build(cmake): require standalone spdlog dependency

Remove the monorepo-relative spdlog fallback so this project no longer depends on ../app/lib/spdlog. This makes configuration deterministic when cvmmap-streamer is checked out as an independent repository.

The build now fails fast unless spdlog is provided by the host toolchain, which matches standalone packaging expectations.

CMakeLists.txt

@@ -10,7 +10,7 @@ find_package(Threads REQUIRED)
 
 find_package(cppzmq QUIET)
 find_package(ZeroMQ QUIET)
-find_package(spdlog QUIET)
+find_package(spdlog REQUIRED)
 find_package(PkgConfig REQUIRED)
 
 pkg_check_modules(GSTREAMER
@@ -26,16 +26,6 @@ if (NOT GSTREAMER_FOUND)
 		"and gstreamer-app-1.0>=1.14.")
 endif()
 
-if (NOT TARGET spdlog::spdlog AND NOT TARGET spdlog)
-	if (EXISTS "${CMAKE_CURRENT_LIST_DIR}/../app/lib/spdlog/CMakeLists.txt")
-		set(SPDLOG_BUILD_EXAMPLE OFF)
-		set(SPDLOG_BUILD_TESTS OFF)
-		set(SPDLOG_INSTALL OFF)
-		add_subdirectory(
-			"${CMAKE_CURRENT_LIST_DIR}/../app/lib/spdlog"
-		"${CMAKE_CURRENT_BINARY_DIR}/vendor/spdlog")
-	endif()
-endif()
 add_library(cvmmap_streamer_common STATIC
 	src/ipc/help.cpp
 	src/config/runtime_config.cpp