feat: Add NAM Loader pedal for machine learning based amp simulation #1139

Workflow file for this run

	name: CI - Build and Test

	on:
	push:
	branches: [main]
	pull_request:
	branches: [develop, main]

	permissions:
	contents: read
	pull-requests: write
	issues: write

	jobs:
	test-linux:
	name: Test on Linux
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 0

	- name: Cache apt packages
	uses: actions/cache@v5
	id: apt-cache
	with:
	path: ~/apt-cache
	key: apt-${{ runner.os }}-${{ hashFiles('.github/workflows/ci.yml') }}

	- name: Install Dependencies
	run: \|
	if [ "${{ steps.apt-cache.outputs.cache-hit }}" = "true" ] && [ -d ~/apt-cache ]; then
	echo "Restoring cached .deb packages..."
	sudo cp ~/apt-cache/*.deb /var/cache/apt/archives/ 2>/dev/null \|\| true
	fi
	sudo apt-get update -qq
	sudo apt-get install -y --no-install-recommends \
	build-essential cmake ninja-build lcov \
	libportaudio2 portaudio19-dev \
	libsdl2-dev libgl1-mesa-dev libglu1-mesa-dev \
	librtmidi-dev
	mkdir -p ~/apt-cache
	cp /var/cache/apt/archives/*.deb ~/apt-cache/ 2>/dev/null \|\| true

	- name: Setup External Dependencies
	run: \|
	chmod +x scripts/setup_dependencies.sh
	./scripts/setup_dependencies.sh --no-system-deps

	- name: Generate Version
	id: version
	run: \|
	COUNT=$(git rev-list --count HEAD)
	echo "version=0.1.${COUNT}" >> $GITHUB_OUTPUT

	- name: Build
	run: \|
	mkdir -p build && cd build
	cmake -G Ninja -DCMAKE_BUILD_TYPE=Debug \
	-DAMPLITRON_VERSION="${{ steps.version.outputs.version }}" \
	-DCMAKE_C_FLAGS="--coverage -O0 -g" \
	-DCMAKE_CXX_FLAGS="--coverage -O0 -g" \
	-DCMAKE_EXE_LINKER_FLAGS="--coverage" \
	..
	ninja -j$(nproc)

	- name: Run Tests
	run: cd build && ./amplitron-tests

	- name: Install Smoke Test
	env:
	INSTALL_PREFIX: ${{ runner.temp }}/amplitron-install
	run: \|
	cmake --install build --prefix "$INSTALL_PREFIX"
	test -x "$INSTALL_PREFIX/bin/Amplitron"
	"$INSTALL_PREFIX/bin/Amplitron" --version \| grep -q "Amplitron v1.0"

	- name: Uninstall Smoke Test
	env:
	INSTALL_PREFIX: ${{ runner.temp }}/amplitron-install
	run: \|
	make PREFIX="$INSTALL_PREFIX" uninstall
	test ! -e "$INSTALL_PREFIX/bin/Amplitron"
	test ! -e "$INSTALL_PREFIX/share/amplitron"
	test ! -e "$INSTALL_PREFIX/bin/assets"

	- name: Generate Linux Coverage
	if: github.event_name == 'pull_request' \|\| (github.event_name == 'push' && github.ref == 'refs/heads/main')
	run: \|
	LCOV_IGNORE="--ignore-errors mismatch,mismatch,gcov,gcov,source,source,inconsistent,inconsistent,format,format,unsupported,unsupported,corrupt,corrupt,unused,unused"
	lcov --capture --initial --directory build --output-file coverage_base.info $LCOV_IGNORE
	lcov --capture --directory build --output-file coverage_test.info $LCOV_IGNORE
	lcov --add-tracefile coverage_base.info --add-tracefile coverage_test.info \
	--output-file coverage.info $LCOV_IGNORE
	sed -i 's\|/build/../\|/\|g' coverage.info
	sed -i 's\|SF:.*/Amplitron/\|SF:/home/runner/work/Amplitron/Amplitron/\|g' coverage.info
	lcov --remove coverage.info \
	'/usr/' '/Library/' '/opt/homebrew/' 'external/' 'tests/' 'build/' 'mingw64/' '_temp/' 'include/c++/*' \
	--output-file coverage.filtered.info $LCOV_IGNORE
	lcov --summary coverage.filtered.info $LCOV_IGNORE \| tee coverage-summary.txt

