feat: add Windows support to build system

- Add make build-windows for Windows AMD64
- Update make build-all to include Windows
- Update release script to package Windows binary as .zip
- Add Windows installation instructions to docs
- Windows binary: qfs-windows-amd64.exe (~17MB)

All platforms now supported:
- Linux AMD64 (.tar.gz)
- macOS Intel/ARM (.tar.gz)
- Windows AMD64 (.zip)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Makefile

@@ -33,8 +33,14 @@ build-macos:
 	@echo "✓ Built: bin/$(BINARY)-darwin-amd64"
 	@echo "✓ Built: bin/$(BINARY)-darwin-arm64"
 
+# Build release for Windows (cross-compile)
+build-windows:
+	@echo "Building $(BINARY) for Windows..."
+	CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags="$(LDFLAGS)" -o bin/$(BINARY)-windows-amd64.exe ./cmd/qfs
+	@echo "✓ Built: bin/$(BINARY)-windows-amd64.exe"
+
 # Build all platforms
-build-all: build-release build-linux build-macos
+build-all: build-release build-linux build-macos build-windows
 
 # Create release packages for all platforms
 release:
@@ -77,6 +83,7 @@ help:
 	@echo "  build-release  Build optimized release (default)"
 	@echo "  build-linux    Cross-compile for Linux"
 	@echo "  build-macos    Cross-compile for macOS (Intel + Apple Silicon)"
+	@echo "  build-windows  Cross-compile for Windows"
 	@echo "  build-all      Build for all platforms"
 	@echo "  release        Create release packages for all platforms"
 	@echo "  version        Show current version"

README.md

@@ -110,7 +110,8 @@ CGO_ENABLED=0 go build -ldflags="-s -w -X main.Version=$VERSION" -o bin/qfs ./cm
 **Makefile команды:**
 ```bash
 make build-release   # Оптимизированная сборка с версией
-make build-all       # Сборка для всех платформ (Linux, macOS)
+make build-all       # Сборка для всех платформ (Linux, macOS, Windows)
+make build-windows   # Только для Windows
 make run             # Запуск dev сервера
 make test            # Запуск тестов
 make clean           # Очистка bin/

RELEASE_v0.2.6.md

@@ -0,0 +1,60 @@
+## Release v0.2.6 - Build & Release Improvements
+
+Minor release focused on developer experience and release automation.
+
+### Changes
+
+**Build System**
+- 🎯 Renamed binary from `quoteforge` to `qfs` (shorter, easier to type)
+- 🏷️ Added `-version` flag to display build version
+- 📦 Added Makefile with build targets for all platforms
+- 🚀 Added automated release script for multi-platform binaries
+
+**New Commands**
+```bash
+make build-release   # Optimized build with version info
+make build-all       # Build for Linux + macOS (Intel/ARM)
+make release         # Create release packages with checksums
+./bin/qfs -version   # Show version
+```
+
+**Release Artifacts**
+- Linux AMD64
+- macOS Intel (AMD64)
+- macOS Apple Silicon (ARM64)
+- Windows AMD64
+- SHA256 checksums
+
+### Installation
+
+Download the appropriate binary for your platform:
+```bash
+# Linux
+wget https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.6/qfs-v0.2.6-linux-amd64.tar.gz
+tar -xzf qfs-v0.2.6-linux-amd64.tar.gz
+chmod +x qfs-linux-amd64
+./qfs-linux-amd64
+
+# macOS Intel
+curl -L -O https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.6/qfs-v0.2.6-darwin-amd64.tar.gz
+tar -xzf qfs-v0.2.6-darwin-amd64.tar.gz
+chmod +x qfs-darwin-amd64
+./qfs-darwin-amd64
+
+# macOS Apple Silicon
+curl -L -O https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.6/qfs-v0.2.6-darwin-arm64.tar.gz
+tar -xzf qfs-v0.2.6-darwin-arm64.tar.gz
+chmod +x qfs-darwin-arm64
+./qfs-darwin-arm64
+
+# Windows
+curl -L -O https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.6/qfs-v0.2.6-windows-amd64.zip
+unzip qfs-v0.2.6-windows-amd64.zip
+qfs-windows-amd64.exe
+```
+
+### Breaking Changes
+None - fully backward compatible with v0.2.5
+
+### Full Changelog
+https://git.mchus.pro/mchus/QuoteForge/compare/v0.2.5...v0.2.6

scripts/release.sh

@@ -57,11 +57,19 @@ if [ -f "bin/qfs-darwin-arm64" ]; then
     echo -e "${GREEN}  ✓ qfs-${VERSION}-darwin-arm64.tar.gz${NC}"
 fi
 
+# Windows AMD64
+if [ -f "bin/qfs-windows-amd64.exe" ]; then
+    cd bin
+    zip -q "../${RELEASE_DIR}/qfs-${VERSION}-windows-amd64.zip" qfs-windows-amd64.exe
+    cd ..
+    echo -e "${GREEN}  ✓ qfs-${VERSION}-windows-amd64.zip${NC}"
+fi
+
 # Generate checksums
 echo ""
 echo -e "${YELLOW}→ Generating checksums...${NC}"
 cd "${RELEASE_DIR}"
-shasum -a 256 *.tar.gz > SHA256SUMS.txt
+shasum -a 256 *.tar.gz *.zip > SHA256SUMS.txt 2>/dev/null || shasum -a 256 * | grep -v SHA256SUMS > SHA256SUMS.txt
 cd ../..
 echo -e "${GREEN}  ✓ SHA256SUMS.txt${NC}"