feat: implement real uptime monitoring, alerts, admin dashboard, billing & usage tracking

- Uptime service: real HTTP HEAD checks with response time tracking
- Alert engine: evaluates scan results, auto-resolves recovered alerts
- Notifications: Resend email + webhook delivery
- Admin dashboard: system stats, user CRUD, org management (role-protected)
- Billing: tier limits (free/starter/pro/enterprise), usage tracking API
- Competitor analysis: real Lighthouse comparison + response time
- Tests: 11 backend + 11 frontend = 22 total tests passing
- Database: added competitor_metrics, alert_configurations tables

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

website-monitoring-frontend/.github/workflows/cron-scan.yml

@@ -1,36 +1,67 @@
-name: Lighthouse Scan Cron Job
+name: Lighthouse Scan & Uptime Cron
 
 on:
   schedule:
-    - cron: '0 */6 * * *'  # Every 6 hours
-  workflow_dispatch:  # Allow manual triggering
+    - cron: '0 */6 * * *'    # Lighthouse scans every 6 hours
+    - cron: '*/5 * * * *'    # Uptime checks every 5 minutes
+  workflow_dispatch:
+    inputs:
+      mode:
+        description: 'Job to run'
+        required: true
+        default: 'all'
+        type: choice
+        options:
+          - all
+          - scan
+          - uptime
 
 jobs:
-  scan:
+  uptime:
     runs-on: ubuntu-latest
+    if: github.event.schedule == '*/5 * * * *' || github.event.inputs.mode == 'uptime' || github.event.inputs.mode == 'all'
     steps:
-      - name: Trigger Scan
+      - name: Run Uptime Checks
         run: |
-          # Get the deployment URL from environment or use a default
           DEPLOYMENT_URL="${DEPLOYMENT_URL:-https://your-domain.com}"
+          echo "Running uptime checks at: $DEPLOYMENT_URL/api/cron/uptime"
           
-          echo "Triggering scan at: $DEPLOYMENT_URL/api/cron/scan?mode=all"
-          
-          # Make the API call
-          response=$(curl -s -w "\n%{http_code}" -X POST "$DEPLOYMENT_URL/api/cron/scan?mode=all")
-          
-          # Extract response body and status code
+          response=$(curl -s -w "\n%{http_code}" "$DEPLOYMENT_URL/api/cron/uptime")
           http_code=$(echo "$response" | tail -n1)
           response_body=$(echo "$response" | head -n -1)
           
-          echo "Response Status: $http_code"
-          echo "Response Body: $response_body"
+          echo "Status: $http_code"
+          echo "Body: $response_body"
+          
+          if [ "$http_code" -eq 200 ]; then
+            echo "✅ Uptime checks completed"
+          else
+            echo "❌ Uptime checks failed: $http_code"
+            exit 1
+          fi
+        env:
+          DEPLOYMENT_URL: ${{ secrets.DEPLOYMENT_URL }}
+
+  scan:
+    runs-on: ubuntu-latest
+    if: github.event.schedule == '0 */6 * * *' || github.event.inputs.mode == 'scan' || github.event.inputs.mode == 'all'
+    steps:
+      - name: Trigger Lighthouse Scan
+        run: |
+          DEPLOYMENT_URL="${DEPLOYMENT_URL:-https://your-domain.com}"
+          echo "Triggering scan at: $DEPLOYMENT_URL/api/cron/scan?mode=all"
+          
+          response=$(curl -s -w "\n%{http_code}" -X POST "$DEPLOYMENT_URL/api/cron/scan?mode=all")
+          http_code=$(echo "$response" | tail -n1)
+          response_body=$(echo "$response" | head -n -1)
+          
+          echo "Status: $http_code"
+          echo "Body: $response_body"
           
-          # Check if the request was successful
           if [ "$http_code" -eq 200 ]; then
             echo "✅ Scan triggered successfully"
           else
-            echo "❌ Failed to trigger scan. Status: $http_code"
+            echo "❌ Failed to trigger scan: $http_code"
             exit 1
           fi
         env: