docs(cli): add per-command CLI pages

src/cli/dns-cli.ts

@@ -7,6 +7,8 @@ import type { Command } from "commander";
 import { loadConfig } from "../config/config.js";
 import { pickPrimaryTailnetIPv4, pickPrimaryTailnetIPv6 } from "../infra/tailnet.js";
 import { getWideAreaZonePath, WIDE_AREA_DISCOVERY_DOMAIN } from "../infra/widearea-dns.js";
+import { formatDocsLink } from "../terminal/links.js";
+import { theme } from "../terminal/theme.js";
 
 type RunOpts = { allowFailure?: boolean; inherit?: boolean };
 
@@ -90,7 +92,11 @@ function ensureImportLine(corefilePath: string, importGlob: string): boolean {
 export function registerDnsCli(program: Command) {
   const dns = program
     .command("dns")
-    .description("DNS helpers for wide-area discovery (Tailscale + CoreDNS)");
+    .description("DNS helpers for wide-area discovery (Tailscale + CoreDNS)")
+    .addHelpText(
+      "after",
+      () => `\n${theme.muted("Docs:")} ${formatDocsLink("/cli/dns", "docs.clawd.bot/cli/dns")}\n`,
+    );
 
   dns
     .command("setup")