feat(baoyu-post-to-wechat): add multi-account support

Support multiple WeChat Official Accounts via EXTEND.md accounts block.
Each account gets isolated Chrome profile, credential resolution chain
(inline → prefixed env → unprefixed env), and --account CLI arg.

README.md

@@ -581,6 +581,47 @@ To obtain credentials:
 
 **Browser Method** (no API setup needed): Requires Google Chrome. First run opens browser for QR code login (session preserved).
 
+**Multi-Account Support**: Manage multiple WeChat Official Accounts via `EXTEND.md`:
+
+```bash
+mkdir -p .baoyu-skills/baoyu-post-to-wechat
+```
+
+Create `.baoyu-skills/baoyu-post-to-wechat/EXTEND.md`:
+
+```yaml
+# Global settings (shared across all accounts)
+default_theme: default
+default_color: blue
+
+# Account list
+accounts:
+  - name: My Tech Blog
+    alias: tech-blog
+    default: false
+    default_publish_method: api
+    default_author: Author Name
+    need_open_comment: 1
+    only_fans_can_comment: 0
+    app_id: wx1234567890abcdef
+    app_secret: your_app_secret_here
+  - name: AI Newsletter
+    alias: ai-news
+    default_publish_method: browser
+    default_author: AI Newsletter
+    need_open_comment: 1
+    only_fans_can_comment: 0
+```
+
+| Accounts configured | Behavior |
+|---------------------|----------|
+| No `accounts` block | Single-account mode (backward compatible) |
+| 1 account | Auto-select, no prompt |
+| 2+ accounts | Prompt to select, or use `--account <alias>` |
+| 1 account has `default: true` | Pre-selected as default |
+
+Each account gets an isolated Chrome profile for independent login sessions (browser method). API credentials can be set inline in EXTEND.md or via `.env` with alias-prefixed keys (e.g., `WECHAT_TECH_BLOG_APP_ID`).
+
 #### baoyu-post-to-weibo
 
 Post content to Weibo (微博). Supports regular posts with text, images, and videos, and headline articles (头条文章) with Markdown input. Uses real Chrome with CDP to bypass anti-automation.

README.zh.md

@@ -581,6 +581,47 @@ WECHAT_APP_SECRET=你的AppSecret
 
 **浏览器方式**（无需 API 配置）：需已安装 Google Chrome，首次运行需扫码登录（登录状态会保存）
 
+**多账号支持**：通过 `EXTEND.md` 管理多个微信公众号：
+
+```bash
+mkdir -p .baoyu-skills/baoyu-post-to-wechat
+```
+
+创建 `.baoyu-skills/baoyu-post-to-wechat/EXTEND.md`：
+
+```yaml
+# 全局设置（所有账号共享）
+default_theme: default
+default_color: blue
+
+# 账号列表
+accounts:
+  - name: 宝玉的技术分享
+    alias: baoyu
+    default: false
+    default_publish_method: api
+    default_author: 宝玉
+    need_open_comment: 1
+    only_fans_can_comment: 0
+    app_id: wx1234567890abcdef
+    app_secret: 你的 AppSecret
+  - name: AI 工具集
+    alias: ai-tools
+    default_publish_method: browser
+    default_author: AI 工具集
+    need_open_comment: 1
+    only_fans_can_comment: 0
+```
+
+| 账号配置情况 | 行为 |
+|-------------|------|
+| 无 `accounts` 块 | 单账号模式（向后兼容） |
+| 1 个账号 | 自动选择，无需提示 |
+| 2+ 个账号 | 提示选择，或使用 `--account <别名>` |
+| 某账号设置 `default: true` | 预选为默认账号 |
+
+每个账号拥有独立的 Chrome 配置目录，保证浏览器方式下的登录会话互不干扰。API 凭证可在 EXTEND.md 中直接配置，也可通过 `.env` 文件使用别名前缀的环境变量（如 `WECHAT_BAOYU_APP_ID`）。
+
 #### baoyu-post-to-weibo
 
