fix(runtime): tailor root help to product entrypoints

- render auth flag sections only for auth domains used by registered commands
- make quick-start prompts opt-in through createCli options
- keep the existing quick-start prompts wired only for bl

packages/cli/src/main.ts

@@ -2,9 +2,17 @@ import { createCli } from "bailian-cli-runtime";
 import { commands } from "./commands.ts";
 import pkg from "../package.json" with { type: "json" };
 
+const quickStartTasks = [
+  "Help me generate a set of Amazon e-commerce main images for baseball caps (white background + lifestyle shots + model wear shots)",
+  "Help me generate a 3-minute humorous crosstalk audio clip",
+  "Help me generate a Little Red Riding Hood picture-book PDF (with illustrations)",
+  "Help me analyze this video and write a Xiaohongshu-style post",
+] as const;
+
 void createCli(commands, {
   binName: "bl",
   version: pkg.version,
   clientName: "bailian-cli",
   npmPackage: "bailian-cli",
+  quickStartTasks,
 }).run();

packages/runtime/src/create-cli.ts

@@ -40,6 +40,8 @@ export interface CliOptions {
   clientName: string;
   /** npm package name for self-update (e.g. "bailian-cli", "bailian-cli-rag"). */
   npmPackage: string;
+  /** Root-help suggestions shown after credentials are configured. */
+  quickStartTasks?: readonly string[];
 }
 
 export interface Cli {
@@ -112,8 +114,11 @@ export function createCli(commands: Record<string, AnyCommand>, opts: CliOptions
     } catch {
       /* unparseable global flags on the bare invocation — fall through to welcome */
     }
-    if (hasKey) printQuickStart();
-    else printWelcomeBanner(binName);
+    if (hasKey) {
+      if (opts.quickStartTasks?.length) printQuickStart(opts.quickStartTasks);
+    } else {
+      printWelcomeBanner(binName);
+    }
   }
 
   async function dispatch(argv: string[]): Promise<void> {

packages/runtime/src/output/banner.ts

@@ -1,13 +1,6 @@
 import { API_KEY_PAGE } from "../urls.ts";
 import { ansi } from "./color.ts";
 
-const QUICK_START_TASKS = [
-  "Help me generate a set of Amazon e-commerce main images for baseball caps (white background + lifestyle shots + model wear shots)",
-  "Help me generate a 3-minute humorous crosstalk audio clip",
-  "Help me generate a Little Red Riding Hood picture-book PDF (with illustrations)",
-  "Help me analyze this video and write a Xiaohongshu-style post",
-];
-
 export function printWelcomeBanner(cliName: string): void {
   const color = ansi(process.stderr);
   process.stderr.write(`\n  Welcome to ${color.purple("Bailian")} CLI!\n\n`);
@@ -16,10 +9,10 @@ export function printWelcomeBanner(cliName: string): void {
   process.stderr.write(`  2. Login:             ${cliName} auth login --api-key <your-key>\n\n`);
 }
 
-export function printQuickStart(): void {
+export function printQuickStart(tasks: readonly string[]): void {
   const color = ansi(process.stderr);
   process.stderr.write("\n🎯 Try these with your AI coding assistant:\n\n");
-  QUICK_START_TASKS.forEach((task, i) => {
+  tasks.forEach((task, i) => {
     process.stderr.write(`${color.dim(String(i + 1))}  ${task}\n`);
   });
   process.stderr.write("\n");

packages/runtime/src/registry.ts

@@ -1,4 +1,4 @@
-import type { AnyCommand, FlagDef } from "bailian-cli-core";
+import type { AnyCommand, AuthRequirement, FlagDef, FlagsDef } from "bailian-cli-core";
 import { UsageError } from "bailian-cli-core";
 import {
   CONSOLE_AUTH_FLAGS,
@@ -42,6 +42,7 @@ export class CommandRegistry {
   private root: CommandNode = { children: new Map() };
   /** Binary name shown in usage/help/error strings (e.g. "bl", "rag"). */
   private readonly cliName: string;
+  private readonly authRequirements = new Set<AuthRequirement>();
 
