fix(zephyr): use absolute module paths in CMakeLists

Zephyr includes module CMakeLists from its own build context; relative paths
for lib/, include/, and subsys/ failed to resolve. Prefix with
CMAKE_CURRENT_LIST_DIR so module files are found consistently.

Co-Authored-By: Oz <oz-agent@warp.dev>

Author: tbitcs

CMakeLists.txt

@@ -3,21 +3,21 @@
 if(CONFIG_ARBITER)
   zephyr_library()
   zephyr_library_sources(
-    lib/ARBITER_engine.c
-    lib/ARBITER_fact_store.c
-    lib/ARBITER_eval.c
-    lib/ARBITER_trace.c
+    ${CMAKE_CURRENT_LIST_DIR}/lib/ARBITER_engine.c
+    ${CMAKE_CURRENT_LIST_DIR}/lib/ARBITER_fact_store.c
+    ${CMAKE_CURRENT_LIST_DIR}/lib/ARBITER_eval.c
+    ${CMAKE_CURRENT_LIST_DIR}/lib/ARBITER_trace.c
   )
 
   zephyr_library_sources_ifdef(CONFIG_ARBITER_BLOB_LOADER
-    lib/ARBITER_blob.c
+    ${CMAKE_CURRENT_LIST_DIR}/lib/ARBITER_blob.c
   )
 
   zephyr_library_sources_ifdef(CONFIG_ARBITER_ACTION_DISPATCHER
-    lib/ARBITER_action.c
+    ${CMAKE_CURRENT_LIST_DIR}/lib/ARBITER_action.c
   )
 
-  zephyr_include_directories(include)
+  zephyr_include_directories(${CMAKE_CURRENT_LIST_DIR}/include)
 
-  add_subdirectory_ifdef(CONFIG_ARBITER subsys/arbiter)
+  add_subdirectory_ifdef(CONFIG_ARBITER ${CMAKE_CURRENT_LIST_DIR}/subsys/arbiter)
 endif()

LEDGER.md

@@ -1,5 +1,16 @@
 # Change Ledger
 
+## 2026-05-31T23:44 — Fix Zephyr module CMake source path resolution
+- **Author**: Oz
+- **Type**: fix
+- **REQs affected**: REQ-BUILD-001, REQ-ARCH-016
+- **Summary**: Updated root `CMakeLists.txt` to use
+  `${CMAKE_CURRENT_LIST_DIR}` for all module source, include, and subsystem
+  paths. This makes the Zephyr module resolve files correctly regardless of
+  whether it is included from the workspace root, `app/`, or
+  `modules/lib/arbiter/`.
+- **Status**: complete
+
 ## 2026-05-31T23:39 — Fix Zephyr module CMake guard
 - **Author**: Oz
 - **Type**: fix