T13: NativeMixer mirror server pipeline (track gain/pan constant-power + brickwall limiter tanh, wired VST2/VST3 bridge, golden test 0.0001dB)

native_host/CMakeLists.txt

@@ -32,7 +32,7 @@ target_compile_definitions(vst3_host_bridge PRIVATE
     NOMINMAX
     WIN32_LEAN_AND_MEAN
 )
-target_link_libraries(vst3_host_bridge PRIVATE audio_engine)
+target_link_libraries(vst3_host_bridge PRIVATE audio_engine native_mixer)
 
 # Native audio loop (T12): SPSC + WASAPI — dùng chung cho cả 2 bridge.
 add_library(audio_engine STATIC
@@ -47,6 +47,12 @@ target_compile_definitions(audio_engine PRIVATE
 )
 target_link_libraries(audio_engine PUBLIC ole32 avrt)
 
+# NativeMixer (T13): track gain/pan + master brickwall limiter — mirror server.
+add_library(native_mixer STATIC
+    NativeMixer.cpp
+)
+target_include_directories(native_mixer PUBLIC native_host)
+
 # VST2 host bridge — chỉ cần vestige.h clean-room, không cần SDK.
 add_library(vst2_host_bridge SHARED
     VST2AudioEngine.cpp
@@ -57,4 +63,4 @@ target_compile_definitions(vst2_host_bridge PRIVATE
     NOMINMAX
     WIN32_LEAN_AND_MEAN
 )
-target_link_libraries(vst2_host_bridge PRIVATE audio_engine)
+target_link_libraries(vst2_host_bridge PRIVATE audio_engine native_mixer)