIES Boost::${component})
+endforeach()
+
+set(Boost_FOUND TRUE)