	- name: Quick Linux Coverage Summary
	if: github.event_name == 'pull_request' \|\| (github.event_name == 'push' && github.ref == 'refs/heads/main')
	run: \|
	LCOV_IGNORE="--ignore-errors unused,unused,inconsistent,inconsistent,format,format,corrupt,corrupt,unsupported,unsupported"
	COVERAGE=$(lcov --summary coverage.filtered.info $LCOV_IGNORE 2>&1 \| awk '/lines......:/ {print $2}' \| sed 's/%//')
	echo "Linux line coverage: $COVERAGE%"
	echo "### Linux Coverage: ${COVERAGE}%" >> $GITHUB_STEP_SUMMARY

	- name: Upload Linux Coverage
	if: github.event_name == 'pull_request' \|\| (github.event_name == 'push' && github.ref == 'refs/heads/main')
	uses: actions/upload-artifact@v7
	with:
	name: linux-coverage
	path: coverage.filtered.info
	retention-days: 1

	- name: Upload Build
	if: github.ref == 'refs/heads/main' && github.event_name == 'push'
	uses: actions/upload-artifact@v7
	with:
	name: linux-build
	path: build/Amplitron
	retention-days: 1


	test-macos:
	name: Test on macOS
	runs-on: macos-latest
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 0

	- name: Install Dependencies
	run: brew install portaudio sdl2 rtmidi lcov ninja

	- name: Setup External Dependencies
	run: \|
	chmod +x scripts/setup_dependencies.sh
	./scripts/setup_dependencies.sh --no-system-deps

	- name: Generate Version
	id: version
	run: \|
	COUNT=$(git rev-list --count HEAD)
	echo "version=0.1.${COUNT}" >> $GITHUB_OUTPUT

	- name: Build
	run: \|
	HOMEBREW_PREFIX=$(brew --prefix)
	if [ "${{ github.event_name }}" = "pull_request" ] \|\| [ "${{ github.ref }}" = "refs/heads/main" ]; then
	BUILD_TYPE=Debug
	COV_FLAGS="--coverage -O0 -g"
	LINK_FLAGS="--coverage"
	else
	BUILD_TYPE=Release
	COV_FLAGS=""
	LINK_FLAGS=""
	fi
	mkdir -p build && cd build
	cmake -G Ninja -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
	-DAMPLITRON_VERSION="${{ steps.version.outputs.version }}" \
	-DCMAKE_C_FLAGS="$COV_FLAGS" \
	-DCMAKE_CXX_FLAGS="$COV_FLAGS" \
	-DCMAKE_EXE_LINKER_FLAGS="$LINK_FLAGS" \
	-DPORTAUDIO_INCLUDE_DIRS="$HOMEBREW_PREFIX/include" \
	-DPORTAUDIO_LIBRARIES="$HOMEBREW_PREFIX/lib/libportaudio.dylib" \
	-DSDL2_INCLUDE_DIRS="$HOMEBREW_PREFIX/include/SDL2" \
	-DSDL2_LIBRARIES="$HOMEBREW_PREFIX/lib/libSDL2.dylib" \
	-DRTMIDI_INCLUDE_DIRS="$HOMEBREW_PREFIX/include" \
	-DRTMIDI_LIBRARIES="$HOMEBREW_PREFIX/lib/librtmidi.dylib" \
	..
	ninja -j$(sysctl -n hw.ncpu)

	- name: Run Tests
	run: cd build && ./amplitron-tests

	- name: Install Smoke Test
	env:
	INSTALL_PREFIX: ${{ runner.temp }}/amplitron-install
	run: \|
	cmake --install build --prefix "$INSTALL_PREFIX"
	test -x "$INSTALL_PREFIX/bin/Amplitron"
	"$INSTALL_PREFIX/bin/Amplitron" --version \| grep -q "Amplitron v1.0"

	- name: Uninstall Smoke Test
	env:
	INSTALL_PREFIX: ${{ runner.temp }}/amplitron-install
	run: \|
	make PREFIX="$INSTALL_PREFIX" uninstall
	test ! -e "$INSTALL_PREFIX/bin/Amplitron"
	test ! -e "$INSTALL_PREFIX/share/amplitron"
	test ! -e "$INSTALL_PREFIX/bin/assets"

