refactor: remove frontend and keep backend-only build

Makefile

@@ -1,6 +1,14 @@
-.PHONY: up down status
+.PHONY: up down status backend-build build release
 
 COMPOSE_CMD := $(shell if command -v docker >/dev/null 2>&1 && docker compose version >/dev/null 2>&1; then echo "docker compose"; elif command -v docker-compose >/dev/null 2>&1; then echo "docker-compose"; fi)
+VERSION := 1.0.0
+JAR_NAME := svn-log-tool-$(VERSION)-jar-with-dependencies.jar
+
+backend-build:
+	@cd backend && mvn clean package -DskipTests
+
+build:
+	@cd backend && mvn clean package -DskipTests
 
 up:
 	@if [ -z "$(COMPOSE_CMD)" ]; then echo "docker compose/docker-compose not found"; exit 1; fi
@@ -15,3 +23,17 @@ status:
 	@if [ -z "$(COMPOSE_CMD)" ]; then echo "docker compose/docker-compose not found"; exit 1; fi
 	@$(COMPOSE_CMD) ps
 	@echo "Access URL: http://localhost:18088"
+
+release:
+	@echo "Building release packages..."
+	@cd backend && mvn clean package -DskipTests
+	@echo "Copying jar to release directories..."
+	@cp backend/target/$(JAR_NAME) release/windows/
+	@cp backend/target/$(JAR_NAME) release/unix/
+	@echo "Creating release archives..."
+	@cd release/windows && zip -r ../svn-log-tool-$(VERSION)-windows.zip * && cd ../..
+	@cd release/unix && tar czf ../svn-log-tool-$(VERSION)-unix.tar.gz * && cd ../..
+	@cd release/docker && cp ../../Dockerfile . && cp docker-compose.yml docker-compose.yml.release && tar czf ../svn-log-tool-$(VERSION)-docker.tar.gz * && rm Dockerfile docker-compose.yml.release && cd ../..
+	@echo "Release packages created in release/ directory:"
+	@ls -lh release/*.zip release/*.tar.gz 2>/dev/null || true
+	@echo "Done!"