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/components/layout/crm-icon.tsx

@@ -1,5 +1,12 @@
+// ── Layout: CRM Icon SVG Component ──
+// Decorative SVG icon representing the CRM, with dark/light mode fill adaptation.
+
 "use client"
 
+/**
+ * CrmIcon — a stylized SVG icon for the CRM brand.
+ * Uses CSS-driven fills that switch between light and dark mode.
+ */
 export function CrmIcon() {
   return (
     <svg