	- name: Generate macOS Coverage
	if: github.event_name == 'pull_request' \|\| (github.event_name == 'push' && github.ref == 'refs/heads/main')
	run: \|
	printf '#!/bin/bash\nexec xcrun llvm-cov gcov "$@"\n' > /tmp/llvm-gcov.sh
	chmod +x /tmp/llvm-gcov.sh
	LCOV_IGNORE="--ignore-errors mismatch,mismatch,gcov,gcov,source,source,inconsistent,inconsistent,format,format,unsupported,unsupported,corrupt,corrupt,unused,unused"
	lcov --capture --directory build --output-file coverage.info \
	--gcov-tool /tmp/llvm-gcov.sh $LCOV_IGNORE
	sed -i '' 's\|/build/../\|/\|g' coverage.info
	sed -i '' 's\|SF:.*/Amplitron/\|SF:/home/runner/work/Amplitron/Amplitron/\|g' coverage.info
	lcov --remove coverage.info \
	'/usr/' '/Library/' '/opt/homebrew/' 'external/' 'tests/' 'build/' 'mingw64/' '_temp/' 'include/c++/*' \
	--output-file coverage.filtered.info $LCOV_IGNORE
	lcov --summary coverage.filtered.info $LCOV_IGNORE \| tee coverage-summary-macos.txt

	- name: Upload macOS Coverage
	if: github.event_name == 'pull_request' \|\| (github.event_name == 'push' && github.ref == 'refs/heads/main')
	uses: actions/upload-artifact@v7
	with:
	name: macos-coverage
	path: coverage.filtered.info
	retention-days: 1

	- name: Bundle Dylibs
	if: github.ref == 'refs/heads/main' && github.event_name == 'push'
	run: \|
	set -e
	mkdir -p staging
	cp build/Amplitron staging/

	echo "=== Original linked libraries ==="
	otool -L staging/Amplitron

	otool -L staging/Amplitron \| tail -n +2 \| awk '{print $1}' > /tmp/deps.txt
	cat /tmp/deps.txt

	while IFS= read -r lib; do
	case "$lib" in
	/usr/lib/\|/System/\|@executable_path/\|@rpath/\|@loader_path/*) continue ;;
	esac
	libname=$(basename "$lib")
	echo ">>> Bundling: $lib -> staging/$libname"
	cp -L "$lib" "staging/$libname"
	chmod 644 "staging/$libname"
	echo ">>> Fixing reference: $lib -> @executable_path/$libname"
	install_name_tool -change "$lib" "@executable_path/$libname" staging/Amplitron
	done < /tmp/deps.txt

	for dylib in staging/*.dylib; do
	[ -f "$dylib" ] \|\| continue
	libname=$(basename "$dylib")
	echo ">>> Fixing dylib id: $libname"
	install_name_tool -id "@executable_path/$libname" "$dylib"

	otool -L "$dylib" \| tail -n +2 \| awk '{print $1}' > /tmp/subdeps.txt
	while IFS= read -r lib; do
	case "$lib" in
	/usr/lib/\|/System/\|@executable_path/\|@rpath/\|@loader_path/*) continue ;;
	esac
	depname=$(basename "$lib")
	echo ">>> Fixing sub-dep in $libname: $lib -> @executable_path/$depname"
	if [ ! -f "staging/$depname" ]; then
	cp -L "$lib" "staging/$depname"
	chmod 644 "staging/$depname"
	install_name_tool -id "@executable_path/$depname" "staging/$depname"
	fi
	install_name_tool -change "$lib" "@executable_path/$depname" "$dylib"
	done < /tmp/subdeps.txt
	done

	echo ""
	echo "=== After bundling ==="
	otool -L staging/Amplitron
	echo "=== Dylib links ==="
	for f in staging/*.dylib; do
	[ -f "$f" ] \|\| continue
	echo "--- $(basename $f) ---"
	otool -L "$f"
	done
	echo "=== Staged files ==="
	ls -la staging/

	- name: Upload Build
	if: github.ref == 'refs/heads/main' && github.event_name == 'push'
	uses: actions/upload-artifact@v7
	with:
	name: macos-build
	path: staging/
	retention-days: 1

	build-web:
	name: Build Web Demo (Emscripten)
	runs-on: ubuntu-latest
	env:
	EMSDK_VERSION: 3.1.51
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 0

