chore: merge main into migrate/vite-6 - resolve conflicts

Resolved conflicts:
- .github/workflows/ci.yml: Updated actions/checkout from v4 to v6
- pom.xml: Merged OWASP dependency-check-maven update
- package.json: Kept our testing infrastructure
- package-lock.json: Regenerated after merge
- vite.config.ts: Kept our test configuration

All conflicts resolved in favor of keeping testing infrastructure while adopting dependency updates from main.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: 2 people

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
       backend: ${{ steps.filter.outputs.backend }}
       frontend: ${{ steps.filter.outputs.frontend }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: dorny/paths-filter@v3
         id: filter
@@ -51,7 +51,6 @@ jobs:
       JWT_SECRET: test_jwt_secret_key_for_ci_environments_only_do_not_use_in_production
 
     steps:
-      - uses: actions/checkout@v4
 
       - name: Set up JDK 25
         uses: actions/setup-java@v5
@@ -101,10 +100,10 @@ jobs:
         working-directory: coupon-system-frontend
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Node.js 20
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '20'
           cache: 'npm'
@@ -142,7 +141,7 @@ jobs:
       JWT_SECRET: test_jwt_secret_key_for_ci_environments_only_do_not_use_in_production
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up JDK 25
         uses: actions/setup-java@v5
@@ -191,10 +190,10 @@ jobs:
         working-directory: coupon-system-frontend
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Node.js 20
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '20'
           cache: 'npm'
@@ -229,7 +228,7 @@ jobs:
     if: github.ref == 'refs/heads/main' && needs.detect-changes.outputs.backend == 'true'
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up JDK 25
         uses: actions/setup-java@v5

pom.xml

@@ -162,7 +162,7 @@
             <plugin>
                 <groupId>org.owasp</groupId>
                 <artifactId>dependency-check-maven</artifactId>
-                <version>12.1.3</version>
+                <version>12.2.0</version>
                 <configuration>
                     <!-- Skip by default for faster local builds -->
                     <!-- Run with: mvn verify -Dowasp.skip=false -->