diff --git a/README.md b/README.md
index 8f171cc..b840680 100644
--- a/README.md
+++ b/README.md
@@ -96,23 +96,25 @@ Web 端相关代码仍然保留，但已经不是当前主线，不保证可直
 当前抖音、快手、Bilibili 已经接入 CLI：
 
 ```bash
-sau douyin login --account creator
-sau douyin check --account creator
-sau douyin upload-video --account creator --file videos/demo.mp4 --title "示例标题"
-sau douyin upload-note --account creator --images videos/1.png videos/2.png --note "图文示例"
+sau douyin login --account <account_name>
+sau douyin check --account <account_name>
+sau douyin upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题"
+sau douyin upload-note --account <account_name> --images videos/1.png videos/2.png --note "图文示例"
 
-sau kuaishou login --account creator
-sau kuaishou check --account creator
-sau kuaishou upload-video --account creator --file videos/demo.mp4 --title "示例标题"
-sau kuaishou upload-note --account creator --images videos/1.png videos/2.png videos/3.png --note "图文示例"
+sau kuaishou login --account <account_name>
+sau kuaishou check --account <account_name>
+sau kuaishou upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题"
+sau kuaishou upload-note --account <account_name> --images videos/1.png videos/2.png videos/3.png --note "图文示例"
 
-sau bilibili login --account creator
-sau bilibili check --account creator
-sau bilibili upload-video --account creator --file videos/demo.mp4 --title "示例标题" --desc "示例简介" --tid 249
+sau bilibili login --account <account_name>
+sau bilibili check --account <account_name>
+sau bilibili upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题" --desc "示例简介" --tid 249
 ```
 
 补充说明：
 
+- `creator` 之类的名字只是示例值，真正含义是 `account_name`
+- 一个 `account_name` 对应一个账号文件，可以准备多个账号，也可以按账号名并发执行任务
 - Bilibili CLI 不要求用户手动安装 `biliup`
 - 首次运行相关命令时，程序会自动下载 `biliup`
 - 后续运行会自动检查上游 release 并更新
diff --git a/docs/CLI.md b/docs/CLI.md
index 78ce58a..8fa1734 100644
--- a/docs/CLI.md
+++ b/docs/CLI.md
@@ -42,32 +42,34 @@ $env:PLAYWRIGHT_DOWNLOAD_HOST="https://npmmirror.com/mirrors/playwright"; patchr
 ## 抖音 CLI 子命令
 
 ```bash
-sau douyin login --account creator
-sau douyin login --account creator --headless
-sau douyin check --account creator
-sau douyin upload-video --account creator --file videos/demo.mp4 --title "示例标题" --tags 运动,训练
-sau douyin upload-note --account creator --images videos/1.png videos/2.png --note "图文示例" --tags 图文,测试
+sau douyin login --account <account_name>
+sau douyin login --account <account_name> --headless
+sau douyin check --account <account_name>
+sau douyin upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题" --tags 运动,训练
+sau douyin upload-note --account <account_name> --images videos/1.png videos/2.png --note "图文示例" --tags 图文,测试
 ```
 
 ## 快手 CLI 子命令
 
 ```bash
-sau kuaishou login --account creator
-sau kuaishou check --account creator
-sau kuaishou upload-video --account creator --file videos/demo.mp4 --title "示例标题" --tags 运动,训练
-sau kuaishou upload-note --account creator --images videos/1.png videos/2.png videos/3.png --note "图文示例" --tags 图文,测试
+sau kuaishou login --account <account_name>
+sau kuaishou check --account <account_name>
+sau kuaishou upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题" --tags 运动,训练
+sau kuaishou upload-note --account <account_name> --images videos/1.png videos/2.png videos/3.png --note "图文示例" --tags 图文,测试
 ```
 
