docs: reorganize documentation structure

docs/web/dashboard.md

@@ -0,0 +1,20 @@
+---
+summary: "Gateway dashboard (Control UI) access and auth"
+read_when:
+  - Changing dashboard authentication or exposure modes
+---
+# Dashboard (Control UI)
+
+The Gateway dashboard is the browser Control UI served at `/` by default
+(override with `gateway.controlUi.basePath`).
+
+Quick open (local Gateway):
+- http://127.0.0.1:18789/ (or http://localhost:18789/)
+
+Key references:
+- [`docs/control-ui.md`](https://docs.clawd.bot/web/control-ui) for usage and UI capabilities.
+- [`docs/tailscale.md`](https://docs.clawd.bot/gateway/tailscale) for Serve/Funnel automation.
+- [`docs/web.md`](https://docs.clawd.bot/web) for bind modes and security notes.
+
+Authentication is enforced at the WebSocket handshake via `connect.params.auth`
+(token or password). See `gateway.auth` in [`docs/configuration.md`](https://docs.clawd.bot/gateway/configuration).