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.

ai-server/index.mjs

@@ -60,6 +60,7 @@ let pullProgress = { status: "idle", progress: 0, message: "" }
 // ── Job loading ─────────────────────────────────────────────────
 // Loads job categories from a JSONL file (one JSON object per line).
 // Used as context for the AI sales coach chat responses.
+/** Load job categories from the JSONL file at JOBS_PATH. Returns an array of parsed job objects. */
 function loadJobs() {
   try {
     const content = fs.readFileSync(JOBS_PATH, "utf-8")
@@ -86,6 +87,7 @@ function loadJobs() {
 // ── ai.md management ────────────────────────────────────────────
 // ai.md is a Markdown file containing system instructions for the AI.
 // It can be read, written, or appended to via the API.
+/** Read the full contents of ai.md. Returns empty string if the file doesn't exist yet. */
 function readInstructions() {
   try {
     return fs.readFileSync(AI_MD_PATH, "utf-8")
@@ -94,11 +96,13 @@ function readInstructions() {
   }
 }
 
+/** Overwrite ai.md with new content. Returns the content that was written. */
 function writeInstructions(content) {
   fs.writeFileSync(AI_MD_PATH, content, "utf-8")
   return content
 }
 
+/** Append a timestamped entry to the ## Improvement Log section of ai.md. Creates the section if it doesn't exist. */
 function appendToImprovementLog(entry) {
   // Adds a timestamped entry to the ## Improvement Log section of ai.md
   const current = readInstructions()
@@ -153,6 +157,7 @@ async function scrapeFacebook() {
   }
 }
 
+/** Format scraped Facebook leads into a human-readable Markdown string for the AI chat response. */
 function formatLeads(leads) {
   if (!leads || leads.length === 0) return "No leads found from the latest scrape."
   let output = `**${leads.length} leads found:**\n\n`
@@ -239,6 +244,7 @@ Provide concise, actionable sales advice. When asked about a specific job catego
 // ── PG pool (lazy init) ────────────────────────────────────────
 // PostgreSQL connection pool for storing conversation history.
 // Lazy-initialized so the server starts even without a DB.
+/** Lazy-initialize the PostgreSQL connection pool. Non-blocking — server works without a database. */
 let pgPool = null
 async function initPg() {
   if (!DATABASE_URL) return
@@ -255,11 +261,13 @@ async function initPg() {
 // ── Request router ─────────────────────────────────────────────
 const loadedJobs = loadJobs()
 
+/** Write a JSON response with the given HTTP status code. */
 function sendJSON(res, status, data) {
   res.writeHead(status, { "Content-Type": "application/json" })
   res.end(JSON.stringify(data))
 }
 
+/** Parse the JSON body of an incoming HTTP request. */
 function parseBody(req) {
   return new Promise((resolve, reject) => {
     let body = ""
@@ -275,6 +283,7 @@ function parseBody(req) {
   })
 }
 
+/** Parse a request URL into its pathname and search params. Falls back to localhost if no Host header is present. */
 function parseURL(req) {
   const url = new URL(req.url, `http://${req.headers.host || "localhost"}`)
   return { pathname: url.pathname, searchParams: url.searchParams }