chore: cleanup build artifacts and add .gitignore

build_binary_linux.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+set -e
+
+echo "🐧 Building Linux x86_64 binary via Docker (Ubuntu 22.04 base)..."
+
+mkdir -p dist
+
+docker run --rm \
+  --platform linux/amd64 \
+  -v "$PWD":/work \
+  -w /work \
+  ubuntu:22.04 \
+  bash -c '
+    set -e
+    export DEBIAN_FRONTEND=noninteractive
+    
+    # Install Python 3.12 and build tools
+    apt-get update -qq
+    apt-get install -y -qq software-properties-common
+    add-apt-repository -y ppa:deadsnakes/ppa
+    apt-get update -qq
+    apt-get install -y -qq \
+      python3.12 \
+      python3.12-venv \
+      python3.12-dev \
+      binutils \
+      gcc \
+      g++ \
+      make \
+      libffi-dev
+    
+    # Install pip for Python 3.12
+    python3.12 -m ensurepip
+    python3.12 -m pip install -q --upgrade pip
+    python3.12 -m pip install -q pyinstaller
+    python3.12 -m pip install -q -r requirements.txt
+    
+    echo "📝 Patching for frozen build..."
+    python3.12 -c "
+import sys
+with open(\"src/pyhdwallet.py\", \"r\") as f:
+    content = f.read()
+content = content.replace(
+    \"def _require(mod: str, pkg: str) -> None:\\n    try:\",
+    \"def _require(mod: str, pkg: str) -> None:\\n    import sys\\n    if getattr(sys, \\\"frozen\\\", False): return\\n    try:\"
+)
+with open(\"/tmp/pyhdwallet_frozen.py\", \"w\") as f:
+    f.write(content)
+"
+    
+    echo "🔧 Building with PyInstaller..."
+    python3.12 -m PyInstaller --onefile --name pyhdwallet-linux --clean \
+      --collect-all bip_utils \
+      --collect-all pgpy \
+      --collect-all nacl \
+      --collect-all pyzipper \
+      --collect-all coincurve \
+      --copy-metadata coincurve \
+      /tmp/pyhdwallet_frozen.py
+    
+    echo "✅ Linux binary created (compatible with Ubuntu 22.04+)"
+  '
+
+echo ""
+echo "Binary location: dist/pyhdwallet-linux"
+echo "Size: $(du -h dist/pyhdwallet-linux 2>/dev/null | cut -f1 || echo 'N/A')"
+echo "GLIBC: $(docker run --rm --platform linux/amd64 -v "$PWD/dist":/b ubuntu:22.04 ldd /b/pyhdwallet-linux | grep libc.so || echo 'static')"
+echo ""
+echo "Test it:"
+echo "  docker run --rm --platform linux/amd64 -v \"\$PWD/dist\":/bin ubuntu:22.04 /bin/pyhdwallet-linux test"