diff --git a/.gitignore b/.gitignore
index efdbdaf0..95e20011 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@ node_modules
 dist
 out
 .env
+.env.*
 .DS_Store
 .eslintcache
 *.tsbuildinfo
diff --git a/README.en.md b/README.en.md
index bfd429f9..9fdea1fc 100644
--- a/README.en.md
+++ b/README.en.md
@@ -6,8 +6,6 @@
 
 <p align="center"><strong>Building the most user-friendly AI assistant for local office documents</strong></p>
 
-<p align="center">Read your files. Edit your documents. Review the changes. Get work done.</p>
-
 <p align="center">
   <a href="./README.md">简体中文</a> · <strong>English</strong>
 </p>
@@ -49,18 +47,17 @@ See the [website](https://www.guanzhangai.cn/zh) for demos and real task example
 2. Choose an available model or configure your own endpoint and API key.
 3. Create a partner, add a working folder, and give it a task. To use the knowledge base, download an embedding model and build an index first.
 
-The app is free; model costs depend on the service you choose. Files and indexes are stored locally. Calls to external models or network services send relevant content as needed for the task.
-
 ## Roadmap
 
 Join the discussion and help shape these plans:
 
-| Direction                    | Planned work                                                               |
-| ---------------------------- | -------------------------------------------------------------------------- |
-| 🌍 Chinese and English       | Chinese and English UI, plus evaluation of English system and tool prompts |
-| 🧩 Skill integration         | Connect and manage custom and third-party Skills                           |
-| 🧭 Browser data import       | Import data from your browser, starting with bookmarks and history         |
-| 🖼️ Multimodal knowledge base | Parse, index, and retrieve images and audio with source references         |
+| Direction                    | Planned work                                                       |
+| ---------------------------- | ------------------------------------------------------------------ |
+| 🌍 English support           | An English user interface                                          |
+| 🔤 English knowledge base    | English embedding models and indexing                              |
+| 🧩 Skill integration         | Connect and manage custom and third-party Skills                   |
+| 🧭 Browser data import       | Import data from your browser, starting with bookmarks and history |
+| 🖼️ Multimodal knowledge base | Parse, index, and retrieve images and audio with source references |
 
 ## Get involved
 
@@ -83,7 +80,7 @@ See the [contribution guide](./CONTRIBUTING.en.md#development-and-validation) fo
 
 ## Browser extension
 
-A separately maintained bookmark viewer and URL copying tool: [Chrome](https://chromewebstore.google.com/detail/ncurator-knowledge-base-a/jdlfflbeekclkgcckcfombmfojmcdeio?hl=zh-CN) · [Microsoft Edge](https://microsoftedge.microsoft.com/addons/detail/hkdfdbpkmkpooopbkdghecbaipeoijpj).
+A separately maintained bookmark viewer and URL copying tool: [Source repository](https://github.com/Yoan98/Ncurator-Extension) · [Chrome](https://chromewebstore.google.com/detail/ncurator-knowledge-base-a/jdlfflbeekclkgcckcfombmfojmcdeio?hl=zh-CN) · [Microsoft Edge](https://microsoftedge.microsoft.com/addons/detail/hkdfdbpkmkpooopbkdghecbaipeoijpj).
 
 ## License
 
diff --git a/README.md b/README.md
index e4148a44..62a25d75 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,7 @@ pnpm dev
 
 ## 浏览器插件
 
-独立维护的收藏夹查看与链接复制工具：[Chrome](https://chromewebstore.google.com/detail/ncurator-knowledge-base-a/jdlfflbeekclkgcckcfombmfojmcdeio?hl=zh-CN) · [Microsoft Edge](https://microsoftedge.microsoft.com/addons/detail/hkdfdbpkmkpooopbkdghecbaipeoijpj)。
+独立维护的收藏夹查看与链接复制工具：[源码仓库](https://github.com/Yoan98/Ncurator-Extension) · [Chrome](https://chromewebstore.google.com/detail/ncurator-knowledge-base-a/jdlfflbeekclkgcckcfombmfojmcdeio?hl=zh-CN) · [Microsoft Edge](https://microsoftedge.microsoft.com/addons/detail/hkdfdbpkmkpooopbkdghecbaipeoijpj)。
 
 ## 许可证
 
diff --git a/doc/deploy/design.md b/doc/deploy/design.md
index 61c3c7a8..6c706d1d 100644
--- a/doc/deploy/design.md
+++ b/doc/deploy/design.md
@@ -4,11 +4,11 @@
 
 ### Windows
 
-本地 Windows x64：Node.js 22 x64、项目指定 pnpm、Python 3.12 x64、Git、tar；发 COS 时还需 AWS CLI 与 COS 存储配置。仅未来海外版才需要 R2 配置。`pnpm release:doctor` 检查本机条件。prepare / test / publish 只消费本机候选包。
+本地 Windows x64：Node.js 22 x64、项目指定 pnpm、Python 3.12 x64、Git、tar；发布时还需 AWS CLI、COS 存储配置，以及已登录且具备公开仓库写权限的 GitHub CLI。仅未来海外版才需要 R2 配置。`pnpm release:doctor` 检查本机条件。prepare / test / publish 只消费本机候选包。
 
 ### macOS
 
-prepare 必须在 Apple Silicon Mac；需已信任的 `Ncurator Update Signing` P12（自建更新签名，`timestamp: none`、`notarize: false`，非 Apple Developer ID 公证）。候选包须完成正式包 E2E。不构建、测试或发布 Intel Mac。
+prepare 必须在 Apple Silicon Mac；需已信任的 `Ncurator Update Signing` P12（自建更新签名，`timestamp: none`、`notarize: false`，非 Apple Developer ID 公证）。候选包须完成正式包 E2E；发布时需 AWS CLI、COS 存储配置及已登录的 GitHub CLI。不构建、测试或发布 Intel Mac。
 
