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

docs/help/troubleshooting.md

@@ -0,0 +1,59 @@
+---
+summary: "Troubleshooting hub: symptoms → checks → fixes"
+read_when:
+  - You see an error and want the fix path
+  - The installer says “success” but the CLI doesn’t work
+---
+
+# Troubleshooting
+
+## First 60 seconds
+
+Run these in order:
+
+```bash
+clawdbot status
+clawdbot status --all
+clawdbot daemon status
+clawdbot logs --follow
+clawdbot doctor
+```
+
+If the gateway is reachable, deep probes:
+
+```bash
+clawdbot status --deep
+```
+
+## Common “it broke” cases
+
+### `clawdbot: command not found`
+
+Almost always a Node/npm PATH issue. Start here:
+
+- [Node.js + npm (PATH sanity)](/install/node)
+
+### Gateway “unauthorized”, can’t connect, or keeps reconnecting
+
+- [Gateway troubleshooting](/gateway/troubleshooting)
+- [Gateway authentication](/gateway/authentication)
+
+### Daemon says running, but RPC probe fails
+
+- [Gateway troubleshooting](/gateway/troubleshooting)
+- [Background process / daemon](/gateway/background-process)
+
+### Model/auth failures (rate limit, billing, “all models failed”)
+
+- [Models](/cli/models)
+- [OAuth / auth concepts](/concepts/oauth)
+
+### When filing an issue
+
+Paste a safe report:
+
+```bash
+clawdbot status --all
+```
+
+If you can, include the relevant log tail from `clawdbot logs --follow`.