feat(litman): add litman plugin

external_plugins/litman/.zcode-plugin/plugin.json

@@ -0,0 +1,25 @@
+{
+  "name": "litman",
+  "version": "0.1.0",
+  "skills": "./skills",
+  "description": "Set up litman, a local literature manager driven by your AI assistant: installs litman with your consent and connects its skills to ZCode.",
+  "description_i18n": {
+    "en": "Set up litman, a local literature manager driven by your AI assistant: installs litman with your consent and connects its skills to ZCode.",
+    "zh-CN": "接入 litman（由 AI 助手打理的本地文献库）：经你同意后安装 litman，并把它的 skill 接入 ZCode。"
+  },
+  "author": {
+    "name": "Qingxin Wang",
+    "url": "https://litman.dev"
+  },
+  "homepage": "https://litman.dev",
+  "repository": "https://github.com/wqx1999/litman",
+  "license": "MIT",
+  "keywords": [
+    "litman",
+    "literature",
+    "papers",
+    "pdf",
+    "reference-manager",
+    "research"
+  ]
+}

external_plugins/litman/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Qingxin Wang
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

external_plugins/litman/README.md

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+# litman for ZCode
+
+[中文](./README_CN.md)
+
+[litman](https://litman.dev) keeps every paper you read on your own computer and
+lets your AI assistant do the filing. This plugin connects it to ZCode: when
+litman is missing, the agent offers to install it, then hands over to litman's
+own skills.
+
+litman is a separate open-source program ([GitHub](https://github.com/wqx1999/litman),
+AGPL-3.0). It works without this plugin; the plugin only installs it and
+connects it to ZCode.
+
+## Use
+
+In any session, ask about litman or your literature library, for example
+"set up litman for me". Or type `/litman` in the input box and pick
+`$litman-setup` under Skills.
+
+The `litman-setup` skill:
+
+1. Runs `lit --version`. If litman and its skills are already there, it hands
+   over to them.
+2. Otherwise asks whether to install litman, and installs it only after a clear
+   yes, with the official one-line installer.
+3. Runs `lit install-skill --agent zcode`, which copies litman's skills to
+   `~/.agents/skills`.
+4. If you have no library yet, asks where to keep it and runs `lit init`.
+
+ZCode may load litman's skills only in a new session. The agent can open your
+library as a new ZCode workspace with `lit agent zcode`.
+
+## Skills
+
+| Skill | Entry | Purpose |
+| --- | --- | --- |
+| `litman-setup` | `$litman-setup`, or triggered by context | Check, install and connect litman |
+
+## What it does on your machine
+
+- **Network**: downloads the installer from `get.litman.dev`. The installer
+  installs [uv](https://github.com/astral-sh/uv), a Python runtime managed by
+  uv, and litman from PyPI. Callers in mainland China are served a version of
+  the installer that downloads from mirrors reachable there.
+- **Commands**: the installer, and `lit` commands (`lit --version`,
+  `lit install-skill`, `lit vault list`, `lit init`, `lit agent`). ZCode asks
+  for approval as usual.
+- **Files**: uv and litman under your home directory (`~/.local/bin` and uv's
+  tool directory); the installer adds that directory to your `PATH` if needed
+  and creates a litman shortcut. litman's skills go to `~/.agents/skills`; your
+  library goes to the folder you choose.
+- **No** hooks, MCP servers, model or API services of its own, or credentials.
+
+## License
+
+The plugin is MIT-licensed and bundles no third-party code. litman is
+AGPL-3.0; uv is MIT / Apache-2.0.
+
+Questions and bugs: [litman issues](https://github.com/wqx1999/litman/issues).