 ### 构建与审计硬约束
 
@@ -43,15 +43,15 @@ CDN 节点缓存遵循源站 `Cache-Control`：安装包为 `public, max-age=315
 
 ### GitHub Releases 手动下载
 
-公开仓库 `Yoan98/Ncurator` 的 Releases 作为安装包手动下载镜像，上传与 COS 上线版本相同、已完成正式包回归的文件，不重新构建。Windows 与 macOS 沿用各自独立 Tag，每条 Release 包含对应平台的 EXE 或 DMG、`SHA256SUMS` 和版本说明；自动更新文件继续由 COS 通道提供。
+公开仓库 `Yoan98/Ncurator` 的 Releases 作为安装包下载镜像，由现有平台发布命令通过 GitHub CLI 自动上传与 COS 上线版本相同、已完成正式包回归的文件，不重新构建。GitHub 登录凭证由 CLI 管理，不新增项目密钥配置。Windows 与 macOS 沿用各自独立 Tag，每条 Release 包含对应平台的 EXE 或 DMG、`SHA256SUMS` 和版本说明；自动更新文件继续由 COS 通道提供。
 
-Release Tag 必须对应实际构建源码。首次公开或补发旧版本时，先核对公开源码快照与原构建代码的对应关系，不把含凭证的私有历史整体推入公开仓库。GitHub 自动附带的 Source code 压缩包不替代安装包，也不替代核对完整对应源码的义务。
+Release 的公开 annotated Tag 必须与候选 bundle 的构建 commit 完全一致；公开源码后从该源码创建新的 Tag 和候选包。自动流程不代建 Tag，不把含凭证的私有历史推入公开仓库，也不处理历史包与公开快照的 commit 映射。GitHub 自动附带的 Source code 压缩包不替代安装包，也不替代核对完整对应源码的义务。
 
 Windows 和 macOS 独立发布，GitHub 的 Latest 标记不能代表两个平台都已更新。README 使用仓库 Releases 列表作为 GitHub 下载入口，不依赖跨平台共用的 `releases/latest/download` 地址。具体上传与恢复操作见[发布流程](./release.md#31-github-releases-镜像)。
 
 仅当有意发布未来海外版时才切 R2（非当前常规循环）：`RELEASE_STORAGE_TARGET=r2`，并设置 `R2_ACCESS_KEY_ID`、`R2_SECRET_ACCESS_KEY`、`R2_ACCOUNT_ID`、`R2_BUCKET_NAME`、`R2_PUBLIC_BASE_URL=https://download.ncurator.com`。
 
-publish 上传候选与 fragment，更新该平台自动更新 metadata 与官网 manifest，验证公开 yml / 清单 / artifacts 的大小、sha512 与 manifest URL（安装包 URL 须以用户可见文件名结尾）。验证成功后标记 `published`，清理本地 `tests/logs/**`，并清理该平台更早 artifacts（含旧 `release-status/`）。失败、prepare-only、test-only 不清理 logs。
+publish 先校验 GitHub 源码身份并准备草稿及附件，再上传 COS 候选与 fragment，更新该平台自动更新 metadata 与官网 manifest，验证公开 yml / 清单 / artifacts 的大小、sha512 与 manifest URL（安装包 URL 须以用户可见文件名结尾）；随后公开 GitHub Release，并通过匿名下载核对大小与 SHA-256。两边成功后才标记 `published`，清理本地 `tests/logs/**`，并清理该平台更早 artifacts（含旧 `release-status/`）。失败、prepare-only、test-only 不清理 logs。跨服务发布不具备原子性；中断保留同一候选包，重跑 publish 时检查实际官网与更新通道状态、补齐 GitHub 草稿附件并继续，不重建、不覆盖已有附件，也不把较新通道降级。
 
 ### 本地保留与清理
 
diff --git a/doc/deploy/release.md b/doc/deploy/release.md
index e337efdf..6ac47636 100644
--- a/doc/deploy/release.md
+++ b/doc/deploy/release.md
@@ -1,6 +1,6 @@
 # 桌面端发布流程
 
-官网和应用内自动更新正式发布使用腾讯云 COS，一次发布完成后不再把同一 Tag 上传到 Cloudflare R2。GitHub Releases 可额外提供同一正式安装包的手动下载镜像，按 3.1 节单独上传；现有 `release:win` / `release:mac` 不会自动创建 GitHub Release。R2 仅供未来海外版显式使用 `RELEASE_STORAGE_TARGET=r2`。当前发布平台为 Windows x64 和 macOS arm64，平台 Tag 分别使用 `windows-vX.Y.Z` 与 `mac-vX.Y.Z`，版本号独立递增。
+官网和应用内自动更新正式发布使用腾讯云 COS，一次发布完成后不再把同一 Tag 上传到 Cloudflare R2。GitHub Releases 同时提供同一正式安装包的下载镜像；`release:win` / `release:mac` 的 `--publish-only` 自动完成两边发布，详见 3.1 节。R2 仅供未来海外版显式使用 `RELEASE_STORAGE_TARGET=r2`。当前发布平台为 Windows x64 和 macOS arm64，平台 Tag 分别使用 `windows-vX.Y.Z` 与 `mac-vX.Y.Z`，版本号独立递增。
 
 ## 1. 发布流程
 
@@ -12,14 +12,16 @@
 4. 对比当前 Tag 与上一已发布同平台版本，评估改动影响并确定正式包回归范围。
 5. 在实际安装的候选包上完成确定范围内的正式包 E2E。
 6. 记录构建信息、回归结果和剩余风险。
-7. 发布测试通过的同一份候选包到 COS，验证公开下载和更新通道。
-8. 清理本地临时工作区和过期候选包。
+7. 校验 GitHub 登录、公开仓库权限及 Tag 对应的构建 commit，创建或恢复草稿，上传同一安装包和校验文件。
+8. 将同一候选包发布到 COS，验证官网下载和自动更新通道。
+9. 公开 GitHub Release，匿名下载安装包并校验大小与 SHA-256。
+10. 两边全部验证成功后，标记发布完成并清理本地临时工作区和过期候选包。
 
 候选包测试或公开验证失败时，不得放宽构建、审计、哈希和公开通道校验。
 
 ### 1.1 发布准备与 Tag
 
-必须在干净且与 `origin/main` 完全一致的 `main` 上开始。新版本必须高于该平台当前仍存在的最高 Tag。发版机须具备 live `.env`，包括 `AI_LIVE_KEY_*`；默认 provider 为 `dashscope`。
+必须在干净且与 `origin/main` 完全一致的 `main` 上开始。公开发布前应已完成桌面端仓库迁移，`origin` 指向 `Yoan98/Ncurator`，后续 Tag 与构建均基于公开源码。新版本必须高于该平台当前仍存在的最高 Tag。发版机须具备 live `.env`，包括 `AI_LIVE_KEY_*`；默认 provider 为 `dashscope`。
 
