Simplify and enhance CI workflows and code quality checks

.github/dependabot.yml

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+version: 2
+updates:
+  # Maven dependencies
+  - package-ecosystem: "maven"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "06:00"
+      timezone: "Europe/Berlin"
+    open-pull-requests-limit: 10
+    reviewers:
+      - "aether-framework/maintainers"
+    labels:
+      - "dependencies"
+      - "java"
+    commit-message:
+      prefix: "deps"
+      include: "scope"
+    groups:
+      jackson:
+        patterns:
+          - "com.fasterxml.jackson*"
+        update-types:
+          - "minor"
+          - "patch"
+      spring:
+        patterns:
+          - "org.springframework*"
+        update-types:
+          - "minor"
+          - "patch"
+      testing:
+        patterns:
+          - "org.junit*"
+          - "org.assertj*"
+        update-types:
+          - "minor"
+          - "patch"
+      maven-plugins:
+        patterns:
+          - "org.apache.maven.plugins:maven-*"
+          - "org.codehaus.mojo:*"
+        update-types:
+          - "minor"
+          - "patch"
+      build-plugins:
+        patterns:
+          - "org.sonatype.central:*"
+          - "org.owasp:*"
+          - "org.cyclonedx:*"
+          - "org.jacoco:*"
+          - "com.github.spotbugs:*"
+        update-types:
+          - "minor"
+          - "patch"
+
+  # GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "06:00"
+      timezone: "Europe/Berlin"
+    open-pull-requests-limit: 5
+    labels:
+      - "dependencies"
+      - "github-actions"
+    commit-message:
+      prefix: "ci"
+      include: "scope"

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: [ main, develop, 'feature/**' ]
+  pull_request:
+    branches: [ main, develop ]
+
+permissions:
+  contents: read
+  checks: write
+  pull-requests: write
+
+jobs:
+  build:
+    name: Build & Test (Java ${{ matrix.java }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [ '17', '21' ]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      - name: Set up JDK ${{ matrix.java }}
+        uses: actions/setup-java@v4
+        with:
+          java-version: ${{ matrix.java }}
+          distribution: 'temurin'
+          cache: 'maven'
+
+      - name: Build and test with Maven
+        run: mvn -B clean verify -Pqa -Ddependency-check.skip=true
+
+      - name: Upload test results
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: test-results-java-${{ matrix.java }}
+          path: |
+            **/target/surefire-reports/
+            **/target/failsafe-reports/
+          retention-days: 7
+
+      - name: Upload coverage report
+        uses: actions/upload-artifact@v4
+        if: matrix.java == '21'
+        with:
+          name: coverage-report
+          path: |
+            **/target/site/jacoco/
+            **/target/jacoco.exec
+          retention-days: 7
+
+      - name: Publish Test Report
+        uses: mikepenz/action-junit-report@v4
+        if: always()
+        with:
+          report_paths: '**/target/*-reports/TEST-*.xml'
+          check_name: Test Report (Java ${{ matrix.java }})
+
+  quality:
+    name: Code Quality Analysis
+    runs-on: ubuntu-latest
+    needs: build
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+          cache: 'maven'
+
+      - name: Install artifacts for analysis
+        run: mvn -B -Ddependency-check.skip=true clean install -Pqa -DskipTests
+
+      - name: Run SpotBugs analysis
+        run: mvn -B spotbugs:check -Pqa -Ddependency-check.skip=true
+        continue-on-error: true
+
+      - name: Run Checkstyle analysis
+        run: mvn -B checkstyle:check -Pqa -Ddependency-check.skip=true
+        continue-on-error: true
+
+      - name: Upload SpotBugs report
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: spotbugs-report
+          path: '**/target/spotbugsXml.xml'
+          retention-days: 7
+
+      - name: Upload Checkstyle report
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: checkstyle-report
+          path: '**/target/checkstyle-result.xml'
+          retention-days: 7
+
+  dependency-check:
+    name: OWASP Dependency Check
+    runs-on: ubuntu-latest
+    needs: build
+    env:
+      NVD_API_KEY: ${{ secrets.NVD_API_KEY }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+          cache: 'maven'
+
+      - name: Cache Dependency-Check DB
+        uses: actions/cache@v4
+        with:
+          path: ~/.m2/repository/org/owasp/dependency-check-data
+          key: depcheck-${{ runner.os }}-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            depcheck-${{ runner.os }}-
+
+      - name: Run OWASP Dependency Check
+        run: mvn -B dependency-check:aggregate -Pqa
+        continue-on-error: true
+
+      - name: Upload Dependency Check report
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: dependency-check-report
+          path: |
+            target/dependency-check-report.html
+          retention-days: 30

.github/workflows/codeql.yml

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+name: CodeQL Security Analysis
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main, develop ]
+  schedule:
+    - cron: '0 0 * * 1' # Monday 00:00 UTC
+
+permissions:
+  contents: read
+  security-events: write
+  actions: read
+
+jobs:
+  analyze:
+    name: Analyze (java-kotlin)
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+          cache: 'maven'
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: java-kotlin
+          build-mode: manual
+          queries: security-extended,security-and-quality
+
+      - name: Build with Maven
+        run: mvn -B clean compile -DskipTests
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:java-kotlin"

.github/workflows/dependency-review.yml

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+name: Dependency Review
+
+on:
+  pull_request:
+    branches: [ main, develop ]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  dependency-review:
+    name: Dependency Review
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      - name: Dependency Review
+        uses: actions/dependency-review-action@v4
+        with:
+          fail-on-severity: high
+          deny-licenses: GPL-3.0-only, GPL-3.0-or-later, AGPL-3.0-only, AGPL-3.0-or-later
+          comment-summary-in-pr: always
+          warn-only: false