feat: stabilize API startup and lifecycle management

- Refactor server initialization to separate concerns and improve error handling.
- Implement centralized environment validation using Zod.
- Introduce database, Redis, and queue lifecycle management.
- Add health check endpoints for liveness and readiness.
- Enhance error handling middleware for better response structure.
- Implement rate limiting for API endpoints.
- Add request ID middleware for traceability.
- Create Sequelize CLI configuration and baseline migration for schema management.
- Establish CI workflow with Gitea for testing and syntax checks.
- Document foundational changes and migration strategy in PHASE_0_FOUNDATION_STABILIZATION.md.
- Add Docker Compose configuration for local development and testing.
- Implement unit and integration tests for critical functionality.

cron/index.js

@@ -14,8 +14,14 @@ const startCleanInactiveNotificationsCron = require("./notificationCleaning.cron
 function startAllCrons() {
   console.log("Starting Cron Jobs...");
 
-  startCleanInactiveNotificationsCron();
+  const tasks = [startCleanInactiveNotificationsCron()];
 
+  return async () => {
+    for (const task of tasks) {
+      task.stop();
+      if (typeof task.destroy === "function") task.destroy();
+    }
+  };
 }
 
-module.exports = startAllCrons;
+module.exports = startAllCrons;