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/api/settings/company/route.ts

@@ -1,7 +1,16 @@
+// ── Settings: Company ───────────────────────────────────────────────────────
+// GET   /api/settings/company  — Get company-wide settings
+// PATCH /api/settings/company  — Update company settings
+//
+// Auth: admin/super_admin only
+// Falls back to sensible defaults if no row exists in company_settings.
+
 import { NextRequest, NextResponse } from "next/server"
 import { getSessionUser } from "@/lib/auth"
 import { query } from "@/lib/db"
 
+// ── GET ──────────────────────────────────────────────────────────────────────
+
 export async function GET() {
   try {
     const user = await getSessionUser()
@@ -36,6 +45,8 @@ export async function GET() {
   }
 }
 
+// ── PATCH ────────────────────────────────────────────────────────────────────
+
 export async function PATCH(request: NextRequest) {
   try {
     const user = await getSessionUser()
@@ -46,6 +57,7 @@ export async function PATCH(request: NextRequest) {
 
     const body = await request.json()
 
+    // Attempt update on existing row; if no row exists, insert one
     const result = await query(
       `UPDATE company_settings SET
         company_name = $1, company_email = $2, company_phone = $3,