 发布内容到微博。支持文字、图片、视频发布和头条文章（长篇 Markdown）。使用真实 Chrome + CDP 绕过反自动化检测。

skills/baoyu-post-to-wechat/SKILL.md

@@ -95,9 +95,115 @@ chrome_profile_path: /path/to/chrome/profile
 **Value priority**:
 1. CLI arguments
 2. Frontmatter
-3. EXTEND.md
+3. EXTEND.md (account-level → global-level)
 4. Skill defaults
 
+## Multi-Account Support
+
+EXTEND.md supports managing multiple WeChat Official Accounts. When `accounts:` block is present, each account can have its own credentials, Chrome profile, and default settings.
+
+**Compatibility rules**:
+
+| Condition | Mode | Behavior |
+|-----------|------|----------|
+| No `accounts` block | Single-account | Current behavior, unchanged |
+| `accounts` with 1 entry | Single-account | Auto-select, no prompt |
+| `accounts` with 2+ entries | Multi-account | Prompt to select before publishing |
+| `accounts` with `default: true` | Multi-account | Pre-select default, user can switch |
+
+**Multi-account EXTEND.md example**:
+
+```md
+default_theme: default
+default_color: blue
+
+accounts:
+  - name: 宝玉的技术分享
+    alias: baoyu
+    default: true
+    default_publish_method: api
+    default_author: 宝玉
+    need_open_comment: 1
+    only_fans_can_comment: 0
+    app_id: wx1234567890abcdef
+    app_secret: abc123secret456
+  - name: AI工具集
+    alias: ai-tools
+    default_publish_method: browser
+    default_author: AI工具集
+    need_open_comment: 1
+    only_fans_can_comment: 0
+```
+
+**Per-account keys** (can be set per-account or globally as fallback):
+`default_publish_method`, `default_author`, `need_open_comment`, `only_fans_can_comment`, `app_id`, `app_secret`, `chrome_profile_path`
+
+**Global-only keys** (always shared across accounts):
+`default_theme`, `default_color`
+
+### Account Selection (Step 0.5)
+
+Insert between Step 0 and Step 1 in the Article Posting Workflow:
+
+```
+if no accounts block:
+    → single-account mode (current behavior)
+elif accounts.length == 1:
+    → auto-select the only account
+elif --account <alias> CLI arg:
+    → select matching account
+elif one account has default: true:
+    → pre-select, show: "Using account: <name> (--account to switch)"
+else:
+    → prompt user:
+      "Multiple WeChat accounts configured:
+       1) <name1> (<alias1>)
+       2) <name2> (<alias2>)
+       Select account [1-N]:"
+```
+
+### Credential Resolution (API Method)
+
+For a selected account with alias `{alias}`:
+
+1. `app_id` / `app_secret` inline in EXTEND.md account block
+2. Env var `WECHAT_{ALIAS}_APP_ID` / `WECHAT_{ALIAS}_APP_SECRET` (alias uppercased, hyphens → underscores)
+3. `.baoyu-skills/.env` with prefixed key `WECHAT_{ALIAS}_APP_ID`
+4. `~/.baoyu-skills/.env` with prefixed key
+5. Fallback to unprefixed `WECHAT_APP_ID` / `WECHAT_APP_SECRET`
+
+**.env multi-account example**:
+
+```bash
+# Account: baoyu
+WECHAT_BAOYU_APP_ID=wx1234567890abcdef
+WECHAT_BAOYU_APP_SECRET=abc123secret456
+
+# Account: ai-tools
+WECHAT_AI_TOOLS_APP_ID=wxabcdef1234567890
+WECHAT_AI_TOOLS_APP_SECRET=def789secret012
+```
+
+### Chrome Profile (Browser Method)
+
+Each account uses an isolated Chrome profile for independent login sessions:
+
+| Source | Path |
+|--------|------|
+| Account `chrome_profile_path` in EXTEND.md | Use as-is |
+| Auto-generated from alias | `{shared_profile_parent}/wechat-{alias}/` |
+| Single-account fallback | Shared default profile (current behavior) |
+
+### CLI `--account` Argument
+
+All publishing scripts accept `--account <alias>`:
+
+```bash
+${BUN_X} {baseDir}/scripts/wechat-api.ts <file> --theme default --account ai-tools
+${BUN_X} {baseDir}/scripts/wechat-article.ts --markdown <file> --theme default --account baoyu
+${BUN_X} {baseDir}/scripts/wechat-browser.ts --markdown <file> --images ./photos/ --account baoyu
+```
+
 ## Pre-flight Check (Optional)
 