 ## Bilibili CLI 子命令
 
 ```bash
-sau bilibili login --account creator
-sau bilibili check --account creator
-sau bilibili upload-video --account creator --file videos/demo.mp4 --title "示例标题" --desc "示例简介" --tid 249 --tags 足球,测试
+sau bilibili login --account <account_name>
+sau bilibili check --account <account_name>
+sau bilibili upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题" --desc "示例简介" --tid 249 --tags 足球,测试
 ```
 
 补充说明：
 
+- `creator` 之类的名字只是示例值，真正传的是用户自定义的 `account_name`
+- 一个 `account_name` 对应一个账号文件，可以准备多个账号并发使用
 - `sau bilibili ...` 会自动准备 `biliup`
 - 如果本地没有 `biliup`，第一次运行会自动下载
 - 如果上游 GitHub Release 有更新，运行时会先自动更新
@@ -86,11 +88,11 @@ sau bilibili upload-video --account creator --file videos/demo.mp4 --title "示
 抖音、快手、Bilibili 的视频上传都支持 `--schedule`。只要传了 `--schedule`，CLI 就会自动切换到对应平台的定时发布策略；不传则默认立即发布。
 
 ```bash
-sau douyin upload-video --account creator --file videos/demo.mp4 --title "示例标题" --schedule "2026-03-24 21:30"
-sau douyin upload-note --account creator --images videos/1.png videos/2.png --note "图文示例" --schedule "2026-03-24 21:30"
-sau kuaishou upload-video --account creator --file videos/demo.mp4 --title "示例标题" --schedule "2026-03-24 21:30"
-sau kuaishou upload-note --account creator --images videos/1.png videos/2.png videos/3.png --note "图文示例" --schedule "2026-03-24 21:30"
-sau bilibili upload-video --account creator --file videos/demo.mp4 --title "示例标题" --desc "示例简介" --tid 249 --schedule "2026-03-24 21:30"
+sau douyin upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题" --schedule "2026-03-24 21:30"
+sau douyin upload-note --account <account_name> --images videos/1.png videos/2.png --note "图文示例" --schedule "2026-03-24 21:30"
+sau kuaishou upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题" --schedule "2026-03-24 21:30"
+sau kuaishou upload-note --account <account_name> --images videos/1.png videos/2.png videos/3.png --note "图文示例" --schedule "2026-03-24 21:30"
+sau bilibili upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题" --desc "示例简介" --tid 249 --schedule "2026-03-24 21:30"
 ```
 
 ## 运行时参数
diff --git a/docs/install.md b/docs/install.md
index 4dc36b8..9858786 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -95,30 +95,32 @@ sau bilibili --help
 ### 7. 抖音主线示例
 
 ```bash
-sau douyin login --account creator
-sau douyin check --account creator
-sau douyin upload-video --account creator --file videos/demo.mp4 --title "示例标题"
+sau douyin login --account <account_name>
+sau douyin check --account <account_name>
+sau douyin upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题"
 ```
 
 ### 8. 快手主线示例
 
 ```bash
-sau kuaishou login --account creator
-sau kuaishou check --account creator
-sau kuaishou upload-video --account creator --file videos/demo.mp4 --title "示例标题"
-sau kuaishou upload-note --account creator --images videos/1.png videos/2.png videos/3.png --note "图文示例"
+sau kuaishou login --account <account_name>
+sau kuaishou check --account <account_name>
+sau kuaishou upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题"
+sau kuaishou upload-note --account <account_name> --images videos/1.png videos/2.png videos/3.png --note "图文示例"
 ```
 
 ### 9. Bilibili 主线示例
 
 ```bash
-sau bilibili login --account creator
-sau bilibili check --account creator
-sau bilibili upload-video --account creator --file videos/demo.mp4 --title "示例标题" --desc "示例简介" --tid 249
+sau bilibili login --account <account_name>
+sau bilibili check --account <account_name>
+sau bilibili upload-video --account <account_name> --file videos/demo.mp4 --title "示例标题" --desc "示例简介" --tid 249
 ```
 