	- name: Cache Emscripten SDK & ports
	uses: actions/cache@v5
	id: emsdk-cache
	with:
	path: \|
	emsdk
	~/.emscripten_cache
	key: emsdk-${{ env.EMSDK_VERSION }}-${{ runner.os }}-${{ hashFiles('CMakeLists.txt') }}
	restore-keys: \|
	emsdk-${{ env.EMSDK_VERSION }}-${{ runner.os }}-

	- name: Setup Emscripten
	if: steps.emsdk-cache.outputs.cache-hit != 'true'
	run: \|
	if [ -d emsdk ]; then
	cd emsdk && git pull
	else
	git clone https://github.com/emscripten-core/emsdk.git
	cd emsdk
	fi
	./emsdk install $EMSDK_VERSION
	./emsdk activate $EMSDK_VERSION

	- name: Activate Emscripten
	run: \|
	cd emsdk
	./emsdk activate $EMSDK_VERSION
	echo "${{ github.workspace }}/emsdk" >> $GITHUB_PATH
	echo "${{ github.workspace }}/emsdk/upstream/emscripten" >> $GITHUB_PATH

	- name: Setup External Dependencies
	run: \|
	chmod +x scripts/setup_dependencies.sh
	./scripts/setup_dependencies.sh --no-system-deps

	- name: Generate Version
	id: version
	run: \|
	COUNT=$(git rev-list --count HEAD)
	echo "version=0.1.${COUNT}" >> $GITHUB_OUTPUT

	- name: Build WASM
	run: \|
	source emsdk/emsdk_env.sh
	mkdir -p build-web && cd build-web
	emcmake cmake -DCMAKE_BUILD_TYPE=Release -DAMPLITRON_VERSION="${{ steps.version.outputs.version }}" ..
	emmake make -j$(nproc)

	- name: Upload Web Build
	uses: actions/upload-artifact@v7
	with:
	name: web-build
	path: build-web/
	retention-days: 1

	test-web:
	name: Test Web Demo (Playwright)
	needs: build-web
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 0

	- name: Download web build artifact
	uses: actions/download-artifact@v8
	with:
	name: web-build
	path: web-build/

	- name: Setup Node.js
	uses: actions/setup-node@v6
	with:
	node-version: "20"
	cache: "npm"
	cache-dependency-path: tests/web/package.json

	- name: Install Playwright & dependencies
	working-directory: tests/web
	run: \|
	npm ci
	npx playwright install --with-deps chromium

	- name: Run Playwright tests
	working-directory: tests/web
	env:
	WEB_BUILD_DIR: ${{ github.workspace }}/web-build
	CI: true
	run: npx playwright test

	- name: Upload Playwright HTML report
	if: always()
	uses: actions/upload-artifact@v7
	with:
	name: playwright-report
	path: tests/web/playwright-report/
	retention-days: 7

	- name: Upload Playwright test results
	if: always()
	uses: actions/upload-artifact@v7
	with:
	name: playwright-test-results
	path: tests/web/test-results/
	retention-days: 7


	test-windows:
	name: Test on Windows
	runs-on: windows-latest
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 1

	- name: Setup MSYS2
	uses: msys2/setup-msys2@v2
	with:
	msystem: MINGW64
	update: false
	pacboy: >-
	gcc:p
	cmake:p
	ninja:p
	ccache:p
	portaudio:p
	SDL2:p
	rtmidi:p
	install: git lcov
	cache: true

	- name: Restore ccache
	uses: actions/cache@v5
	continue-on-error: true
	with:
	path: .ccache
	key: ccache-windows-${{ runner.os }}-${{ hashFiles('src/*/.cpp', 'src/*/.h', 'CMakeLists.txt') }}
	restore-keys: \|
	ccache-windows-${{ runner.os }}-
	ccache-windows-

	- name: Setup External Dependencies
	shell: msys2 {0}
	run: \|
	chmod +x scripts/setup_dependencies.sh
	./scripts/setup_dependencies.sh --no-system-deps

	- name: Generate Version
	id: version
	shell: bash
	run: echo "version=0.1.${{ github.run_number }}" >> $GITHUB_OUTPUT

