Admin Chat for WhatsApp Customers

I need a streamlined WhatsApp admin chat system that lets my support team quickly respond to customer inquiries in one place. Core features I’m looking for:

• Real-time two-way messaging so we can answer questions the moment they arrive.
• An easy way to pull and display each customer’s order status and recent updates inside the chat window, saving us from switching tabs.
• A broadcast option limited to our existing customers, so we can occasionally send promotions without spamming new leads.

The solution should connect to the official WhatsApp Business API (or an approved third-party platform) and present a clean web dashboard where multiple agents can log in, tag conversations, search chat history, and see basic analytics on response times.

I’m open to PHP, Node.js, Python, or a no-code SaaS integration—whichever you feel delivers the most stable, scalable result. Please include:

1. A brief outline of the tech stack you propose.
2. Estimated timeline for an MVP that covers the three bullets above.
3. Any past WhatsApp automation or customer service chat work you can show.

Testing, basic documentation, and a quick walkthrough video at hand-off will complete the project.