docs(cli): add per-command CLI pages

docs/cli/dns.md

@@ -0,0 +1,22 @@
+---
+summary: "CLI reference for `clawdbot dns` (wide-area discovery helpers)"
+read_when:
+  - You want wide-area discovery (DNS-SD) via Tailscale + CoreDNS
+  - You’re setting up split DNS for clawdbot.internal
+---
+
+# `clawdbot dns`
+
+DNS helpers for wide-area discovery (Tailscale + CoreDNS). Currently focused on macOS + Homebrew CoreDNS.
+
+Related:
+- Gateway discovery: [Discovery](/gateway/discovery)
+- Wide-area discovery config: [Configuration](/gateway/configuration)
+
+## Setup
+
+```bash
+clawdbot dns setup
+clawdbot dns setup --apply
+```
+