 `release:start` 会依次完成：
 
@@ -50,7 +52,7 @@ pnpm release:abort --tag windows-vX.Y.Z
 # 或 mac-vX.Y.Z
 ```
 
-`release:abort` 拒绝删除已 live 或本地状态为 `published` 的 Tag，同时删除远端和本地 annotated Tag 及该 Tag 的本地候选目录。`main` 上已经产生的 prepare 提交会保留。已上线版本有问题时必须发布更高版本，不能 abort live Tag。
+`release:abort` 拒绝删除已 live 或本地状态为 `published` 的 Tag，同时删除该 Tag 的 GitHub 草稿、远端和本地 annotated Tag 及本地候选目录；若 GitHub Release 已公开则拒绝中止。`main` 上已经产生的 prepare 提交会保留。已上线版本有问题时必须发布更高版本，不能 abort live Tag。
 
 ## 2. 候选包与正式包回归
 
@@ -65,7 +67,7 @@ prepared → ready → published
              └→ rejected
 ```
 
-正式包 E2E 通过后候选包变为 `ready`；测试失败变为 `rejected`；公开发布并验证成功后变为 `published`。候选包、bundle 和对象存储布局见 [`design.md`](./design.md)。
+正式包 E2E 通过后候选包变为 `ready`；测试失败变为 `rejected`；COS 和 GitHub 均公开发布并验证成功后变为 `published`。候选包、bundle 和对象存储布局见 [`design.md`](./design.md)。
 
 ### 2.2 影响评估
 
@@ -100,7 +102,7 @@ git diff <previous-platform-tag>..<current-platform-tag>
 
 ## 3. 发布与公开验证
 
-publish 只读取已经测试通过的候选包，不重新构建。默认发布到 COS，验证国内公开下载、更新 metadata、公开 manifest、文件大小、sha512 和 URL 成功后才算完成。对象键、CDN Cache-Control 和公开 URL 见 [`design.md`](./design.md)。
+publish 只读取已经测试通过的候选包，不重新构建。先准备 GitHub 草稿与附件，再发布 COS 并验证国内下载、更新 metadata、公开 manifest、文件大小、sha512 和 URL，最后公开并验证 GitHub Release；两边全部通过才算完成。对象键、CDN Cache-Control 和公开 URL 见 [`design.md`](./design.md)。
 
 真实发布默认锁定。用户已批准本次上线后，在当前终端设置：
 
@@ -114,34 +116,34 @@ export NCURATOR_ALLOW_LIVE_PUBLISH=publish-to-production
 
 ### 3.1 GitHub Releases 镜像
 
-前置条件：桌面端源码已发布至 `Yoan98/Ncurator`，该版本的公开 Tag 与实际构建代码对应；同一安装包已经过正式包回归并在 COS 上线验证。首次公开或补发历史版本时，核对并记录原构建源码与公开快照的对应关系，不直接推送含凭证的私有历史，不把旧安装包挂在无关源码 Tag 下。
-
-1. 在发版机使用 `verifyReleaseBundle` 复验原候选 bundle、文件大小与哈希，取 `role: installer` 的 EXE 或 DMG，保持原公开文件名和字节内容。
-2. 准备 `SHA256SUMS`：使用 bundle 中该安装包的 `sha256`，每行格式为 `<sha256>  <公开安装包文件名>`。准备版本说明文件，写明平台、版本、更新内容、安装方式及对应源码 Tag；有源码快照映射时说明其对应关系。
-3. 在 GitHub 的 Releases 页面新建草稿，选择已核对的 Tag，上传安装包和 `SHA256SUMS`。只上传对应平台的安装包，不上传候选目录、日志、`.env` 或签名材料。
-4. 核对草稿中的平台、Tag、文件名和版本说明后发布。GitHub 自动生成的 Source code 下载项是源码压缩包，普通用户安装应选择 EXE / DMG。
-5. 从公开 Release 下载安装包，核对大小与 SHA-256 和原 bundle 一致，再确认 README 的 Releases 入口可访问该版本。GitHub 失败不改动已上线的 COS 下载和自动更新通道。
-
-也可使用已安装并登录、具备目标仓库发布权限的 GitHub CLI 准备草稿。以下命令中的 Tag 和文件路径应替换为核对过的本地文件；`--verify-tag` 防止从默认分支误建 Tag：
+发版机安装 [GitHub CLI](https://cli.github.com/)，并使用具有 `Yoan98/Ncurator` 写权限的账号完成一次浏览器授权。macOS 可用 `brew install gh`；Windows 在实际发版机安装 CLI 并单独登录。
 
 ```bash
-release_tag="mac-vX.Y.Z"
-release_installer="/absolute/path/馆长-X.Y.Z-macos-arm64.dmg"
-gh release create "$release_tag" "$release_installer" "/absolute/path/SHA256SUMS" \
-  --repo Yoan98/Ncurator --verify-tag --draft \
-  --title "馆长 X.Y.Z · macOS arm64" \
-  --notes-file "/absolute/path/release-notes.md"
+gh auth login --hostname github.com --web --git-protocol ssh --skip-ssh-key
+gh auth status --hostname github.com
 ```
 
-Windows 版本使用 `windows-vX.Y.Z`、对应 EXE 及平台标题。上传中断时检查已有草稿，通过 Releases 页面或 `gh release upload` 补齐缺失附件；不使用 `--clobber` 覆盖已公开安装包。公开版本内容有问题时发布更高版本。
+登录凭证由 CLI 管理，不写入项目 `.env`，无需新增 GitHub Token 配置。每个平台继续使用原有发布命令，GitHub 不另设发布开关或上传步骤。
 