 Before first use, suggest running the environment check. User can skip if they prefer.
@@ -139,6 +245,7 @@ Copy this checklist and check off items as you complete them:
 ```
 Publishing Progress:
 - [ ] Step 0: Load preferences (EXTEND.md)
+- [ ] Step 0.5: Resolve account (multi-account only)
 - [ ] Step 1: Determine input type
 - [ ] Step 2: Select method and configure credentials
 - [ ] Step 3: Resolve theme/color and validate metadata

skills/baoyu-post-to-wechat/references/config/first-time-setup.md

@@ -152,6 +152,8 @@ options:
 
 ## EXTEND.md Template
 
+### Single Account (Default)
+
 ```md
 default_theme: [default/grace/simple/modern]
 default_color: [preset name, hex, or empty for theme default]
@@ -162,6 +164,40 @@ only_fans_can_comment: [1/0]
 chrome_profile_path:
 ```
 
+### Multi-Account
+
+```md
+default_theme: [default/grace/simple/modern]
+default_color: [preset name, hex, or empty for theme default]
+
+accounts:
+  - name: [display name]
+    alias: [short key, e.g. "baoyu"]
+    default: true
+    default_publish_method: [api/browser]
+    default_author: [author name]
+    need_open_comment: [1/0]
+    only_fans_can_comment: [1/0]
+    app_id: [WeChat App ID, optional]
+    app_secret: [WeChat App Secret, optional]
+  - name: [second account name]
+    alias: [short key, e.g. "ai-tools"]
+    default_publish_method: [api/browser]
+    default_author: [author name]
+    need_open_comment: [1/0]
+    only_fans_can_comment: [1/0]
+```
+
+## Adding More Accounts Later
+
+After initial setup, users can add accounts by editing EXTEND.md:
+
+1. Add an `accounts:` block with list items
+2. Move per-account settings (author, publish method, comments) into each account entry
+3. Keep global settings (theme, color) at the top level
+4. Each account needs a unique `alias` (used for CLI `--account` arg and Chrome profile naming)
+5. Set `default: true` on the primary account
+
 ## Modifying Preferences Later
 
 Users can edit EXTEND.md directly or delete it to trigger setup again.

skills/baoyu-post-to-wechat/scripts/cdp.ts

@@ -1,4 +1,5 @@
 import { execSync, type ChildProcess } from 'node:child_process';
+import path from 'node:path';
 import process from 'node:process';
 
 import {
@@ -80,6 +81,11 @@ export function getDefaultProfileDir(): string {
   });
 }
 
+export function getAccountProfileDir(alias: string): string {
+  const base = getDefaultProfileDir();
+  return path.join(path.dirname(base), `wechat-${alias}`);
+}
+
 export interface ChromeSession {
   cdp: CdpConnection;
   sessionId: string;

skills/baoyu-post-to-wechat/scripts/wechat-api.ts

@@ -1,13 +1,8 @@
 import fs from "node:fs";
 import path from "node:path";
-import os from "node:os";
 import { spawnSync } from "node:child_process";
 import { fileURLToPath } from "node:url";
-
+import { loadWechatExtendConfig, resolveAccount, loadCredentials } from "./wechat-extend-config.ts";
-interface WechatConfig {
-  appId: string;
-  appSecret: string;
-}
 
 interface AccessTokenResponse {
   access_token?: string;
@@ -38,53 +33,14 @@ interface ArticleOptions {
   thumbMediaId: string;
   articleType: ArticleType;
   imageMediaIds?: string[];
+  needOpenComment?: number;
+  onlyFansCanComment?: number;
 }
 
 const TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token";
 const UPLOAD_URL = "https://api.weixin.qq.com/cgi-bin/material/add_material";
 const DRAFT_URL = "https://api.weixin.qq.com/cgi-bin/draft/add";
 
-function loadEnvFile(envPath: string): Record<string, string> {
-  const env: Record<string, string> = {};
