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/notes/note-timeline.tsx

@@ -1,3 +1,7 @@
+// ── Notes: Note Timeline Component ──
+// Displays a list of notes for a lead in a vertical timeline layout.
+// Each entry shows author avatar, name, role, timestamp, note content, and edit/delete actions.
+
 "use client"
 
 import { motion } from "framer-motion"
@@ -13,6 +17,11 @@ interface NoteTimelineProps {
   notes: Note[]
 }
 
+/**
+ * NoteTimeline — renders notes in a time-ordered vertical timeline.
+ * Shows an EmptyState when there are no notes. Each note has a connecting line
+ * between entries and inline edit/delete buttons.
+ */
 export function NoteTimeline({ notes }: NoteTimelineProps) {
   if (notes.length === 0) {
     return (