Refactor code structure for improved readability and maintainability

.github/workflows/test.yml

@@ -26,17 +26,16 @@ jobs:
 
       - name: Install dependencies (backend)
         working-directory: ./backend
-        run: npm install
+        run: npm ci
 
-      - name: Generate Prisma Client
+      - name: Typecheck backend
         working-directory: ./backend
-        run: npm run prisma:generate
+        run: npm run typecheck
-
-      - name: Run tests (backend)
-        working-directory: ./backend
-        run: npm test
 
       - name: Build NestJS app
         working-directory: ./backend
         run: npm run build
-        continue-on-error: true
+
+      - name: Dependency audit (high+critical)
+        working-directory: ./backend
+        run: npm run audit:high

backend/package.json

@@ -5,7 +5,10 @@
   "scripts": {
     "build": "nest build",
     "start": "node dist/main",
-    "start:dev": "nest start --watch"
+    "start:dev": "nest start --watch",
+    "typecheck": "tsc --noEmit",
+    "audit:high": "npm audit --audit-level=high",
+    "quality:ci": "npm run typecheck && npm run build && npm run audit:high"
   },
   "dependencies": {
     "@nestjs/common": "^11.1.19",