-操作依据：[GitHub Releases](https://docs.github.com/en/repositories/releasing-projects-on-github/about-releases)、[gh release create](https://cli.github.com/manual/gh_release_create)、[gh release upload](https://cli.github.com/manual/gh_release_upload)。
+`--publish-only` 按以下规则执行：
+
+1. 复验已测试的候选 bundle，并核对公开仓库的 annotated Tag 指向同一构建 commit。Tag 不存在、源码不一致、登录或权限不足时，在写入 COS 前失败；脚本不会代建或推送 Tag。
+2. 创建 GitHub 草稿，或继续使用同 Tag 的已有草稿。只上传对应平台的 EXE / DMG 和 `SHA256SUMS`；版本说明取 Tag 注释并附源码和官网更新日志入口。保留安装包公开文件名，不上传更新文件、bundle、日志或签名材料。
+3. 校验已有附件的大小和 SHA-256；缺少服务端 digest 的旧附件下载复验。中断后只补齐缺失附件，可清除草稿内上传失败留下的 `starter` 附件；内容不同则失败，不覆盖已有安装包。
+4. 发布并验证 COS。若官网下载与更新通道已经指向该候选包，复验后直接继续 GitHub；若只是上传了文件但尚未切换通道，则继续完成 COS 发布。拒绝把公开通道降级到较旧版本。
+5. 将草稿公开，再通过匿名下载复验附件大小与 SHA-256；已公开且内容相同的 Release 只验证。全部成功后候选包才标记 `published`。
+
+Windows 与 macOS 保持独立 Tag 和 Release，不设置跨平台共用的 Latest 标记。GitHub 的 Source code 下载项是源码压缩包，用户安装应选择 EXE / DMG。
+
+首次公开应从清理后的公开源码创建 Tag 和候选包，不推送含凭证、内部资料的私有历史。自动发布要求公开 Tag 与候选 commit 完全一致，不处理历史安装包与公开快照的 commit 映射；补发旧版本需另行核对源码对应关系。
+
+操作依据：[CLI 登录](https://cli.github.com/manual/gh_auth_login)、[创建 Release](https://cli.github.com/manual/gh_release_create)、[上传附件](https://cli.github.com/manual/gh_release_upload)。
 
 ## 4. 中断与恢复
 
 - Tag 已创建但 prepare 中断：同 Tag 重跑 `--prepare-only`；如果源码已改变且版本尚未上线，先 abort 再用同版本重打。
 - 候选包已生成但测试中断：对同一候选包重跑 `--test-only`。
-- 上传或 finalize 中断：对同一候选包恢复 publish，或执行 `release:storage:finalize`。
+- 上传、COS finalize、GitHub 公开或下载验证中断：修复原因后，对同一候选包重跑原平台的 `--publish-only`；按已有附件和公开通道继续，不重新构建、不覆盖已公开附件。COS 已上线但 GitHub 失败时保留候选包和测试证据，不能宣称整次发布完成；`release:storage:finalize` 只恢复 COS，不完成 GitHub。
 - 未上线整轮作废：abort 后用同一版本重打，不要另起版本号。
 - 已发布版本有问题：发布更高版本；回退下载通道不会让已安装客户端自动降级。
 - 同一 Tag 的对象已存在但哈希不同：禁止覆盖；未上线时执行 abort 后用同一版本重打。
diff --git a/scripts/release/abort.mjs b/scripts/release/abort.mjs
index f7e41285..4aff5b02 100644
--- a/scripts/release/abort.mjs
+++ b/scripts/release/abort.mjs
@@ -6,6 +6,7 @@ import { promisify } from 'node:util'
 import { resolveCandidateDirectory } from './candidate.mjs'
 import { findLiveChannelsForTag } from './shared/live-tag.mjs'
 import { parseReleaseTag } from './tag.mjs'
+import { createGitHubReleasePublisher } from './github.mjs'
 
 const execFileAsync = promisify(execFile)
 const ROOT = process.cwd()
@@ -98,6 +99,8 @@ if (!remoteExists && !localExists) {
   throw new Error(`tag not found locally or on origin: ${releaseTag}`)
 }
 
+await createGitHubReleasePublisher({ root: ROOT }).deleteDraft(releaseTag)
+
 if (remoteExists) {
   await execFileAsync('git', ['push', 'origin', `:refs/tags/${releaseTag}`], { cwd: ROOT })
   process.stdout.write(`[release] deleted origin tag ${releaseTag}\n`)
diff --git a/scripts/release/candidate.mjs b/scripts/release/candidate.mjs
index ed1b4949..c0b74fb7 100644
--- a/scripts/release/candidate.mjs
+++ b/scripts/release/candidate.mjs
@@ -152,14 +152,22 @@ export const recordCandidateE2E = async ({
   return { ...candidate, state }
 }
 
