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.

scripts/precheck.mjs

@@ -12,6 +12,7 @@ const __dirname = dirname(fileURLToPath(import.meta.url))
 const root = resolve(__dirname, "..")
 
 try {
+  // Read package.json and check each dependency's package.json in node_modules
   const pkg = JSON.parse(readFileSync(resolve(root, "package.json"), "utf8"))
   const allDeps = { ...pkg.dependencies, ...pkg.devDependencies }
 
@@ -45,6 +46,7 @@ if (platform() === "win32") {
       const out = execSync(`netstat -ano | findstr "LISTENING" | findstr ":${port} "`, { encoding: "utf8", timeout: 5000 })
       const lines = out.trim().split("\n").filter(Boolean)
       for (const line of lines) {
+        // Parse the last column of netstat output — the PID
         const parts = line.trim().split(/\s+/)
         const pid = parts[parts.length - 1]
         if (pid) {