Auto-fetch JUCE via FetchContent when JUCE/ dir is missing (Linux fix)

CMakeLists.txt

@@ -4,7 +4,20 @@ project(ChromaFlock VERSION 1.0.0 LANGUAGES C CXX)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-add_subdirectory(JUCE)
+include(FetchContent)
+
+if(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/JUCE/CMakeLists.txt")
+    message(STATUS "JUCE not found locally — fetching from GitHub...")
+    FetchContent_Declare(
+        JUCE
+        GIT_REPOSITORY https://github.com/juce-framework/JUCE.git
+        GIT_TAG        8.0.6
+        GIT_SHALLOW    TRUE
+    )
+    FetchContent_MakeAvailable(JUCE)
+else()
+    add_subdirectory(JUCE)
+endif()
 
 juce_add_binary_data(ChromaFlockBinaryData
     NAMESPACE BinaryData