-export const assertCandidatePublishable = async ({ tag, platform, commit }) => {
+export const assertCandidatePublishable = async ({
+  tag,
+  platform,
+  commit,
+  allowPublished = false
+}) => {
   const candidate = await readReleaseCandidate({ tag, platform })
   if (candidate.state.commit !== commit) {
     throw new Error(
       `candidate commit ${candidate.state.commit} does not match ${tag} commit ${commit}`
     )
   }
-  if (candidate.state.status !== 'ready') {
+  if (
+    candidate.state.status !== 'ready' &&
+    !(allowPublished && candidate.state.status === 'published')
+  ) {
     throw new Error(
       `candidate ${tag} ${platform} is ${candidate.state.status}; prepare or test it before publishing`
     )
diff --git a/scripts/release/github.mjs b/scripts/release/github.mjs
new file mode 100644
index 00000000..a38df6c6
--- /dev/null
+++ b/scripts/release/github.mjs
@@ -0,0 +1,234 @@
+import { execFile } from 'node:child_process'
+import { createHash } from 'node:crypto'
+import { copyFile, mkdir, mkdtemp, readFile, rm, writeFile } from 'node:fs/promises'
+import os from 'node:os'
+import path from 'node:path'
+import { promisify } from 'node:util'
+import { resolveReleaseAssetPath } from './r2/fragment-contract.mjs'
+import { assertLivePublishAllowed } from './storage/config.mjs'
+import { parseReleaseTag } from './tag.mjs'
+import { fetchWithRetry } from './shared/http.mjs'
+
+export const GITHUB_RELEASE_REPOSITORY = 'Yoan98/Ncurator'
+const REPOSITORY_PATH = `repos/${GITHUB_RELEASE_REPOSITORY}`
+const REPOSITORY_URL = `https://github.com/${GITHUB_RELEASE_REPOSITORY}`
+const execFileAsync = promisify(execFile)
+const sha256 = (content) => createHash('sha256').update(content).digest('hex')
+
+export const createGitHubReleasePublisher = ({
+  root = process.cwd(),
+  execute = execFileAsync,
+  fetchImpl = fetchWithRetry
+} = {}) => {
+  const gh = async (args) => {
+    try {
+      return await execute('gh', args, {
+        cwd: root,
+        timeout: 20 * 60_000,
+        maxBuffer: 10 * 1024 * 1024,
+        env: { ...process.env, GH_PROMPT_DISABLED: '1' }
+      })
+    } catch (error) {
+      if (error.code === 'ENOENT') {
+        throw new Error(
+          'GitHub CLI is missing; install gh and run gh auth login --hostname github.com'
+        )
+      }
+      throw error
+    }
+  }
+  const api = async (endpoint) =>
+    JSON.parse((await gh(['api', '--hostname', 'github.com', '--method', 'GET', endpoint])).stdout)
+  const releaseArgs = (tag) => [tag, '--repo', `github.com/${GITHUB_RELEASE_REPOSITORY}`]
+
+  const readRelease = async (tag) => {
+    try {
+      // CLI resolves draft releases too; REST's /releases/tags endpoint only finds published ones.
+      const { databaseId } = JSON.parse(
+        (await gh(['release', 'view', ...releaseArgs(tag), '--json', 'databaseId'])).stdout
+      )
+      return await api(`${REPOSITORY_PATH}/releases/${databaseId}`)
+    } catch (error) {
+      if (/^release not found\s*$/mu.test(String(error.stderr || error.message))) return undefined
+      throw error
+    }
+  }
+
+  const verifySource = async (bundle) => {
+    const repository = await api(REPOSITORY_PATH)
+    if (repository.private || !repository.permissions?.push) {
+      throw new Error(
+        `GitHub publication requires write access to public ${GITHUB_RELEASE_REPOSITORY}`
+      )
+    }
+    const reference = await api(`${REPOSITORY_PATH}/git/ref/tags/${bundle.tag}`)
+    if (reference.object?.type !== 'tag') {
+      throw new Error(`GitHub ${bundle.tag} must be an annotated tag`)
+    }
+    const tag = await api(`${REPOSITORY_PATH}/git/tags/${reference.object.sha}`)
+    if (tag.object?.type !== 'commit' || tag.object.sha !== bundle.commit) {
+      throw new Error(`GitHub ${bundle.tag} does not match candidate commit ${bundle.commit}`)
+    }
+    return tag.message.trim()
+  }
+
+  const verifyAssets = async (release, files) => {
+    if (!release || release.prerelease || release.assets.length !== files.length) {
+      throw new Error('GitHub Release must contain only the installer and SHA256SUMS')
+    }
+    for (const file of files) {
+      const asset = release.assets.find((entry) => entry.name === file.name)
+      if (!asset || asset.state !== 'uploaded' || asset.size !== file.size) {
+        throw new Error(`GitHub Release asset is missing or incomplete: ${file.name}`)
+      }
+      if (asset.digest) {
+        if (asset.digest !== `sha256:${file.sha256}`) {
+          throw new Error(`GitHub Release asset hash differs: ${file.name}`)
+        }
+      } else {
+        // Older GitHub assets may have no digest. Verify their bytes before reusing them.
+        const directory = await mkdtemp(path.join(os.tmpdir(), 'ncurator-github-verify-'))
+        try {
+          await gh([
+            'release',
+            'download',
+            ...releaseArgs(release.tag_name),
+            '--pattern',
+            file.name,
+            '--dir',
+            directory
+          ])
+          const content = await readFile(path.join(directory, file.name))
+          if (content.length !== file.size || sha256(content) !== file.sha256) {
+            throw new Error(`GitHub Release asset hash differs: ${file.name}`)
+          }
+        } finally {
+          await rm(directory, { recursive: true, force: true })
+        }
+      }
+    }
+  }
+
+  return {
+    async prepare(candidate) {
+      assertLivePublishAllowed()
+      if (!['ready', 'published'].includes(candidate.state.status)) {
+        throw new Error('GitHub publication requires a tested release candidate')
+      }
+      const { bundle, directory } = candidate.verified
+      const annotation = await verifySource(bundle)
+      const installer = bundle.files.find((file) => file.role === 'installer')
+      const staging = path.join(candidate.directory, 'github')
+      await mkdir(staging, { recursive: true })
+      const installerPath = await resolveReleaseAssetPath(directory, installer)
+      const uploadPath =
+        path.basename(installerPath) === installer.name
+          ? installerPath
+          : path.join(staging, installer.name)
+      if (uploadPath !== installerPath) await copyFile(installerPath, uploadPath)
+      const sums = `${installer.sha256}  ${installer.name}\n`
+      const sumsPath = path.join(staging, 'SHA256SUMS')
+      await writeFile(sumsPath, sums, 'utf8')
+      const files = [
+        { ...installer, path: uploadPath },
+        { name: 'SHA256SUMS', path: sumsPath, size: Buffer.byteLength(sums), sha256: sha256(sums) }
+      ]
+      const { family, version } = parseReleaseTag(bundle.tag)
+      const platform = family === 'windows' ? 'Windows x64' : 'macOS arm64'
+      const notesPath = path.join(staging, 'release-notes.md')
+      await writeFile(
+        notesPath,
+        [
+          annotation,
+          '',
+          `平台：${platform}。下载下方的 ${family === 'windows' ? 'EXE' : 'DMG'} 安装包。`,
+          '安装包与官网下载版本一致；SHA256SUMS 提供 SHA-256 校验值。',
+          '',
+          `[对应源码](${REPOSITORY_URL}/tree/${bundle.tag}) · [官网更新日志](https://www.guanzhangai.cn/zh/changelog)`,
+          ''
+        ].join('\n'),
+        'utf8'
+      )
+
+      let release = await readRelease(bundle.tag)
+      if (!release) {
+        await gh([
+          'release',
+          'create',
+          ...releaseArgs(bundle.tag),
+          '--verify-tag',
+          '--draft',
+          '--latest=false',
+          '--title',
+          `馆长 ${version} · ${platform}`,
+          '--notes-file',
+          notesPath
+        ])
+        release = await readRelease(bundle.tag)
+      }
+      if (!release) throw new Error(`GitHub Release draft is missing: ${bundle.tag}`)
+      if (release.draft) {
+        const expectedNames = new Set(files.map((file) => file.name))
+        if (release.prerelease || release.assets.some((asset) => !expectedNames.has(asset.name))) {
+          throw new Error('GitHub draft contains unexpected assets or is marked prerelease')
+        }
+        for (const file of files) {
+          const existing = release.assets.find((asset) => asset.name === file.name)
+          if (existing?.state === 'starter') {
+            await gh(['release', 'delete-asset', ...releaseArgs(bundle.tag), file.name, '--yes'])
+          } else if (existing) {
+            continue
+          }
+          await gh(['release', 'upload', ...releaseArgs(bundle.tag), file.path])
+        }
+        release = await readRelease(bundle.tag)
+      }
+      await verifyAssets(release, files)
+      process.stdout.write(`[release] GitHub assets verified for ${bundle.tag}\n`)
+      return { bundle, files, releaseId: release.id }
+    },
+
+    async publish(prepared) {
+      assertLivePublishAllowed()
+      const { bundle, files, releaseId } = prepared
+      await verifySource(bundle)
+      let release = await readRelease(bundle.tag)
+      if (release?.id !== releaseId) throw new Error('GitHub Release changed during publication')
+      await verifyAssets(release, files)
+      if (release.draft) {
+        await gh(['release', 'edit', ...releaseArgs(bundle.tag), '--draft=false', '--latest=false'])
+        release = await readRelease(bundle.tag)
+      }
+      if (!release || release.draft) throw new Error('GitHub Release is not public')
+      await verifyAssets(release, files)
+      // Anonymous downloads verify that users can fetch the same bytes, independently of CLI auth.
+      for (const file of files) {
+        const asset = release.assets.find((entry) => entry.name === file.name)
+        const response = await fetchImpl(asset.browser_download_url, {
+          cache: 'no-store',
+          signal: AbortSignal.timeout(20 * 60_000)
+        })
+        if (!response.ok || !response.body) {
+          throw new Error(`GitHub public download failed: ${file.name} (HTTP ${response.status})`)
+        }
+        const hash = createHash('sha256')
+        let size = 0
+        for await (const chunk of response.body) {
+          size += chunk.length
+          hash.update(chunk)
+        }
+        if (size !== file.size || hash.digest('hex') !== file.sha256) {
+          throw new Error(`GitHub public download hash differs: ${file.name}`)
+        }
+      }
+      process.stdout.write(`[release] GitHub ${bundle.tag} is public: ${release.html_url}\n`)
+    },
+
+    async deleteDraft(tag) {
+      const release = await readRelease(tag)
+      if (!release) return
+      if (!release.draft) throw new Error(`GitHub ${tag} is published; refuse to abort`)
+      await gh(['release', 'delete', ...releaseArgs(tag), '--yes'])
+    }
+  }
+}
diff --git a/scripts/release/macos.mjs b/scripts/release/macos.mjs
index bc6e0c29..b8672fa1 100644
--- a/scripts/release/macos.mjs
+++ b/scripts/release/macos.mjs
@@ -23,6 +23,12 @@ import {
   validateReleaseArgs
 } from './regression.mjs'
 import { assertLivePublishAllowed, resolveReleaseStorageConfig } from './storage/config.mjs'
+import { createGitHubReleasePublisher } from './github.mjs'
+import {
+  isReleaseChannelCurrent,
+  verifyPublicReleaseFragment,
+  verifyReleaseStorageFragment
+} from './shared/live-tag.mjs'
 