 补充说明：
 
+- `creator` 之类的名字只是示例值，真正传的是用户自定义的 `account_name`
+- 一个 `account_name` 对应一个账号文件，可以准备多个账号并发使用
 - 用户不需要手动安装 `biliup`
 - 首次运行 Bilibili 相关命令时，程序会自动下载 `biliup`
 - 后续运行会自动检查上游 release 并自动更新
diff --git a/sau_cli.py b/sau_cli.py
index 4c31886..6bf18be 100644
--- a/sau_cli.py
+++ b/sau_cli.py
@@ -342,12 +342,12 @@ def build_parser() -> argparse.ArgumentParser:
 
     for action_name in ("login", "check"):
         action_parser = douyin_actions.add_parser(action_name, help=f"Douyin {action_name}")
-        action_parser.add_argument("--account", required=True, help="Douyin account alias")
+        action_parser.add_argument("--account", required=True, help="Douyin user-defined account_name")
         if action_name == "login":
             add_runtime_flags(action_parser)
 
     upload_video_parser = douyin_actions.add_parser("upload-video", help="Upload one video to Douyin")
-    upload_video_parser.add_argument("--account", required=True, help="Douyin account alias")
+    upload_video_parser.add_argument("--account", required=True, help="Douyin user-defined account_name")
     upload_video_parser.add_argument("--file", required=True, type=existing_file_path, help="Video file path")
     upload_video_parser.add_argument("--title", required=True, help="Video title")
     upload_video_parser.add_argument("--tags", default="", help="Comma-separated tags, such as tag1,tag2")
@@ -358,7 +358,7 @@ def build_parser() -> argparse.ArgumentParser:
     add_runtime_flags(upload_video_parser)
 
     upload_note_parser = douyin_actions.add_parser("upload-note", help="Upload one note to Douyin")
-    upload_note_parser.add_argument("--account", required=True, help="Douyin account alias")
+    upload_note_parser.add_argument("--account", required=True, help="Douyin user-defined account_name")
     upload_note_parser.add_argument("--images", required=True, nargs="+", type=existing_file_path, help="Image file paths")
     upload_note_parser.add_argument("--note", required=True, help="Note content")
     upload_note_parser.add_argument("--tags", default="", help="Comma-separated tags, such as tag1,tag2")
@@ -370,12 +370,12 @@ def build_parser() -> argparse.ArgumentParser:
 
     for action_name in ("login", "check"):
         action_parser = kuaishou_actions.add_parser(action_name, help=f"Kuaishou {action_name}")
-        action_parser.add_argument("--account", required=True, help="Kuaishou account alias")
+        action_parser.add_argument("--account", required=True, help="Kuaishou user-defined account_name")
         if action_name == "login":
             add_runtime_flags(action_parser)
 
     kuaishou_upload_video_parser = kuaishou_actions.add_parser("upload-video", help="Upload one video to Kuaishou")
-    kuaishou_upload_video_parser.add_argument("--account", required=True, help="Kuaishou account alias")
+    kuaishou_upload_video_parser.add_argument("--account", required=True, help="Kuaishou user-defined account_name")
     kuaishou_upload_video_parser.add_argument("--file", required=True, type=existing_file_path, help="Video file path")
     kuaishou_upload_video_parser.add_argument("--title", required=True, help="Video title")
     kuaishou_upload_video_parser.add_argument("--tags", default="", help="Comma-separated tags, such as tag1,tag2")
@@ -384,7 +384,7 @@ def build_parser() -> argparse.ArgumentParser:
     add_runtime_flags(kuaishou_upload_video_parser)
 
