feat: Enhance provider components with detailed documentation and comments

- Added comprehensive comments and JSDoc-style documentation to NotificationProvider, ThemeProvider, UserProvider, and WebsiteThemeProvider for better clarity and maintainability.
- Improved type definitions in index.ts for better code understanding and usage.
- Introduced Docker support with Dockerfiles for various services including AI server, signaling server, and browser-use service.
- Created a docker-compose.yml file to orchestrate multiple services including PostgreSQL, AI, scraper, and frontend.
- Added a startup guide (startup.txt) for setting up the CRM environment on Ubuntu with Docker.
- Included a .dockerignore file to exclude unnecessary files from Docker builds.

src/app/page.tsx

@@ -1,5 +1,25 @@
+// ───────────────────────────────────────────────
+// Root Page (/)
+// ───────────────────────────────────────────────
+// Route: /
+// Purpose: Top-level entry point for the app.
+//   Immediately redirects authenticated users to
+//   /dashboard. Unauthenticated users are caught
+//   by middleware and redirected to /login.
+// Layout: No layout — pure redirect.
+// ───────────────────────────────────────────────
+
 import { redirect } from "next/navigation"
 
+/**
+ * RootPage
+ * ──────────
+ * The default route handler for `/`. Immediately
+ * redirects to the dashboard. Auth guarding is
+ * handled by src/middleware.ts.
+ *
+ * @returns Never — always calls redirect().
+ */
 export default function RootPage() {
   redirect("/dashboard")
 }