Implement email notifications, refactor ticket logic, and enhance tests

.env.example

@@ -0,0 +1,7 @@
+# Database connection
+DB_URL=jdbc:postgresql://localhost:5432/ticket_tracker
+DB_USER=ticket_user
+DB_PASSWORD=change_me
+
+# Resend email API
+RESEND_API_KEY=your_resend_api_key_here

.github/workflows/ci.yml

@@ -10,6 +10,27 @@ jobs:
   build:
     runs-on: ubuntu-latest
 
+    services:
+      postgres:
+        image: postgres:16
+        env:
+          POSTGRES_USER: ticket_user
+          POSTGRES_PASSWORD: ticket_password
+          POSTGRES_DB: ticket_tracker
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd="pg_isready -U ticket_user -d ticket_tracker"
+          --health-interval=10s
+          --health-timeout=5s
+          --health-retries=5
+
+    env:
+      RESEND_API_KEY: dummy-ci-key
+      DB_URL: jdbc:postgresql://localhost:5432/ticket_tracker
+      DB_USER: ticket_user
+      DB_PASSWORD: ticket_password
+
     steps:
       - uses: actions/checkout@v4
 
@@ -19,4 +40,4 @@ jobs:
           java-version: '25'
           cache: maven
 
-      - run: mvn clean verify
+      - run: mvn clean verify

.gitignore

@@ -36,3 +36,8 @@ build/
 ### System Files ###
 .DS_Store
 Thumbs.db
+
+### Environment ###
+.env
+.env.local
+!.env.example