	- name: Build
	shell: msys2 {0}
	run: \|
	export CCACHE_DIR="$GITHUB_WORKSPACE/.ccache"
	export CCACHE_MAXSIZE=200M
	mkdir -p "$CCACHE_DIR"
	if [ "${{ github.event_name }}" = "pull_request" ] \|\| [ "${{ github.ref }}" = "refs/heads/main" ]; then
	BUILD_TYPE=RelWithDebInfo
	COV_FLAGS="--coverage -O2"
	LINK_FLAGS="--coverage"
	else
	BUILD_TYPE=Release
	COV_FLAGS=""
	LINK_FLAGS=""
	fi
	mkdir -p build && cd build
	cmake -G Ninja -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
	-DAMPLITRON_VERSION="${{ steps.version.outputs.version }}" \
	-DCMAKE_C_FLAGS="$COV_FLAGS" \
	-DCMAKE_CXX_FLAGS="$COV_FLAGS" \
	-DCMAKE_EXE_LINKER_FLAGS="$LINK_FLAGS" \
	-DCMAKE_C_COMPILER_LAUNCHER=ccache \
	-DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
	..
	ninja -j$NUMBER_OF_PROCESSORS
	ccache -s

	- name: Run Tests
	shell: msys2 {0}
	run: cd build && ./amplitron-tests.exe

	- name: Install Smoke Test
	shell: msys2 {0}
	env:
	INSTALL_PREFIX: ${{ runner.temp }}\amplitron-install
	run: \|
	cmake --install build --prefix "$INSTALL_PREFIX"
	test -x "$INSTALL_PREFIX/bin/Amplitron.exe"
	"$INSTALL_PREFIX/bin/Amplitron.exe" --version \| grep -q "Amplitron v1.0"

	- name: Uninstall Smoke Test
	shell: msys2 {0}
	env:
	INSTALL_PREFIX: ${{ runner.temp }}\amplitron-install
	run: \|
	rm -f "$INSTALL_PREFIX/bin/Amplitron.exe"
	rm -rf "$INSTALL_PREFIX/share/amplitron"
	rm -rf "$INSTALL_PREFIX/bin/assets"
	test ! -e "$INSTALL_PREFIX/bin/Amplitron.exe"
	test ! -e "$INSTALL_PREFIX/share/amplitron"
	test ! -e "$INSTALL_PREFIX/bin/assets"

	- name: Generate Windows Coverage
	if: github.event_name == 'pull_request' \|\| (github.event_name == 'push' && github.ref == 'refs/heads/main')
	shell: msys2 {0}
	run: \|
	LCOV_VER=$(lcov --version 2>&1 \| grep -oP '\d+' \| head -1)
	if [ "$LCOV_VER" -ge 2 ] 2>/dev/null; then
	LCOV_IGNORE="--ignore-errors gcov,gcov,source,source,inconsistent,inconsistent,format,format,unsupported,unsupported,corrupt,corrupt,unused,unused"
	else
	LCOV_IGNORE=""
	fi
	lcov --capture \
	--directory build/CMakeFiles/amplitron_core.dir \
	--directory build/CMakeFiles/Amplitron.dir \
	--directory build/CMakeFiles/amplitron-tests.dir \
	--output-file coverage.info $LCOV_IGNORE 2>&1 \| tail -20
	sed -i 's\|\\\|/\|g' coverage.info
	sed -i 's\|/build/../\|/\|g' coverage.info
	sed -i 's\|SF:.*/Amplitron/\|SF:/home/runner/work/Amplitron/Amplitron/\|g' coverage.info
	lcov --remove coverage.info \
	'/usr/' '/Library/' '/opt/homebrew/' 'external/' 'tests/' 'build/' 'mingw64/' '_temp/' 'include/c++/*' \
	--output-file coverage.filtered.info $LCOV_IGNORE 2>&1 \| tail -5
	lcov --summary coverage.filtered.info $LCOV_IGNORE \| tee coverage-summary-windows.txt

	- name: Upload Windows Coverage
	if: github.event_name == 'pull_request' \|\| (github.event_name == 'push' && github.ref == 'refs/heads/main')
	uses: actions/upload-artifact@v7
	with:
	name: windows-coverage
	path: coverage.filtered.info
	retention-days: 1

	- name: Collect Binaries
	if: github.ref == 'refs/heads/main' && github.event_name == 'push'
	shell: msys2 {0}
	run: \|
	mkdir -p staging
	cp build/amplitron.exe staging/Amplitron.exe
	for dll in libgcc_s_seh-1.dll libstdc++-6.dll libwinpthread-1.dll SDL2.dll; do
	cp /mingw64/bin/$dll staging/ 2>/dev/null \|\| true
	done
	cp /mingw64/bin/libportaudio*.dll staging/ 2>/dev/null \|\| true
	cp /mingw64/bin/librtmidi*.dll staging/ 2>/dev/null \|\| true
	ls -la staging/