   constructor(commands: Record<string, AnyCommand>, cliName: string) {
     this.cliName = cliName;
@@ -67,6 +68,7 @@ export class CommandRegistry {
       node = node.children.get(part)!;
     }
     node.command = command;
+    this.authRequirements.add(command.auth);
   }
 
   getAllCommands(): AnyCommand[] {
@@ -176,7 +178,7 @@ export class CommandRegistry {
   }
 
   private buildFlagLines(
-    defs: Record<string, FlagDef>,
+    defs: FlagsDef,
     a: (s: string) => string,
     d: (s: string) => string,
   ): string {
@@ -188,6 +190,19 @@ export class CommandRegistry {
     return lines.map((l) => `  ${a(l.flag.padEnd(maxLen + 2))} ${d(l.desc)}`).join("\n");
   }
 
+  private buildAuthFlagSection(
+    auth: AuthRequirement,
+    label: string,
+    scope: string,
+    defs: FlagsDef,
+    b: (s: string) => string,
+    a: (s: string) => string,
+    d: (s: string) => string,
+  ): string | null {
+    if (!this.authRequirements.has(auth)) return null;
+    return `${b(label)} ${d(scope)}\n${this.buildFlagLines(defs, a, d)}`;
+  }
+
   // Color helpers — no-ops when output is not a TTY.
   private bold = (s: string, out: NodeJS.WriteStream) => ansi(out).bold(s);
   private accent = (s: string, out: NodeJS.WriteStream) => ansi(out).accent(s);
@@ -268,9 +283,37 @@ ${d(`  ${this.cliName} pipeline run workflow.yaml --dry-run --output json`)}
 
     const commandLines = this.buildResourceLines(a, d);
     const globalFlagLines = this.buildFlagLines(GLOBAL_FLAGS, a, d);
-    const modelFlagLines = this.buildFlagLines(MODEL_AUTH_FLAGS, a, d);
-    const consoleFlagLines = this.buildFlagLines(CONSOLE_AUTH_FLAGS, a, d);
-    const openapiFlagLines = this.buildFlagLines(OPENAPI_AUTH_FLAGS, a, d);
+    const authFlagSections = [
+      this.buildAuthFlagSection(
+        "apiKey",
+        "Model Auth Flags:",
+        "(model-domain commands)",
+        MODEL_AUTH_FLAGS,
+        b,
+        a,
+        d,
+      ),
+      this.buildAuthFlagSection(
+        "console",
+        "Console Auth Flags:",
+        "(console-domain commands)",
+        CONSOLE_AUTH_FLAGS,
+        b,
+        a,
+        d,
+      ),
+      this.buildAuthFlagSection(
+        "openapi",
+        "OpenAPI Auth Flags:",
+        "(openapi-domain commands)",
+        OPENAPI_AUTH_FLAGS,
+        b,
+        a,
+        d,
+      ),
+    ]
+      .filter((section): section is string => section !== null)
+      .join("\n\n");
 
     out.write(`
 ${b("Usage:")} ${this.cliName} <resource> <command> [flags]
@@ -281,16 +324,7 @@ ${commandLines}
 ${b("Global Flags:")}
 ${globalFlagLines}
 
-${b("Model Auth Flags:")} ${d("(model-domain commands)")}
-${modelFlagLines}
-
-${b("Console Auth Flags:")} ${d("(console-domain commands)")}
-${consoleFlagLines}
-
-${b("OpenAPI Auth Flags:")} ${d("(openapi-domain commands)")}
-${openapiFlagLines}
-
-${b("Getting Help:")}
+${authFlagSections ? `${authFlagSections}\n\n` : ""}${b("Getting Help:")}
   ${d("Add --help after any command to see its full list of flags, defaults,")}
   ${d("and usage examples. For example:")} ${this.cliName} ${this.helpExample()} --help
 `);