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.

app/utils/s3Upload.utill.js

@@ -15,8 +15,7 @@ const { getSignedUrl } = require("@aws-sdk/s3-request-presigner");
 const s3 = require("../config/s3.config");
 const { v4: uuidv4 } = require("uuid");
 const path = require("path");
-const createRedisConnection = require("../config/redis.config");
-const redis = createRedisConnection();
+const redis = require("../config/redisClient");
 const { log } = require("./consoleLog.utill");
 
 // Upload + return key (BEST PRACTICE)