feat: Add Chatwoot Agent Bot prototype and FAQ knowledge base

- Created chatwoot-agent-bot/ with Node.js webhook server
- Bot detects intent (greeting, billing, technical, features, account)
- Auto-responds from FAQ knowledge base or escalates to human
- FAQ-KB.md: Living knowledge base that grows with customer questions
- CHATWOOT-SETUP.md: Complete deployment and configuration guide
- Supports Telegram notifications on escalation
- Bot runs on port 3001, ready for Chatwoot webhook integration

FAQ-KB.md

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+# FAQ & Knowledge Base
+
+*Last updated: 2026-04-01*
+
+This document serves as the knowledge base for customer support. It grows organically based on customer questions and interactions.
+
+---
+
+## 📚 Table of Contents
+
+- [Getting Started](#getting-started)
+- [Billing & Pricing](#billing--pricing)
+- [Features & Usage](#features--usage)
+- [Technical & Integration](#technical--integration)
+- [Account Management](#account-management)
+- [Troubleshooting](#troubleshooting)
+
+---
+
+## Getting Started
+
+*No entries yet - will populate from customer questions*
+
+---
+
+## Billing & Pricing
+
+*No entries yet - will populate from customer questions*
+
+---
+
+## Features & Usage
+
+*No entries yet - will populate from customer questions*
+
+---
+
+## Technical & Integration
+
+*No entries yet - will populate from customer questions*
+
+---
+
+## Account Management
+
+*No entries yet - will populate from customer questions*
+
+---
+
+## Troubleshooting
+
+*No entries yet - will populate from customer questions*
+
+---
+
+## 📝 How This Works
+
+This knowledge base is updated automatically when:
+1. Customer questions are answered by human agents (added to relevant section)
+2. New features are documented
+3. Common issues are identified and resolved
+
+**Format for new entries:**
+```markdown
+### [Question Title]
+
+**Q:** [Customer question]
+
+**A:** [Clear, concise answer]
+
+**Related:** [Links to related docs or sections]
+
+**Added:** YYYY-MM-DD | **Source:** [Ticket # or conversation]
+```
+
+---
+
+## 🔍 Search Tips
+
+- Use your chat client's search to find keywords
+- Reference this doc when escalating conversations
+- Suggest updates when answers need improvement