docs: align CLI docs and help surface

src/cli/completion-cli.ts

@@ -4,6 +4,8 @@ import path from "node:path";
 import { Command, Option } from "commander";
 import { resolveStateDir } from "../config/paths.js";
 import { routeLogsToStderr } from "../logging/console.js";
+import { formatDocsLink } from "../terminal/links.js";
+import { theme } from "../terminal/theme.js";
 import { pathExists } from "../utils.js";
 import {
   buildFishOptionCompletionLine,
@@ -230,6 +232,11 @@ export function registerCompletionCli(program: Command) {
   program
     .command("completion")
     .description("Generate shell completion script")
+    .addHelpText(
+      "after",
+      () =>
+        `\n${theme.muted("Docs:")} ${formatDocsLink("/cli/completion", "docs.openclaw.ai/cli/completion")}\n`,
+    )
     .addOption(
       new Option("-s, --shell <shell>", "Shell to generate completion for (default: zsh)").choices(
         COMPLETION_SHELLS,