Add browser-based board CLI auth flow

Co-Authored-By: Paperclip <noreply@paperclip.ing>

cli/src/index.ts

@@ -19,6 +19,7 @@ import { applyDataDirOverride, type DataDirOptionLike } from "./config/data-dir.
 import { loadPaperclipEnvFile } from "./config/env.js";
 import { registerWorktreeCommands } from "./commands/worktree.js";
 import { registerPluginCommands } from "./commands/client/plugin.js";
+import { registerClientAuthCommands } from "./commands/client/auth.js";
 
 const program = new Command();
 const DATA_DIR_OPTION_HELP =
@@ -151,6 +152,8 @@ auth
   .option("--base-url <url>", "Public base URL used to print invite link")
   .action(bootstrapCeoInvite);
 
+registerClientAuthCommands(auth);
+
 program.parseAsync().catch((err) => {
   console.error(err instanceof Error ? err.message : String(err));
   process.exit(1);