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/routes/docs.routes.js

@@ -6,6 +6,7 @@ const express = require("express");
 const fs = require("fs");
 const path = require("path");
 const docsSession = require("../middleware/docsSession.middleware");
+const { sensitiveLimiter } = require("../middleware/rateLimit.middleware");
 
 const router = express.Router();
 
@@ -47,7 +48,7 @@ router.get("/view/:file", docsSession, (req, res) => {
 });
 
 // Docs login (simple)
-router.post("/login", (req, res) => {
+router.post("/login", sensitiveLimiter, (req, res) => {
   const { username, password } = req.body;
 
   if (