     kuaishou_upload_note_parser = kuaishou_actions.add_parser("upload-note", help="Upload one note to Kuaishou")
-    kuaishou_upload_note_parser.add_argument("--account", required=True, help="Kuaishou account alias")
+    kuaishou_upload_note_parser.add_argument("--account", required=True, help="Kuaishou user-defined account_name")
     kuaishou_upload_note_parser.add_argument("--images", required=True, nargs="+", type=existing_file_path, help="Image file paths")
     kuaishou_upload_note_parser.add_argument("--note", required=True, help="Note content")
     kuaishou_upload_note_parser.add_argument("--tags", default="", help="Comma-separated tags, such as tag1,tag2")
@@ -396,10 +396,10 @@ def build_parser() -> argparse.ArgumentParser:
 
     for action_name in ("login", "check"):
         action_parser = bilibili_actions.add_parser(action_name, help=f"Bilibili {action_name}")
-        action_parser.add_argument("--account", required=True, help="Bilibili account alias")
+        action_parser.add_argument("--account", required=True, help="Bilibili user-defined account_name")
 
     bilibili_upload_video_parser = bilibili_actions.add_parser("upload-video", help="Upload one video to Bilibili")
-    bilibili_upload_video_parser.add_argument("--account", required=True, help="Bilibili account alias")
+    bilibili_upload_video_parser.add_argument("--account", required=True, help="Bilibili user-defined account_name")
     bilibili_upload_video_parser.add_argument("--file", required=True, type=existing_file_path, help="Video file path")
     bilibili_upload_video_parser.add_argument("--title", required=True, help="Video title")
     bilibili_upload_video_parser.add_argument("--desc", required=True, help="Video description")
diff --git a/skills/bilibili-upload/references/cli-contract.md b/skills/bilibili-upload/references/cli-contract.md
index b60dd4a..c010571 100644
--- a/skills/bilibili-upload/references/cli-contract.md
+++ b/skills/bilibili-upload/references/cli-contract.md
@@ -15,6 +15,9 @@ sau bilibili login --account <account>
 - 作用：
   - 自动准备 `biliup`
   - 触发 Bilibili 登录流程
+- 账号说明：
+  - `--account` 传的是用户自定义的 `account_name`，不是固定只能叫 `creator`
+  - 一个 `account_name` 对应一个账号文件，可用于多账号隔离和并发任务
 - 登录方式说明：
   - 这个命令应该由用户自己在本地真实终端里运行
   - 如果终端二维码显示不完整，可直接打开当前目录下的 `qrcode.png` 扫码
diff --git a/skills/bilibili-upload/scripts/examples/bilibili_cli_template.py b/skills/bilibili-upload/scripts/examples/bilibili_cli_template.py
index fcdaf23..76d5d23 100644
--- a/skills/bilibili-upload/scripts/examples/bilibili_cli_template.py
+++ b/skills/bilibili-upload/scripts/examples/bilibili_cli_template.py
@@ -9,6 +9,9 @@ from utils.constant import VideoZoneTypes
 
 
 def main() -> None:
+    account = "account_a"
+    # account_name is user-defined. One account_name maps to one account file.
+    # You can prepare multiple account names and run them in parallel.
     cli_path = Path(BASE_DIR) / "sau_cli.py"
     command = [
         sys.executable,
@@ -16,7 +19,7 @@ def main() -> None:
         "bilibili",
         "upload-video",
         "--account",
-        "creator",
+        account,
         "--file",
         str(Path(BASE_DIR) / "videos" / "demo.mp4"),
         "--title",
diff --git a/skills/bilibili-upload/scripts/examples/bilibili_commands.ps1 b/skills/bilibili-upload/scripts/examples/bilibili_commands.ps1
index cc6d5f2..347c6fa 100644
--- a/skills/bilibili-upload/scripts/examples/bilibili_commands.ps1
+++ b/skills/bilibili-upload/scripts/examples/bilibili_commands.ps1
@@ -1,14 +1,18 @@
 # 登录
 # 建议由用户自己在本地真实终端里执行。
 # 如果终端二维码显示不完整，可以打开当前目录下的 qrcode.png 扫码。
-sau bilibili login --account creator
+$account = "account_a"
+# account_name is user-defined. One account_name maps to one account file.
+# You can prepare multiple account names and run them in parallel.
+
+sau bilibili login --account $account
 