-  if (!fs.existsSync(envPath)) return env;
-
-  const content = fs.readFileSync(envPath, "utf-8");
-  for (const line of content.split("\n")) {
-    const trimmed = line.trim();
-    if (!trimmed || trimmed.startsWith("#")) continue;
-    const eqIdx = trimmed.indexOf("=");
-    if (eqIdx > 0) {
-      const key = trimmed.slice(0, eqIdx).trim();
-      let value = trimmed.slice(eqIdx + 1).trim();
-      if ((value.startsWith('"') && value.endsWith('"')) ||
-          (value.startsWith("'") && value.endsWith("'"))) {
-        value = value.slice(1, -1);
-      }
-      env[key] = value;
-    }
-  }
-  return env;
-}
-
-function loadConfig(): WechatConfig {
-  const cwdEnvPath = path.join(process.cwd(), ".baoyu-skills", ".env");
-  const homeEnvPath = path.join(os.homedir(), ".baoyu-skills", ".env");
-
-  const cwdEnv = loadEnvFile(cwdEnvPath);
-  const homeEnv = loadEnvFile(homeEnvPath);
-
-  const appId = process.env.WECHAT_APP_ID || cwdEnv.WECHAT_APP_ID || homeEnv.WECHAT_APP_ID;
-  const appSecret = process.env.WECHAT_APP_SECRET || cwdEnv.WECHAT_APP_SECRET || homeEnv.WECHAT_APP_SECRET;
-
-  if (!appId || !appSecret) {
-    throw new Error(
-      "Missing WECHAT_APP_ID or WECHAT_APP_SECRET.\n" +
-      "Set via environment variables or in .baoyu-skills/.env file."
-    );
-  }
-
-  return { appId, appSecret };
-}
 
 async function fetchAccessToken(appId: string, appSecret: string): Promise<string> {
   const url = `${TOKEN_URL}?grant_type=client_credential&appid=${appId}&secret=${appSecret}`;
@@ -241,6 +197,9 @@ async function publishToDraft(
 
   let article: Record<string, unknown>;
 
+  const noc = options.needOpenComment ?? 1;
+  const ofcc = options.onlyFansCanComment ?? 0;
+
   if (options.articleType === "newspic") {
     if (!options.imageMediaIds || options.imageMediaIds.length === 0) {
       throw new Error("newspic requires at least one image");
@@ -249,8 +208,8 @@ async function publishToDraft(
       article_type: "newspic",
       title: options.title,
       content: options.content,
-      need_open_comment: 1,
+      need_open_comment: noc,
-      only_fans_can_comment: 0,
+      only_fans_can_comment: ofcc,
       image_info: {
         image_list: options.imageMediaIds.map(id => ({ image_media_id: id })),
       },
@@ -262,8 +221,8 @@ async function publishToDraft(
       title: options.title,
       content: options.content,
       thumb_media_id: options.thumbMediaId,
-      need_open_comment: 1,
+      need_open_comment: noc,
-      only_fans_can_comment: 0,
+      only_fans_can_comment: ofcc,
     };
     if (options.author) article.author = options.author;
     if (options.digest) article.digest = options.digest;
@@ -368,6 +327,7 @@ Options:
   --theme <name>      Theme name for markdown (default, grace, simple, modern). Default: default
   --color <name|hex>  Primary color (blue, green, vermilion, etc. or hex)
   --cover <path>      Cover image path (local or URL)
+  --account <alias>   Select account by alias (for multi-account setups)
   --no-cite           Disable bottom citations for ordinary external links in markdown mode
   --dry-run           Parse and render only, don't publish
   --help              Show this help
@@ -412,6 +372,7 @@ interface CliArgs {
   theme: string;
   color?: string;
   cover?: string;
+  account?: string;
   citeStatus: boolean;
   dryRun: boolean;
 }
@@ -449,6 +410,8 @@ function parseArgs(argv: string[]): CliArgs {
       args.color = argv[++i];
     } else if (arg === "--cover" && argv[i + 1]) {
       args.cover = argv[++i];
