README update - switch_case group

.github/workflows/build.yml

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+name: Build
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    name: Build and analyze
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # Shallow clones should be disabled for a better relevancy of analysis
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: 25
+          distribution: "zulu" # Alternative distribution options are available.
+      - name: Cache SonarQube packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.sonar/cache
+          key: ${{ runner.os }}-sonar
+          restore-keys: ${{ runner.os }}-sonar
+      - name: Cache Maven packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.m2
+          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+          restore-keys: ${{ runner.os }}-m2
+      - name: Build and analyze
+        run: mvn -B verify
+

.gitignore

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+# ==========================================
+# Credentials, Secrets, and Environment Files
+# ==========================================
+.env
+.env.*
+!.env.example
+*.pem
+*.key
+*.cert
+secrets/
+credentials.json
+
+# ==========================================
+# Java / Spring Boot (Maven/Gradle)
+# ==========================================
+target/
+**/target/
+build/
+**/build/
+*.class
+*.jar
+*.war
+*.ear
+*.iml
+*.lst
+
+# ==========================================
+# Frontend (Node.js / Next.js)
+# ==========================================
+node_modules/
+**/node_modules/
+.next/
+**/.next/
+out/
+**/out/
+dist/
+**/dist/
+.vercel/
+*.tsbuildinfo
+next-env.d.ts
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# ==========================================
+# Docker & Local Database Volumes
+# ==========================================
+keycloak-data/
+postgres-data/
+db-data/
+
+# ==========================================
+# IDEs, Editors, and OS files
+# ==========================================
+.idea/
+.vscode/
+*.swp
+*.swo
+*.iws
+*.ipr
+.classpath
+.project
+.settings/
+.nb-gradle/
+nbproject/
+nbbuild/
+.sts4-cache/
+.DS_Store
+Thumbs.db
+
+# ==========================================
+# SonarQube / JaCoCo
+# ==========================================
+.sonar/
+**/.sonar/
+**/jacoco.exec
+
+.agent/

backend/.dockerignore

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+target/
+.idea/
+*.iml
+.env

backend/Dockerfile

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+FROM maven:3.9-eclipse-temurin-25-alpine AS build
+WORKDIR /app
+COPY pom.xml .
+RUN mvn dependency:go-offline -B
+
+COPY src src
+RUN mvn clean package -DskipTests
+
+FROM eclipse-temurin:25-jre-alpine
+WORKDIR /app
+COPY --from=build /app/target/*.jar app.jar
+EXPOSE 8080
+ENTRYPOINT ["java", "--enable-preview", "-jar", "app.jar"]