	- name: Upload Build
	if: github.ref == 'refs/heads/main' && github.event_name == 'push'
	uses: actions/upload-artifact@v7
	with:
	name: windows-build
	path: staging/
	retention-days: 1

	build-android:
	name: Build Android APK
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 0

	- name: Set up JDK 17
	uses: actions/setup-java@v5
	with:
	java-version: "17"
	distribution: "temurin"

	- name: Set up Gradle
	uses: gradle/actions/setup-gradle@v6

	- name: Install Android NDK r27
	run: \|
	echo "y" \| $ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager \
	"ndk;27.1.12297006" \
	"cmake;3.22.1"

	- name: Setup External Dependencies
	run: \|
	chmod +x scripts/setup_dependencies.sh
	./scripts/setup_dependencies.sh --no-system-deps

	- name: Fetch SDL2 Java bridge
	run: \|
	git clone --depth 1 --branch release-2.30.12 \
	https://github.com/libsdl-org/SDL.git sdl2-src
	mkdir -p android/app/src/main/java/org/libsdl/app
	cp sdl2-src/android-project/app/src/main/java/org/libsdl/app/*.java \
	android/app/src/main/java/org/libsdl/app/

	- name: Generate Version
	id: version
	run: \|
	COUNT=$(git rev-list --count HEAD)
	echo "version=0.1.${COUNT}" >> $GITHUB_OUTPUT

	- name: Build APK
	working-directory: android
	run: \|
	./gradlew assembleRelease \
	-PamplitronVersion=${{ steps.version.outputs.version }} \
	--no-daemon

	- name: Validate APK
	run: \|
	APK=$(find android/app/build/outputs/apk/release -name "*.apk" \| head -1)
	echo "APK: $APK ($(du -sh "$APK" \| cut -f1))"

	$ANDROID_HOME/build-tools/34.0.0/aapt2 dump badging "$APK" \
	\| grep -E "^(package\|sdkVersion\|targetSdkVersion\|uses-permission\|native-code)"

	unzip -p "$APK" lib/arm64-v8a/libmain.so \| file - \
	\| grep -i "ELF.*aarch64" \
	\|\| { echo "ARM64 libmain.so not found or invalid"; exit 1; }

	echo "APK validation passed."

	- name: Upload APK
	if: github.ref == 'refs/heads/main' && github.event_name == 'push'
	uses: actions/upload-artifact@v7
	with:
	name: android-build
	path: android/app/build/outputs/apk/release/
	retention-days: 1

	build-ios:
	name: Build iOS App (Device)
	runs-on: macos-latest
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 0

	- name: Setup External Dependencies
	run: \|
	chmod +x scripts/setup_dependencies.sh
	./scripts/setup_dependencies.sh --no-system-deps

	- name: Generate Version
	id: version
	run: \|
	COUNT=$(git rev-list --count HEAD)
	echo "version=0.1.${COUNT}" >> $GITHUB_OUTPUT

	- name: Cache SDL2 iOS static library
	id: sdl2-ios-cache
	uses: actions/cache@v5
	with:
	path: ~/sdl2-ios
	key: sdl2-ios-arm64-2.30.12

	- name: Build SDL2 for iOS
	if: steps.sdl2-ios-cache.outputs.cache-hit != 'true'
	run: \|
	curl -fsSL https://github.com/libsdl-org/SDL/archive/refs/tags/release-2.30.12.tar.gz \| tar xz
	cmake -S SDL-release-2.30.12 -B sdl2-build \
	-G "Unix Makefiles" \
	-DCMAKE_SYSTEM_NAME=iOS \
	-DCMAKE_OSX_DEPLOYMENT_TARGET=15.0 \
	-DCMAKE_OSX_ARCHITECTURES=arm64 \
	-DCMAKE_INSTALL_PREFIX=$HOME/sdl2-ios \
	-DCMAKE_BUILD_TYPE=Release \
	-DSDL_STATIC=ON -DSDL_SHARED=OFF -DSDL_TEST=OFF
	cmake --build sdl2-build -j$(sysctl -n hw.ncpu)
	cmake --install sdl2-build