+    } else if (arg === "--account" && argv[i + 1]) {
+      args.account = argv[++i];
     } else if (arg === "--cite") {
       args.citeStatus = true;
     } else if (arg === "--no-cite") {
@@ -550,6 +513,12 @@ async function main(): Promise<void> {
   if (digest) console.error(`[wechat-api] Digest: ${digest.slice(0, 50)}...`);
   console.error(`[wechat-api] Type: ${args.articleType}`);
 
+  const extConfig = loadWechatExtendConfig();
+  const resolved = resolveAccount(extConfig, args.account);
+  if (resolved.name) console.error(`[wechat-api] Account: ${resolved.name} (${resolved.alias})`);
+
+  if (!author && resolved.default_author) author = resolved.default_author;
+
   if (args.dryRun) {
     console.log(JSON.stringify({
       articleType: args.articleType,
@@ -558,13 +527,14 @@ async function main(): Promise<void> {
       digest: digest || undefined,
       htmlPath,
       contentLength: htmlContent.length,
+      account: resolved.alias || undefined,
     }, null, 2));
     return;
   }
 
-  const config = loadConfig();
+  const creds = loadCredentials(resolved);
   console.error("[wechat-api] Fetching access token...");
-  const accessToken = await fetchAccessToken(config.appId, config.appSecret);
+  const accessToken = await fetchAccessToken(creds.appId, creds.appSecret);
 
   console.error("[wechat-api] Uploading images...");
   const { html: processedHtml, firstMediaId, allMediaIds } = await uploadImagesInHtml(
@@ -617,6 +587,8 @@ async function main(): Promise<void> {
     thumbMediaId,
     articleType: args.articleType,
     imageMediaIds: args.articleType === "newspic" ? allMediaIds : undefined,
+    needOpenComment: resolved.need_open_comment,
+    onlyFansCanComment: resolved.only_fans_can_comment,
   }, accessToken);
 
   console.log(JSON.stringify({

skills/baoyu-post-to-wechat/scripts/wechat-article.ts

@@ -3,7 +3,8 @@ import path from 'node:path';
 import { spawnSync } from 'node:child_process';
 import process from 'node:process';
 import { fileURLToPath } from 'node:url';
-import { launchChrome, tryConnectExisting, findExistingChromeDebugPort, getPageSession, waitForNewTab, clickElement, typeText, evaluate, sleep, type ChromeSession, type CdpConnection } from './cdp.ts';
+import { launchChrome, tryConnectExisting, findExistingChromeDebugPort, getPageSession, waitForNewTab, clickElement, typeText, evaluate, sleep, getAccountProfileDir, type ChromeSession, type CdpConnection } from './cdp.ts';
+import { loadWechatExtendConfig, resolveAccount } from './wechat-extend-config.ts';
 
 const WECHAT_URL = 'https://mp.weixin.qq.com/';
 
@@ -690,6 +691,7 @@ Options:
   --image <path>     Content image, can repeat (only with --content)
   --submit           Save as draft
   --profile <dir>    Chrome profile directory
+  --account <alias>  Select account by alias (for multi-account setups)
   --cdp-port <port>  Connect to existing Chrome debug port instead of launching new instance
 
 Examples:
@@ -725,6 +727,7 @@ async function main(): Promise<void> {
   let submit = false;
   let profileDir: string | undefined;
   let cdpPort: number | undefined;
+  let accountAlias: string | undefined;
 
   for (let i = 0; i < args.length; i++) {
     const arg = args[i]!;
@@ -741,9 +744,20 @@ async function main(): Promise<void> {
     else if (arg === '--image' && args[i + 1]) images.push(args[++i]!);
     else if (arg === '--submit') submit = true;
     else if (arg === '--profile' && args[i + 1]) profileDir = args[++i];
+    else if (arg === '--account' && args[i + 1]) accountAlias = args[++i];
