docs: add /help hub and Node/npm PATH guide

docs/help/faq.md

@@ -0,0 +1,32 @@
+---
+summary: "FAQ (concepts): what Clawdbot is and how it fits together"
+read_when:
+  - You’re new and want the mental model
+  - You’re not debugging a specific error
+---
+
+# FAQ (concepts)
+
+If you’re here because something’s broken, start with: [Troubleshooting](/help/troubleshooting).
+
+## What is Clawdbot?
+
+Clawdbot is a personal AI assistant you run on your own devices. It replies on the messaging surfaces you already use (WhatsApp, Telegram, Slack, Discord, Signal, iMessage, WebChat) and can also do voice + a live Canvas on supported platforms. The **Gateway** is the always‑on control plane; the assistant is the product.
+
+## What runtime do I need?
+
+Node **>= 22** is required. `pnpm` is recommended. Bun is **not recommended** for the Gateway.
+
+## What’s the recommended setup flow?
+
+Use the onboarding wizard:
+
+```bash
+clawdbot onboard --install-daemon
+```
+
+Then use:
+
+```bash
+clawdbot dashboard
+```