Clean release snapshot

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.22)
+project(slopsmith_audio VERSION 0.1.0)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+# cmake-js integration
+if(DEFINED CMAKE_JS_INC)
+    message(STATUS "Building as Node.js native addon (cmake-js)")
+else()
+    message(WARNING "CMAKE_JS_INC not defined — building standalone (for testing only)")
+endif()
+
+# JUCE — add as subdirectory (submodule)
+if(EXISTS "${CMAKE_SOURCE_DIR}/JUCE/CMakeLists.txt")
+    add_subdirectory(JUCE)
+else()
+    message(FATAL_ERROR "JUCE submodule not found. Run: git submodule update --init --recursive")
+endif()
+
+# NAM Core (Neural Amp Modeler)
+set(NAM_DIR "${CMAKE_SOURCE_DIR}/src/audio/third_party/NAM")
+if(EXISTS "${NAM_DIR}/CMakeLists.txt")
+    set(NAM_AVAILABLE ON)
+    # NAM uses its own build system — we'll include its source directly
+    message(STATUS "NeuralAmpModelerCore found")
+else()
+    set(NAM_AVAILABLE OFF)
+    message(STATUS "NeuralAmpModelerCore not found — NAM support disabled")
+endif()
+
+# RTNeural
+set(RTNEURAL_DIR "${CMAKE_SOURCE_DIR}/src/audio/third_party/RTNeural")
+if(EXISTS "${RTNEURAL_DIR}/CMakeLists.txt")
+    set(RTNEURAL_AVAILABLE ON)
+    set(RTNEURAL_XSIMD ON CACHE BOOL "Use XSIMD backend for RTNeural")
+    add_subdirectory("${RTNEURAL_DIR}" rtneural_build EXCLUDE_FROM_ALL)
+    message(STATUS "RTNeural found")
+else()
+    set(RTNEURAL_AVAILABLE OFF)
+    message(STATUS "RTNeural not found")
+endif()
+
+# ONNX Runtime — for the Basic Pitch ML note detector (MlNoteDetector).
+# Sets ONNXRUNTIME_AVAILABLE; build still succeeds (YIN fallback) if it can't
+# be obtained. See cmake/onnxruntime.cmake.
+include("${CMAKE_SOURCE_DIR}/cmake/onnxruntime.cmake")
+
+add_subdirectory(src/audio)
+
+# Out-of-process VST helpers (slopsmith-vst-host on all platforms now that the
+# POSIX sandbox runtime exists; macOS also builds the slopsmith-vst-scan probe).
+add_subdirectory(src/vst-host)
+
+# Tests (cross-platform; gated on SLOPSMITH_BUILD_TESTS, default ON). The
+# audio-ring loopback runs everywhere; the control-channel + posix_spawn smoke
+# tests are POSIX-only (see tests/sandbox/CMakeLists.txt). enable_testing() must
+# be at the top level so `ctest` from the root build directory discovers tests
+# registered via add_test() in subdirectories.
+if(EXISTS "${CMAKE_SOURCE_DIR}/tests/CMakeLists.txt")
+    enable_testing()
+    add_subdirectory(tests)
+endif()