 const execFileAsync = promisify(execFile)
 const ROOT = process.cwd()
@@ -320,18 +326,37 @@ if (mode === 'test') {
 const candidate = await assertCandidatePublishable({
   tag: releaseTag,
   platform: MACOS_PLATFORM,
-  commit: taggedCommit
+  commit: taggedCommit,
+  allowPublished: true
 })
-await run(process.execPath, [
-  path.join(ROOT, 'scripts', 'release', 'r2', 'upload-fragment.mjs'),
-  candidate.verified.directory,
-  candidate.verified.fragmentPath
-])
-await run(process.execPath, [
-  path.join(ROOT, 'scripts', 'release', 'r2', 'finalize-macos.mjs'),
-  '--tag',
-  releaseTag
-])
+const storage = resolveReleaseStorageConfig()
+const github = createGitHubReleasePublisher({ root: ROOT })
+const channelCurrent = await isReleaseChannelCurrent(
+  candidate.verified.fragment,
+  storage.publicBaseUrl
+)
+if (!channelCurrent && candidate.state.status === 'published') {
+  throw new Error(`published ${releaseTag} is missing from ${storage.label}; refuse to republish`)
+}
+const githubRelease = await github.prepare(candidate)
+if (!channelCurrent) {
+  await run(process.execPath, [
+    path.join(ROOT, 'scripts', 'release', 'r2', 'upload-fragment.mjs'),
+    candidate.verified.directory,
+    candidate.verified.fragmentPath
+  ])
+  await run(process.execPath, [
+    path.join(ROOT, 'scripts', 'release', 'r2', 'finalize-macos.mjs'),
+    '--tag',
+    releaseTag
+  ])
+}
+await verifyPublicReleaseFragment(candidate.verified.fragment, storage.publicBaseUrl)
+await verifyReleaseStorageFragment(candidate.verified.fragment, process.env.NCURATOR_AWS_CLI)
+if (!(await isReleaseChannelCurrent(candidate.verified.fragment, storage.publicBaseUrl))) {
+  throw new Error('public macOS release channel does not match the candidate')
+}
+await github.publish(githubRelease)
 await markCandidatePublished({ tag: releaseTag, platform: MACOS_PLATFORM })
 try {
   await cleanupLocalTestLogs(ROOT)
@@ -351,4 +376,4 @@ try {
   const message = error instanceof Error ? error.message : String(error)
   process.stderr.write(`[release] local candidate cleanup warning: ${message}\n`)
 }
-process.stdout.write(`[release] macOS ${releaseTag} published from retained candidates\n`)
+process.stdout.write(`[release] macOS ${releaseTag} published to ${storage.label} and GitHub\n`)
diff --git a/scripts/release/shared/live-tag.mjs b/scripts/release/shared/live-tag.mjs
index a071bc66..1b6316ab 100644
--- a/scripts/release/shared/live-tag.mjs
+++ b/scripts/release/shared/live-tag.mjs
@@ -1,16 +1,81 @@
+import { execFile } from 'node:child_process'
+import { promisify } from 'node:util'
 import {
   DOMESTIC_DOWNLOAD_BASE_URL,
-  GLOBAL_DOWNLOAD_BASE_URL
+  GLOBAL_DOWNLOAD_BASE_URL,
+  resolveReleaseStorageConfig
 } from '../storage/config.mjs'
 import { fetchWithRetry } from './http.mjs'
-import { parseReleaseTag } from '../tag.mjs'
+import { compareReleaseVersions, parseReleaseTag } from '../tag.mjs'
+import { artifactKey } from '../r2/storage-layout.mjs'
+import YAML from 'yaml'
+
+const execFileAsync = promisify(execFile)
 
 const LATEST_MANIFEST = {
   mac: 'releases/latest/macos.json',
   windows: 'releases/latest/windows.json'
 }
 