     else if (arg === '--cdp-port' && args[i + 1]) cdpPort = parseInt(args[++i]!, 10);
   }
 
+  const extConfig = loadWechatExtendConfig();
+  const resolved = resolveAccount(extConfig, accountAlias);
+  if (resolved.name) console.log(`[wechat] Account: ${resolved.name} (${resolved.alias})`);
+
+  if (!author && resolved.default_author) author = resolved.default_author;
+
+  if (!profileDir && resolved.alias) {
+    profileDir = resolved.chrome_profile_path || getAccountProfileDir(resolved.alias);
+  }
+
   if (!markdownFile && !htmlFile && !title) { console.error('Error: --title is required (or use --markdown/--html)'); process.exit(1); }
   if (!markdownFile && !htmlFile && !content) { console.error('Error: --content, --html, or --markdown is required'); process.exit(1); }
 

skills/baoyu-post-to-wechat/scripts/wechat-browser.ts

@@ -7,9 +7,11 @@ import {
   CdpConnection,
   findChromeExecutable,
   getDefaultProfileDir,
+  getAccountProfileDir,
   launchChrome,
   sleep,
 } from './cdp.ts';
+import { loadWechatExtendConfig, resolveAccount } from './wechat-extend-config.ts';
 
 const WECHAT_URL = 'https://mp.weixin.qq.com/';
 
@@ -664,6 +666,7 @@ Options:
   --image <path>     Add image (can be repeated)
   --submit           Save as draft (default: preview only)
   --profile <dir>    Chrome profile directory
+  --account <alias>  Select account by alias (for multi-account setups)
   --help             Show this help
 
 Examples:
@@ -685,6 +688,7 @@ async function main(): Promise<void> {
   let content: string | undefined;
   let markdownFile: string | undefined;
   let imagesDir: string | undefined;
+  let accountAlias: string | undefined;
 
   for (let i = 0; i < args.length; i++) {
     const arg = args[i]!;
@@ -702,9 +706,19 @@ async function main(): Promise<void> {
       submit = true;
     } else if (arg === '--profile' && args[i + 1]) {
       profileDir = args[++i];
+    } else if (arg === '--account' && args[i + 1]) {
+      accountAlias = args[++i];
     }
   }
 
+  const extConfig = loadWechatExtendConfig();
+  const resolved = resolveAccount(extConfig, accountAlias);
+  if (resolved.name) console.log(`[wechat-browser] Account: ${resolved.name} (${resolved.alias})`);
+
+  if (!profileDir && resolved.alias) {
+    profileDir = resolved.chrome_profile_path || getAccountProfileDir(resolved.alias);
+  }
+
   if (!markdownFile && !title) {
     console.error('Error: --title or --markdown is required');
     process.exit(1);

skills/baoyu-post-to-wechat/scripts/wechat-extend-config.ts

@@ -0,0 +1,245 @@
+import fs from "node:fs";
+import path from "node:path";
+import os from "node:os";
+
+export interface WechatAccount {
+  name: string;
+  alias: string;
+  default?: boolean;
+  default_publish_method?: string;
+  default_author?: string;
+  need_open_comment?: number;
+  only_fans_can_comment?: number;
+  app_id?: string;
+  app_secret?: string;
+  chrome_profile_path?: string;
+}
+
+export interface WechatExtendConfig {
+  default_theme?: string;
+  default_color?: string;
+  default_publish_method?: string;
+  default_author?: string;
+  need_open_comment?: number;
+  only_fans_can_comment?: number;
+  chrome_profile_path?: string;
+  accounts?: WechatAccount[];
+}
+
+export interface ResolvedAccount {
+  name?: string;
+  alias?: string;
+  default_publish_method?: string;
+  default_author?: string;
+  need_open_comment: number;
+  only_fans_can_comment: number;
+  app_id?: string;
+  app_secret?: string;
+  chrome_profile_path?: string;
+}
+
+function stripQuotes(s: string): string {