	- name: Cache CMake configure output
	id: cmake-cache
	uses: actions/cache@v5
	with:
	path: build-ios
	key: ios-cmake-${{ runner.os }}-${{ hashFiles('CMakeLists.txt', 'ios/Info.plist', '.github/workflows/ci.yml') }}
	restore-keys: \|
	ios-cmake-${{ runner.os }}-

	- name: Configure
	if: steps.cmake-cache.outputs.cache-hit != 'true'
	run: \|
	cmake \
	-DCMAKE_SYSTEM_NAME=iOS \
	-DCMAKE_OSX_DEPLOYMENT_TARGET=15.0 \
	-DCMAKE_OSX_ARCHITECTURES="arm64" \
	-DAMPLITRON_VERSION="${{ steps.version.outputs.version }}" \
	-DSDL2_INCLUDE_DIRS=$HOME/sdl2-ios/include/SDL2 \
	-DSDL2_LIBRARIES="$HOME/sdl2-ios/lib/libSDL2main.a;$HOME/sdl2-ios/lib/libSDL2.a" \
	-G Xcode \
	-S . -B build-ios

	- name: Query build products path
	id: ios-paths
	run: \|
	PRODUCTS_DIR=$(xcodebuild -project build-ios/Amplitron.xcodeproj \
	-scheme Amplitron -configuration Release -sdk iphoneos \
	-showBuildSettings 2>/dev/null \
	\| grep ' BUILT_PRODUCTS_DIR' \| awk '{print $3}')
	echo "products_dir=$PRODUCTS_DIR" >> $GITHUB_OUTPUT
	echo "Build products dir: $PRODUCTS_DIR"

	- name: Build iOS Device
	run: \|
	set -o pipefail
	xcodebuild \
	-project build-ios/Amplitron.xcodeproj \
	-scheme Amplitron \
	-configuration Release \
	-sdk iphoneos \
	ONLY_ACTIVE_ARCH=YES \
	CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO \
	build 2>&1 \| tee /tmp/xcode.log \| xcpretty --color; \
	STATUS=${PIPESTATUS[0]}; \
	[ $STATUS -eq 0 ] \|\| { echo "=== FULL XCODE LOG ==="; cat /tmp/xcode.log; exit $STATUS; }

	- name: Validate .app bundle
	run: \|
	PRODUCTS_DIR="${{ steps.ios-paths.outputs.products_dir }}"
	APP="$PRODUCTS_DIR/Amplitron.app"
	if [ ! -d "$APP" ]; then
	echo "Amplitron.app not found at $APP"
	echo "Searching workspace..."
	find . -name "Amplitron.app" -type d 2>/dev/null \|\| true
	exit 1
	fi
	echo "App bundle: $APP"

	BINARY="$APP/Amplitron"
	file "$BINARY"
	lipo -info "$BINARY" \| grep -E "arm64" \
	\|\| { echo "Expected arm64 slice not found"; exit 1; }

	plutil -lint "$APP/Info.plist"
	BUNDLE_ID=$(/usr/libexec/PlistBuddy -c "Print CFBundleIdentifier" "$APP/Info.plist")
	[ "$BUNDLE_ID" = "com.amplitron.app" ] \
	\|\| { echo "Wrong bundle ID: $BUNDLE_ID"; exit 1; }

	echo ".app validation passed."

	- name: Package .ipa
	if: github.ref == 'refs/heads/main' && github.event_name == 'push'
	run: \|
	APP="${{ steps.ios-paths.outputs.products_dir }}/Amplitron.app"
	mkdir -p ios-staging/Payload
	cp -R "$APP" ios-staging/Payload/
	cd ios-staging && zip -r Amplitron.ipa Payload/
	ls -la

	- name: Upload iOS App
	if: github.ref == 'refs/heads/main' && github.event_name == 'push'
	uses: actions/upload-artifact@v7
	with:
	name: ios-build
	path: ios-staging/Amplitron.ipa
	retention-days: 1

	merge-coverage:
	name: Merge Cross-Platform Coverage
	needs: [test-linux, test-macos, test-windows]
	if: ${{ !cancelled() && (github.event_name == 'pull_request' \|\| (github.event_name == 'push' && github.ref == 'refs/heads/main')) }}
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6

	- name: Install lcov
	run: \|
	sudo apt-get update -qq
	sudo apt-get install -y --no-install-recommends lcov