-export const RELEASE_PUBLIC_BASE_URLS = [DOMESTIC_DOWNLOAD_BASE_URL, GLOBAL_DOWNLOAD_BASE_URL]
+export const RELEASE_PUBLIC_BASE_URLS = [
+  DOMESTIC_DOWNLOAD_BASE_URL,
+  GLOBAL_DOWNLOAD_BASE_URL,
+  resolveReleaseStorageConfig
+]
+
+export const isReleaseChannelCurrent = async (fragment, base, fetchImpl = fetchWithRetry) => {
+  const { family, version } = parseReleaseTag(fragment.tag, fragment.platform)
+  const metadataPath =
+    family === 'mac' ? 'updates/latest/latest-mac.yml' : 'updates/latest/latest.yml'
+  const responses = await Promise.all(
+    [LATEST_MANIFEST[family], metadataPath].map((key) =>
+      fetchImpl(`${base}/${key}?check=${Date.now()}`, { cache: 'no-store' })
+    )
+  )
+  for (const response of responses) {
+    if (!response.ok && response.status !== 404) {
+      throw new Error(`public release channel lookup failed: HTTP ${response.status}`)
+    }
+  }
+  const manifest = responses[0].ok ? await responses[0].json() : undefined
+  const metadata = responses[1].ok ? YAML.parse(await responses[1].text()) : undefined
+  for (const current of [manifest, metadata]) {
+    if (!current) continue
+    if (!/^\d+\.\d+\.\d+$/u.test(current.version)) {
+      throw new Error('public release channel version is invalid')
+    }
+    if (compareReleaseVersions(current.version, version) > 0) {
+      throw new Error(
+        `public channel already contains newer ${current.version}; refuse to downgrade`
+      )
+    }
+  }
+  if (manifest?.version === version && manifest.tag !== fragment.tag) {
+    throw new Error(`public channel tag differs from ${fragment.tag}`)
+  }
+  const installer = fragment.files.find((file) => file.role === 'installer')
+  const download = manifest?.downloads?.[family === 'mac' ? 'arm64' : 'x64']
+  const expectedUpdates = fragment.files.filter((file) =>
+    family === 'mac' ? file.name.endsWith('.zip') : file.role === 'installer'
+  )
+  return (
+    manifest?.tag === fragment.tag &&
+    metadata?.version === version &&
+    download?.name === installer.name &&
+    download.size === installer.size &&
+    download.sha512 === installer.sha512 &&
+    download.url === `${base}/${artifactKey(fragment, installer.name)}` &&
+    expectedUpdates.every((file) =>
+      metadata.files?.some(
+        (entry) =>
+          decodeURI(new URL(entry.url, `${base}/${metadataPath}`).href) ===
+            `${base}/${artifactKey(fragment, file.name)}` &&
+          entry.sha512 === file.sha512 &&
+          entry.size === file.size
+      )
+    )
+  )
+}
 
 export const findLiveChannelsForTag = async (releaseTag, fetchImpl = fetchWithRetry) => {
   const { family } = parseReleaseTag(releaseTag)
@@ -28,3 +93,47 @@ export const findLiveChannelsForTag = async (releaseTag, fetchImpl = fetchWithRe
 
   return live
 }
+
+export const verifyPublicReleaseFragment = async (
+  fragment,
+  publicBaseUrl = DOMESTIC_DOWNLOAD_BASE_URL
+) => {
+  for (const file of fragment.files) {
+    const response = await fetchWithRetry(`${publicBaseUrl}/${artifactKey(fragment, file.name)}`, {
+      method: 'HEAD',
+      cache: 'no-store'
+    })
+    if (!response.ok || Number(response.headers.get('content-length')) !== file.size) {
+      throw new Error(`remote release asset verification failed: ${file.name}`)
+    }
+  }
+}
+
+export const verifyReleaseStorageFragment = async (fragment, awsExecutable) => {
+  const config = resolveReleaseStorageConfig()
+  if (!awsExecutable) throw new Error(`${config.label} verification configuration is incomplete`)
+  const { createAwsCliRuntime } = await import('../storage/client.mjs')
+  const runtime = await createAwsCliRuntime(config)
+  for (const file of fragment.files) {
+    const key = artifactKey(fragment, file.name)
+    const result = await execFileAsync(
+      awsExecutable,
+      [
+        's3api',
+        'head-object',
+        '--bucket',
+        config.bucket,
+        '--key',
+        key,
+        '--output',
+        'json',
+        ...runtime.extraArgs
+      ],
+      { env: runtime.env }
+    )
+    const remote = JSON.parse(result.stdout)
+    if (Number(remote.ContentLength) !== file.size || remote.Metadata?.sha512 !== file.sha512) {
+      throw new Error(`${config.label} release asset does not match fragment: ${key}`)
+    }
+  }
+}
diff --git a/scripts/release/shared/windows.mjs b/scripts/release/shared/windows.mjs
index dadb1f1e..b83889b2 100644
--- a/scripts/release/shared/windows.mjs
+++ b/scripts/release/shared/windows.mjs
@@ -5,14 +5,9 @@ import path from 'node:path'
 import process from 'node:process'
 import { promisify } from 'node:util'
 import { loadReleaseEnvironment } from './environment.mjs'
-import { assertReleaseFragment } from '../r2/fragment-contract.mjs'
-import { fetchWithRetry } from './http.mjs'
-import { artifactKey, fragmentKey } from '../r2/storage-layout.mjs'
-import { DOMESTIC_DOWNLOAD_BASE_URL, resolveReleaseStorageConfig } from '../storage/config.mjs'
+import { resolveReleaseStorageConfig } from '../storage/config.mjs'
 
 const execFileAsync = promisify(execFile)
-const WINDOWS_PLATFORM = 'windows-x64'
-const PUBLIC_RELEASE_BASE_URL = DOMESTIC_DOWNLOAD_BASE_URL
 