+  return s.replace(/^['"]|['"]$/g, "");
+}
+
+function toBool01(v: string): number {
+  return v === "1" || v === "true" ? 1 : 0;
+}
+
+function parseWechatExtend(content: string): WechatExtendConfig {
+  const config: WechatExtendConfig = {};
+  const lines = content.split("\n");
+  let inAccounts = false;
+  let current: Record<string, string> | null = null;
+  const rawAccounts: Record<string, string>[] = [];
+
+  for (const raw of lines) {
+    const trimmed = raw.trim();
+    if (!trimmed || trimmed.startsWith("#")) continue;
+
+    if (trimmed === "accounts:") {
+      inAccounts = true;
+      continue;
+    }
+
+    if (inAccounts) {
+      const listMatch = raw.match(/^\s+-\s+(.+)$/);
+      if (listMatch) {
+        if (current) rawAccounts.push(current);
+        current = {};
+        const kv = listMatch[1]!;
+        const ci = kv.indexOf(":");
+        if (ci > 0) {
+          current[kv.slice(0, ci).trim()] = stripQuotes(kv.slice(ci + 1).trim());
+        }
+        continue;
+      }
+
+      if (current && /^\s{2,}/.test(raw) && !trimmed.startsWith("-")) {
+        const ci = trimmed.indexOf(":");
+        if (ci > 0) {
+          current[trimmed.slice(0, ci).trim()] = stripQuotes(trimmed.slice(ci + 1).trim());
+        }
+        continue;
+      }
+
+      if (!/^\s/.test(raw)) {
+        if (current) rawAccounts.push(current);
+        current = null;
+        inAccounts = false;
+      } else {
+        continue;
+      }
+    }
+
+    const ci = trimmed.indexOf(":");
+    if (ci < 0) continue;
+    const key = trimmed.slice(0, ci).trim();
+    const val = stripQuotes(trimmed.slice(ci + 1).trim());
+    if (val === "null" || val === "") continue;
+
+    switch (key) {
+      case "default_theme": config.default_theme = val; break;
+      case "default_color": config.default_color = val; break;
+      case "default_publish_method": config.default_publish_method = val; break;
+      case "default_author": config.default_author = val; break;
+      case "need_open_comment": config.need_open_comment = toBool01(val); break;
+      case "only_fans_can_comment": config.only_fans_can_comment = toBool01(val); break;
+      case "chrome_profile_path": config.chrome_profile_path = val; break;
+    }
+  }
+
+  if (current) rawAccounts.push(current);
+
+  if (rawAccounts.length > 0) {
+    config.accounts = rawAccounts.map(a => ({
+      name: a.name || "",
+      alias: a.alias || "",
+      default: a.default === "true" || a.default === "1",
+      default_publish_method: a.default_publish_method || undefined,
+      default_author: a.default_author || undefined,
+      need_open_comment: a.need_open_comment ? toBool01(a.need_open_comment) : undefined,
+      only_fans_can_comment: a.only_fans_can_comment ? toBool01(a.only_fans_can_comment) : undefined,
+      app_id: a.app_id || undefined,
+      app_secret: a.app_secret || undefined,
+      chrome_profile_path: a.chrome_profile_path || undefined,
+    }));
+  }
+
+  return config;
+}
+
+export function loadWechatExtendConfig(): WechatExtendConfig {
+  const paths = [
+    path.join(process.cwd(), ".baoyu-skills", "baoyu-post-to-wechat", "EXTEND.md"),
+    path.join(
+      process.env.XDG_CONFIG_HOME || path.join(os.homedir(), ".config"),
+      "baoyu-skills", "baoyu-post-to-wechat", "EXTEND.md"
+    ),
+    path.join(os.homedir(), ".baoyu-skills", "baoyu-post-to-wechat", "EXTEND.md"),
+  ];
+  for (const p of paths) {
+    try {
+      const content = fs.readFileSync(p, "utf-8");
+      return parseWechatExtend(content);
