Add Debian packaging and update Forgejo workflow

- Add complete Debian packaging configuration (debian/ directory)
- Create build-deb.sh script for building packages
- Update Forgejo workflow to build and upload .deb artifacts
- Add comprehensive version naming for both binary and Debian artifacts
- Update .gitignore to exclude build artifacts and packaging files
- Add PACKAGING.md documentation
- Add test-deb.sh for testing package installation

build-deb.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+set -e
+
+# Build script for deb-bootupd Debian package
+# This script builds a proper .deb package following Debian packaging standards
+
+echo "🐳 Building deb-bootupd Debian package..."
+
+# Check if we're in the right directory
+if [ ! -f "Cargo.toml" ] || [ ! -d "debian" ]; then
+    echo "❌ Error: This script must be run from the deb-bootupd root directory"
+    exit 1
+fi
+
+# Check for required tools
+command -v dpkg-buildpackage >/dev/null 2>&1 || { echo "❌ Error: dpkg-buildpackage not found. Install build-essential and devscripts."; exit 1; }
+command -v lintian >/dev/null 2>&1 || { echo "⚠️  Warning: lintian not found. Install lintian for package validation."; }
+
+# Clean previous builds
+echo "🧹 Cleaning previous build artifacts..."
+rm -rf target/ debian/deb-bootupd/ *.deb *.changes *.buildinfo *.dsc
+
+# Build the package
+echo "🔨 Building Debian package..."
+dpkg-buildpackage -b -uc -us
+
+# Check if build was successful
+if [ $? -eq 0 ]; then
+    echo "✅ Package built successfully!"
+    
+    # List generated files
+    echo "📦 Generated files:"
+    ls -la ../*.deb ../*.changes ../*.buildinfo ../*.dsc 2>/dev/null || echo "No package files found in parent directory"
+    
+    # Validate package with lintian if available
+    if command -v lintian >/dev/null 2>&1; then
+        echo "🔍 Running lintian validation..."
+        lintian ../*.changes || echo "⚠️  Lintian found some issues (see above)"
+    fi
+    
+    echo ""
+    echo "🎉 deb-bootupd Debian package built successfully!"
+    echo "📦 Install with: sudo dpkg -i ../deb-bootupd_*.deb"
+    echo "🔧 Fix dependencies with: sudo apt-get install -f"
+    
+else
+    echo "❌ Package build failed!"
+    exit 1
+fi