	- name: Download Linux Coverage
	uses: actions/download-artifact@v8
	with:
	name: linux-coverage
	path: coverage-linux/

	- name: Download macOS Coverage
	uses: actions/download-artifact@v8
	continue-on-error: true
	id: macos-dl
	with:
	name: macos-coverage
	path: coverage-macos/

	- name: Download Windows Coverage
	uses: actions/download-artifact@v8
	continue-on-error: true
	id: windows-dl
	with:
	name: windows-coverage
	path: coverage-windows/

	- name: Merge Coverage Reports
	run: \|
	MERGE_CMD="lcov"

	MERGE_CMD="$MERGE_CMD --add-tracefile coverage-linux/coverage.filtered.info"
	PLATFORMS="Linux"

	if [ -f coverage-macos/coverage.filtered.info ]; then
	MERGE_CMD="$MERGE_CMD --add-tracefile coverage-macos/coverage.filtered.info"
	PLATFORMS="$PLATFORMS + macOS"
	fi

	if [ -f coverage-windows/coverage.filtered.info ]; then
	MERGE_CMD="$MERGE_CMD --add-tracefile coverage-windows/coverage.filtered.info"
	PLATFORMS="$PLATFORMS + Windows"
	fi

	LCOV_IGNORE="--ignore-errors unused,unused,inconsistent,inconsistent,format,format,corrupt,corrupt,unsupported,unsupported,source,source,mismatch,mismatch,gcov,gcov"
	GENHTML_IGNORE="--ignore-errors unused,unused,inconsistent,inconsistent,format,format,corrupt,corrupt,unsupported,unsupported,source,source,category,category"
	$MERGE_CMD --output-file merged.info $LCOV_IGNORE
	echo "PLATFORMS=$PLATFORMS" >> $GITHUB_ENV

	genhtml merged.info --output-directory coverage-report $GENHTML_IGNORE --synthesize-missing --prefix $GITHUB_WORKSPACE
	lcov --summary merged.info $LCOV_IGNORE \| tee merged-summary.txt

	- name: Generate Merged Coverage Comment
	run: \|
	LCOV_IGNORE="--ignore-errors unused,unused,inconsistent,inconsistent,format,format,corrupt,corrupt,unsupported,unsupported,source,source,mismatch,mismatch,gcov,gcov"
	COVERAGE=$(lcov --summary merged.info $LCOV_IGNORE 2>&1 \| awk '/lines......:/ {print $2}' \| sed 's/%//')
	echo "Merged line coverage: $COVERAGE%"

	THRESHOLD=60

	echo "### 🌍 Cross-Platform Coverage Report" > coverage_comment.md
	echo "Platforms: ${{ env.PLATFORMS }}" >> coverage_comment.md
	echo "Merged Line Coverage: ${COVERAGE}%" >> coverage_comment.md
	echo "" >> coverage_comment.md

	if awk "BEGIN {exit !($COVERAGE >= $THRESHOLD)}"; then
	echo "✅ Coverage meets threshold: $COVERAGE% >= $THRESHOLD%" >> coverage_comment.md
	else
	echo "⚠️ Coverage is below threshold: $COVERAGE% < $THRESHOLD%" >> coverage_comment.md
	fi

	echo "" >> coverage_comment.md
	echo "<details>" >> coverage_comment.md
	echo "<summary>Full Merged Coverage Summary</summary>" >> coverage_comment.md
	echo "" >> coverage_comment.md
	echo '```text' >> coverage_comment.md
	cat merged-summary.txt >> coverage_comment.md
	echo '```' >> coverage_comment.md
	echo "</details>" >> coverage_comment.md

	cat coverage_comment.md >> $GITHUB_STEP_SUMMARY



	- name: Upload Merged Coverage HTML Report
	uses: actions/upload-artifact@v7
	with:
	name: coverage-report
	path: coverage-report/
	retention-days: 7

	- name: Upload Merged Coverage Info
	uses: actions/upload-artifact@v7
	with:
	name: merged-coverage-summary
	path: \|
	merged.info
	merged-summary.txt
	retention-days: 7

	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v5
	with:
	files: merged.info
	flags: cross-platform
	name: cross-platform-coverage
	fail_ci_if_error: true
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

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feat: Add NAM Loader pedal for machine learning based amp simulation #1139

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