+    } catch {
+      continue;
+    }
+  }
+  return {};
+}
+
+function selectAccount(config: WechatExtendConfig, alias?: string): WechatAccount | undefined {
+  if (!config.accounts || config.accounts.length === 0) return undefined;
+  if (alias) return config.accounts.find(a => a.alias === alias);
+  if (config.accounts.length === 1) return config.accounts[0];
+  return config.accounts.find(a => a.default);
+}
+
+export function resolveAccount(config: WechatExtendConfig, alias?: string): ResolvedAccount {
+  const acct = selectAccount(config, alias);
+  return {
+    name: acct?.name,
+    alias: acct?.alias,
+    default_publish_method: acct?.default_publish_method ?? config.default_publish_method,
+    default_author: acct?.default_author ?? config.default_author,
+    need_open_comment: acct?.need_open_comment ?? config.need_open_comment ?? 1,
+    only_fans_can_comment: acct?.only_fans_can_comment ?? config.only_fans_can_comment ?? 0,
+    app_id: acct?.app_id,
+    app_secret: acct?.app_secret,
+    chrome_profile_path: acct?.chrome_profile_path ?? config.chrome_profile_path,
+  };
+}
+
+function loadEnvFile(envPath: string): Record<string, string> {
+  const env: Record<string, string> = {};
+  if (!fs.existsSync(envPath)) return env;
+  const content = fs.readFileSync(envPath, "utf-8");
+  for (const line of content.split("\n")) {
+    const trimmed = line.trim();
+    if (!trimmed || trimmed.startsWith("#")) continue;
+    const eqIdx = trimmed.indexOf("=");
+    if (eqIdx > 0) {
+      const key = trimmed.slice(0, eqIdx).trim();
+      let value = trimmed.slice(eqIdx + 1).trim();
+      if ((value.startsWith('"') && value.endsWith('"')) ||
+          (value.startsWith("'") && value.endsWith("'"))) {
+        value = value.slice(1, -1);
+      }
+      env[key] = value;
+    }
+  }
+  return env;
+}
+
+function aliasToEnvKey(alias: string): string {
+  return alias.toUpperCase().replace(/-/g, "_");
+}
+
+export function loadCredentials(account?: ResolvedAccount): { appId: string; appSecret: string } {
+  if (account?.app_id && account?.app_secret) {
+    return { appId: account.app_id, appSecret: account.app_secret };
+  }
+
+  const cwdEnvPath = path.join(process.cwd(), ".baoyu-skills", ".env");
+  const homeEnvPath = path.join(os.homedir(), ".baoyu-skills", ".env");
+  const cwdEnv = loadEnvFile(cwdEnvPath);
+  const homeEnv = loadEnvFile(homeEnvPath);
+
+  const prefix = account?.alias ? `WECHAT_${aliasToEnvKey(account.alias)}_` : "";
+
+  let appId = "";
+  let appSecret = "";
+
+  if (prefix) {
+    appId = process.env[`${prefix}APP_ID`]
+      || cwdEnv[`${prefix}APP_ID`]
+      || homeEnv[`${prefix}APP_ID`]
+      || "";
+    appSecret = process.env[`${prefix}APP_SECRET`]
+      || cwdEnv[`${prefix}APP_SECRET`]
+      || homeEnv[`${prefix}APP_SECRET`]
+      || "";
+  }
+
+  if (!appId) {
+    appId = process.env.WECHAT_APP_ID || cwdEnv.WECHAT_APP_ID || homeEnv.WECHAT_APP_ID || "";
+  }
+  if (!appSecret) {
+    appSecret = process.env.WECHAT_APP_SECRET || cwdEnv.WECHAT_APP_SECRET || homeEnv.WECHAT_APP_SECRET || "";
+  }
+
+  if (!appId || !appSecret) {
+    const hint = account?.alias ? ` (account: ${account.alias})` : "";
+    throw new Error(
+      `Missing WECHAT_APP_ID or WECHAT_APP_SECRET${hint}.\n` +
+      "Set via EXTEND.md account config, environment variables, or .baoyu-skills/.env file."
+    );
+  }
+
+  return { appId, appSecret };
+}
+
+export function listAccounts(config: WechatExtendConfig): string[] {
+  return (config.accounts || []).map(a => a.alias);
+}