external_plugins/litman/README_CN.md

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+# litman ZCode 插件
+
+[English](./README.md)
+
+[litman](https://litman.dev) 把你读过的每篇论文都存在你自己的电脑上，归档交给
+AI 助手来做。本插件把它接入 ZCode：没装 litman 时，agent 会问你要不要装，装好后
+交给 litman 自己的 skill。
+
+litman 是独立的开源程序（[GitHub](https://github.com/wqx1999/litman)，AGPL-3.0），
+不装本插件也能用；插件只负责把它装上、接入 ZCode。
+
+## 使用
+
+在任意会话里提到 litman 或你的文献库即可，例如「帮我装 litman」；也可以在输入框打
+`/litman`，在「技能」里选 `$litman-setup`。
+
+`litman-setup` skill 的流程：
+
+1. 运行 `lit --version`。已经装好 litman 和它的 skill，就直接交给它们。
+2. 没装就先问你要不要装，你明确同意后才用官方一行安装命令安装。
+3. 运行 `lit install-skill --agent zcode`，把 litman 的 skill 复制到
+   `~/.agents/skills`。
+4. 还没有文献库时，问你放在哪，再运行 `lit init`。
+
+ZCode 可能要在新会话里才加载 litman 的 skill。agent 可以用 `lit agent zcode`
+把你的文献库作为新的 ZCode 工作区打开。
+
+## Skills
+
+| Skill | 入口 | 用途 |
+| --- | --- | --- |
+| `litman-setup` | `$litman-setup`，或按上下文自动触发 | 检查、安装并接入 litman |
+
+## 会在你的电脑上做什么
+
+- **网络访问**：从 `get.litman.dev` 下载安装脚本。安装脚本会安装
+  [uv](https://github.com/astral-sh/uv)、由 uv 管理的 Python 运行时，以及 PyPI 上的
+  litman。从中国大陆访问时，拿到的安装脚本会改从大陆可访问的镜像下载。
+- **命令执行**：安装脚本，以及 `lit` 命令（`lit --version`、`lit install-skill`、
+  `lit vault list`、`lit init`、`lit agent`）。ZCode 照常弹出审批。
+- **文件写入**：uv 和 litman 装在你的用户目录下（`~/.local/bin` 和 uv 的工具目录）；
+  需要时安装脚本会把该目录加进 `PATH`，并创建 litman 快捷方式。litman 的 skill
+  写到 `~/.agents/skills`；文献库放在你选的文件夹。
+- **没有** Hook、MCP 服务、自带的模型或 API 服务，也不涉及任何凭据。
+
+## 许可证
+
+本插件使用 MIT 许可证，不含第三方代码。litman 使用 AGPL-3.0；uv 使用 MIT / Apache-2.0。
+
+问题和 bug：[litman issues](https://github.com/wqx1999/litman/issues)。

external_plugins/litman/skills/litman-setup/SKILL.md

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+---
+name: litman-setup
+description: Install litman, the local literature manager, and connect it to ZCode. Use when the user mentions litman, `lit`, or their literature vault (文献库) and litman's own `lit-library` skill is not available, or when a `lit` command is not found.
+---
+
+# litman setup
+
+litman (https://litman.dev) is a local literature manager driven by the `lit`
+command. This skill only gets litman installed and connected to ZCode. After
+that, litman's own skills (`lit-library`, `lit-reading`) do the real work.
+
+## 1. Check
+
+Run `lit --version`.
+
+- It works and the `lit-library` skill is available: stop here and follow
+  `lit-library` / `lit-reading`.
+- It works but there is no `lit-library` skill: go to step 4.
+- `lit` is not found: go to step 2.
+
+## 2. Ask
+
+Ask the user, in their language, whether to install litman. One or two
+sentences: litman is a local literature manager, and installing it runs the
+official installer from get.litman.dev. Do not install without a clear yes.
+
+## 3. Install
+
+Run the official one-line installer for this system:
+
+- macOS / Linux: `curl -LsSf https://get.litman.dev/install.sh | sh`
+- Windows (PowerShell): `powershell -ExecutionPolicy ByPass -c "irm https://get.litman.dev/install.ps1 | iex"`
+
+ZCode may not see the new PATH until it restarts, so `lit` can still be "not
+found" right after installing. Then call it by its full path:
+`~/.local/bin/lit`, on Windows `%USERPROFILE%\.local\bin\lit.exe` (if the
+installer printed another directory, use that one).
+
+## 4. Connect to ZCode
+
+Run `lit install-skill --agent zcode` (with the full path if needed). It copies
+litman's skills to `~/.agents/skills`, where ZCode finds them. If it reports
+out-of-date copies, run it again with `--force`.
+
+## 5. Vault
+
+Run `lit vault list`. If no vault is registered, ask the user where to keep
+their library, then run `lit init "<parent folder>"` (it creates
+`<parent folder>/literature_vault` and makes it the active vault).
+
+## 6. Hand over
+
+Tell the user litman is ready. Do not list or explain `lit` commands from
+memory: litman's own skills cover them, and `lit --help` lists them.
+
+ZCode may load the new skills only in a new session: if `lit-library` is still
+not available here, offer to run `lit agent zcode`, which opens the active
+vault as a ZCode workspace, where litman's skills are available. From then on
+use `lit-library` / `lit-reading`.

marketplace.json

@@ -1499,6 +1499,29 @@
         "image-to-video",
         "mcp"
       ]
+    },
+    {
+      "name": "litman",
+      "source": "./external_plugins/litman",
+      "description": "Set up litman, a local literature manager driven by your AI assistant: installs litman with your consent and connects its skills to ZCode.",
+      "description_i18n": {
+        "en": "Set up litman, a local literature manager driven by your AI assistant: installs litman with your consent and connects its skills to ZCode.",
+        "zh-CN": "接入 litman（由 AI 助手打理的本地文献库）：经你同意后安装 litman，并把它的 skill 接入 ZCode。"
+      },
+      "version": "0.1.0",
+      "author": {
+        "name": "Qingxin Wang",
+        "url": "https://litman.dev"
+      },
+      "category": "productivity",
+      "keywords": [
+        "litman",
+        "literature",
+        "papers",
+        "pdf",
+        "reference-manager",
+        "research"
+      ]
     }
   ]
 }