Add GitHub Action for automated security scanning

.github/workflows/security-scan.yml

@@ -0,0 +1,38 @@
+name: Security Scan & Auto-Guardian
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  scan:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.11'
+        
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        if [ -f core_system/requirements.txt ]; then pip install -r core_system/requirements.txt; fi
+        pip install bandit safety
+        
+    - name: Run Security Scan (Bandit)
+      run: |
+        bandit -r core_system/ -f json -o security-report.json || true
+        
+    - name: Run Dependency Check (Safety)
+      run: |
+        safety check || true
+        
+    - name: Upload Scan Results
+      uses: actions/upload-artifact@v3
+      with:
+        name: security-reports
+        path: security-report.json