chore: setup automated testing pipeline and ci/cd

- Installed Vitest, Supertest, and React Testing Library
- Added mongodb-memory-server for isolated backend testing
- Configured frontend jsdom environment
- Wrote 27 backend tests verifying Auth, Community, and Report logic
- Wrote 20 frontend component tests verifying UI validation, routing, and mock sockets
- Created GitHub Actions workflow for automated CI/CD testing on push

Author: Player1205

.github/workflows/ci.yml

@@ -0,0 +1,53 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  test-frontend:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./client
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Use Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20.x'
+        cache: 'npm'
+        cache-dependency-path: './client/package-lock.json'
+    
+    - name: Install dependencies
+      run: npm ci
+
+    - name: Run Tests
+      run: npm run test
+
+    - name: Build
+      run: npm run build
+
+  test-backend:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./server
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Use Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20.x'
+        cache: 'npm'
+        cache-dependency-path: './server/package-lock.json'
+    
+    - name: Install dependencies
+      run: npm ci
+
+    - name: Run Tests
+      run: npm run test