 # 校验
-sau bilibili check --account creator
+sau bilibili check --account $account
 
 # 上传视频
 sau bilibili upload-video `
-  --account creator `
+  --account $account `
   --file .\videos\demo.mp4 `
   --title "Bilibili CLI Demo" `
   --desc "Bilibili CLI Demo" `
diff --git a/skills/bilibili-upload/scripts/examples/bilibili_commands.sh b/skills/bilibili-upload/scripts/examples/bilibili_commands.sh
index d6edfaa..446abe2 100644
--- a/skills/bilibili-upload/scripts/examples/bilibili_commands.sh
+++ b/skills/bilibili-upload/scripts/examples/bilibili_commands.sh
@@ -1,14 +1,18 @@
 # login
 # Run this in a local interactive terminal.
 # If the terminal QR code is incomplete, open ./qrcode.png and scan that image.
-sau bilibili login --account creator
+account="account_a"
+# account_name is user-defined. One account_name maps to one account file.
+# You can prepare multiple account names and run them in parallel.
+
+sau bilibili login --account "$account"
 
 # check
-sau bilibili check --account creator
+sau bilibili check --account "$account"
 
 # upload video
 sau bilibili upload-video \
-  --account creator \
+  --account "$account" \
   --file ./videos/demo.mp4 \
   --title "Bilibili CLI Demo" \
   --desc "Bilibili CLI Demo" \
diff --git a/skills/douyin-upload/references/cli-contract.md b/skills/douyin-upload/references/cli-contract.md
index 4cb2c0f..46bd07d 100644
--- a/skills/douyin-upload/references/cli-contract.md
+++ b/skills/douyin-upload/references/cli-contract.md
@@ -15,6 +15,9 @@ sau douyin login --account <account>
 - 作用:
   - 启动抖音登录流程，为指定账号生成或刷新 cookie 文件
   - 如果登录过程中生成本地二维码图片，agent 应优先直接把图片展示/发送给用户扫码，而不是只回传路径
+- 账号说明:
+  - `--account` 传的是用户自定义的 `account_name`，不是固定只能叫 `creator`
+  - 一个 `account_name` 对应一个账号文件，可用于多账号隔离和并发任务
 
 ### 校验 cookie
 
diff --git a/skills/douyin-upload/scripts/examples/douyin_cli_template.py b/skills/douyin-upload/scripts/examples/douyin_cli_template.py
index 1fc0b53..3c23a41 100644
--- a/skills/douyin-upload/scripts/examples/douyin_cli_template.py
+++ b/skills/douyin-upload/scripts/examples/douyin_cli_template.py
@@ -10,7 +10,9 @@ def run_command(command: list[str]) -> None:
 
 
 def main() -> None:
-    account = "creator"
+    account = "account_a"
+    # account_name is user-defined. One account_name maps to one account file.
+    # You can prepare multiple account names and run them in parallel.
 
     commands = [
         ["sau", "douyin", "login", "--account", account, "--headless"],
diff --git a/skills/douyin-upload/scripts/examples/douyin_commands.ps1 b/skills/douyin-upload/scripts/examples/douyin_commands.ps1
index 5bf8e69..03743c8 100644
--- a/skills/douyin-upload/scripts/examples/douyin_commands.ps1
+++ b/skills/douyin-upload/scripts/examples/douyin_commands.ps1
@@ -1,6 +1,8 @@
 # PowerShell examples for the installed sau CLI.
 
