booklore v2: embed frontend, bump Java to 25, remove nginx

Upgrade Java from 21 to 25 and add embedding of the built frontend into the backend resources so the Spring Boot app serves static files. Build steps now skip tests (gradle -x test). Remove nginx install/configuration paths: install script no longer installs or configures nginx; update script disables and purges nginx if active. Add default SERVER_PORT=6060 to the .env (or append if missing). Update systemd unit ExecStart to include JVM tuning flags and reload systemd. Misc: adjust start/reload steps to reflect nginx removal and clean up previous backup dirs.

ct/booklore.sh

@@ -30,7 +30,7 @@ function update_script() {
   fi
 
   if check_for_gh_release "booklore" "booklore-app/BookLore"; then
-    JAVA_VERSION="21" setup_java
+    JAVA_VERSION="25" setup_java
     NODE_VERSION="22" setup_nodejs
     setup_mariadb
     setup_yq
@@ -60,11 +60,16 @@ function update_script() {
     $STD npm run build --configuration=production
     msg_ok "Built Frontend"
 
+    msg_info "Embedding Frontend into Backend"
+    mkdir -p /opt/booklore/booklore-api/src/main/resources/static
+    cp -r /opt/booklore/booklore-ui/dist/booklore/browser/* /opt/booklore/booklore-api/src/main/resources/static/
+    msg_ok "Embedded Frontend into Backend"
+
     msg_info "Building Backend"
     cd /opt/booklore/booklore-api
     APP_VERSION=$(get_latest_github_release "booklore-app/BookLore")
     yq eval ".app.version = \"${APP_VERSION}\"" -i src/main/resources/application.yaml
-    $STD ./gradlew clean build --no-daemon
+    $STD ./gradlew clean build -x test --no-daemon
     mkdir -p /opt/booklore/dist
     JAR_PATH=$(find /opt/booklore/booklore-api/build/libs -maxdepth 1 -type f -name "booklore-api-*.jar" ! -name "*plain*" | head -n1)
     if [[ -z "$JAR_PATH" ]]; then
@@ -74,9 +79,22 @@ function update_script() {
     cp "$JAR_PATH" /opt/booklore/dist/app.jar
     msg_ok "Built Backend"
 
+    if systemctl is-active --quiet nginx 2>/dev/null; then
+      msg_info "Removing Nginx (no longer needed)"
+      systemctl disable --now nginx
+      $STD apt-get purge -y nginx nginx-common
+      msg_ok "Removed Nginx"
+    fi
+
+    if ! grep -q "^SERVER_PORT=" /opt/booklore_storage/.env 2>/dev/null; then
+      echo "SERVER_PORT=6060" >>/opt/booklore_storage/.env
+    fi
+
+    sed -i 's|ExecStart=/usr/bin/java -jar|ExecStart=/usr/bin/java -XX:+UseG1GC -XX:+UseStringDeduplication -XX:+UseCompactObjectHeaders -jar|' /etc/systemd/system/booklore.service
+    systemctl daemon-reload
+
     msg_info "Starting Service"
     systemctl start booklore
-    systemctl reload nginx
     rm -rf /opt/booklore_bak
     msg_ok "Started Service"
     msg_ok "Updated successfully!"