-$account = "creator"
+# account_name is user-defined. One account_name maps to one account file.
+# You can prepare multiple account names and run them in parallel.
+$account = "account_a"
 $video = "videos/demo.mp4"
 $thumbnail = "videos/demo.png"
 $noteImages = @("videos/1.png", "videos/2.png")
diff --git a/skills/douyin-upload/scripts/examples/douyin_commands.sh b/skills/douyin-upload/scripts/examples/douyin_commands.sh
index f3c66c3..55e01b2 100644
--- a/skills/douyin-upload/scripts/examples/douyin_commands.sh
+++ b/skills/douyin-upload/scripts/examples/douyin_commands.sh
@@ -2,7 +2,9 @@
 
 set -euo pipefail
 
-account="creator"
+# account_name is user-defined. One account_name maps to one account file.
+# You can prepare multiple account names and run them in parallel.
+account="account_a"
 video="videos/demo.mp4"
 thumbnail="videos/demo.png"
 
diff --git a/skills/kuaishou-upload/references/cli-contract.md b/skills/kuaishou-upload/references/cli-contract.md
index 7c3da52..2370d45 100644
--- a/skills/kuaishou-upload/references/cli-contract.md
+++ b/skills/kuaishou-upload/references/cli-contract.md
@@ -15,6 +15,9 @@ sau kuaishou login --account <account>
 - 作用:
   - 启动快手登录流程，为指定账号生成或刷新 cookie 文件
   - 如果登录过程中生成本地二维码图片，agent 应优先直接把图片展示/发送给用户扫码，而不是只回传路径
+- 账号说明:
+  - `--account` 传的是用户自定义的 `account_name`，不是固定只能叫 `creator`
+  - 一个 `account_name` 对应一个账号文件，可用于多账号隔离和并发任务
 
 ### 校验 cookie
 
diff --git a/skills/kuaishou-upload/scripts/examples/kuaishou_cli_template.py b/skills/kuaishou-upload/scripts/examples/kuaishou_cli_template.py
index ab6989e..0f3f08a 100644
--- a/skills/kuaishou-upload/scripts/examples/kuaishou_cli_template.py
+++ b/skills/kuaishou-upload/scripts/examples/kuaishou_cli_template.py
@@ -10,7 +10,9 @@ def run_command(command: list[str]) -> None:
 
 
 def main() -> None:
-    account = "creator"
+    account = "account_a"
+    # account_name is user-defined. One account_name maps to one account file.
+    # You can prepare multiple account names and run them in parallel.
 
     commands = [
         ["sau", "kuaishou", "login", "--account", account],
diff --git a/skills/kuaishou-upload/scripts/examples/kuaishou_commands.ps1 b/skills/kuaishou-upload/scripts/examples/kuaishou_commands.ps1
index e9fc042..a35ee7e 100644
--- a/skills/kuaishou-upload/scripts/examples/kuaishou_commands.ps1
+++ b/skills/kuaishou-upload/scripts/examples/kuaishou_commands.ps1
@@ -1,6 +1,8 @@
 # PowerShell examples for the installed sau CLI.
 
-$account = "creator"
+# account_name is user-defined. One account_name maps to one account file.
+# You can prepare multiple account names and run them in parallel.
+$account = "account_a"
 $video = "videos/demo.mp4"
 $thumbnail = "videos/demo.png"
 $noteImages = @("videos/1.png", "videos/2.png", "videos/3.png")
diff --git a/skills/kuaishou-upload/scripts/examples/kuaishou_commands.sh b/skills/kuaishou-upload/scripts/examples/kuaishou_commands.sh
index c15ab73..eb80253 100644
--- a/skills/kuaishou-upload/scripts/examples/kuaishou_commands.sh
+++ b/skills/kuaishou-upload/scripts/examples/kuaishou_commands.sh
@@ -2,7 +2,9 @@
 
 set -euo pipefail
 
-account="creator"
+# account_name is user-defined. One account_name maps to one account file.
+# You can prepare multiple account names and run them in parallel.
+account="account_a"
 video="videos/demo.mp4"
 thumbnail="videos/demo.png"