 const commandResult = async (command, args, options = {}) => {
   try {
@@ -131,6 +126,11 @@ export const inspectLocalWindowsRelease = async (root, { requirePublish = true }
 
   const awsExecutable = requirePublish ? await resolveAwsExecutable() : ''
   if (requirePublish && !awsExecutable) issues.push('AWS CLI is not available')
+  if (requirePublish && !(await commandResult('gh', ['--version'])).ok) {
+    issues.push(
+      'GitHub CLI is not available; install gh and run gh auth login --hostname github.com'
+    )
+  }
 
   for (const [command, label] of [
     ['git', 'Git'],
@@ -155,75 +155,3 @@ export const inspectLocalWindowsRelease = async (root, { requirePublish = true }
     python
   }
 }
-
-export const readPublicReleaseFragment = async (
-  releaseTag,
-  platform,
-  publicBaseUrl = PUBLIC_RELEASE_BASE_URL
-) => {
-  const response = await fetch(
-    `${publicBaseUrl}/${fragmentKey(releaseTag, platform)}?check=${Date.now()}`,
-    { cache: 'no-store' }
-  )
-  if (response.status === 404) return undefined
-  if (!response.ok) {
-    throw new Error(`release status lookup failed for ${platform}: HTTP ${response.status}`)
-  }
-  const fragment = await response.json()
-  assertReleaseFragment(fragment, {
-    tag: releaseTag,
-    platform,
-    label: `remote release fragment ${platform}`
-  })
-  return fragment
-}
-
-export const verifyPublicReleaseFragment = async (
-  fragment,
-  publicBaseUrl = PUBLIC_RELEASE_BASE_URL
-) => {
-  for (const file of fragment.files) {
-    const response = await fetchWithRetry(
-      `${publicBaseUrl}/${artifactKey(fragment, file.name)}`,
-      {
-        method: 'HEAD',
-        cache: 'no-store'
-      }
-    )
-    if (!response.ok || Number(response.headers.get('content-length')) !== file.size) {
-      throw new Error(`remote release asset verification failed: ${file.name}`)
-    }
-  }
-}
-
-export const verifyReleaseStorageFragment = async (fragment, awsExecutable) => {
-  const config = resolveReleaseStorageConfig()
-  if (!awsExecutable) throw new Error(`${config.label} verification configuration is incomplete`)
-  const { createAwsCliRuntime } = await import('../storage/client.mjs')
-  const runtime = await createAwsCliRuntime(config)
-  for (const file of fragment.files) {
-    const key = artifactKey(fragment, file.name)
-    const result = await commandResult(
-      awsExecutable,
-      [
-        's3api',
-        'head-object',
-        '--bucket',
-        config.bucket,
-        '--key',
-        key,
-        '--output',
-        'json',
-        ...runtime.extraArgs
-      ],
-      { env: runtime.env }
-    )
-    if (!result.ok) throw new Error(`${config.label} release asset lookup failed: ${key}`)
-    const remote = JSON.parse(result.stdout)
-    if (Number(remote.ContentLength) !== file.size || remote.Metadata?.sha512 !== file.sha512) {
-      throw new Error(`${config.label} release asset does not match fragment: ${key}`)
-    }
-  }
-}
-
-export { PUBLIC_RELEASE_BASE_URL, WINDOWS_PLATFORM }
diff --git a/scripts/release/windows.mjs b/scripts/release/windows.mjs
index 1b80127b..800fde87 100644
--- a/scripts/release/windows.mjs
+++ b/scripts/release/windows.mjs
@@ -12,12 +12,7 @@ import {
   readReleaseCandidate,
   recordCandidateE2E
 } from './candidate.mjs'
-import {
-  inspectLocalWindowsRelease,
-  readPublicReleaseFragment,
-  verifyPublicReleaseFragment,
-  verifyReleaseStorageFragment
-} from './shared/windows.mjs'
+import { inspectLocalWindowsRelease } from './shared/windows.mjs'
 import { assertLivePublishAllowed, resolveReleaseStorageConfig } from './storage/config.mjs'
 import { prepareReleaseWorkspace } from './workspace.mjs'
 import { parseReleaseTag } from './tag.mjs'
@@ -29,6 +24,12 @@ import {
 import { cleanupLocalTestLogs } from './shared/test-logs.mjs'
 import { createReleaseStageDeadline } from './shared/stage-deadline.mjs'
 import { loadReleaseEnvironment } from './shared/environment.mjs'
+import { createGitHubReleasePublisher } from './github.mjs'
+import {
+  isReleaseChannelCurrent,
+  verifyPublicReleaseFragment,
+  verifyReleaseStorageFragment
+} from './shared/live-tag.mjs'
 import { cpSync, existsSync } from 'node:fs'
 
 const execFileAsync = promisify(execFile)
@@ -307,37 +308,41 @@ if (mode === 'test') {
 
 const storage = resolveReleaseStorageConfig()
 const publicBaseUrl = storage.publicBaseUrl
-const existing = await readPublicReleaseFragment(releaseTag, 'windows-x64', publicBaseUrl)
-if (existing) {
-  await verifyPublicReleaseFragment(existing, publicBaseUrl)
-  await verifyReleaseStorageFragment(existing, inspection.awsExecutable)
-  await cleanupLocalTestLogsSafely()
-  await cleanupLocalCandidates()
-  process.stdout.write(`[release] Windows ${releaseTag} is already complete on ${storage.label}\n`)
-  process.exit(0)
-}
 const candidate = await assertCandidatePublishable({
   tag: releaseTag,
   platform: 'windows-x64',
-  commit: taggedCommit
+  commit: taggedCommit,
+  allowPublished: true
 })
-await run(
-  process.execPath,
-  [
-    path.join(ROOT, 'scripts', 'release', 'r2', 'upload-fragment.mjs'),
-    candidate.verified.directory,
-    candidate.verified.fragmentPath
-  ],
-  { cwd: ROOT, env: process.env }
-)
-await run(
-  process.execPath,
-  [path.join(ROOT, 'scripts', 'release', 'r2', 'finalize-windows.mjs'), '--tag', releaseTag],
-  { cwd: ROOT, env: process.env }
-)
+const github = createGitHubReleasePublisher({ root: ROOT })
+const channelCurrent = await isReleaseChannelCurrent(candidate.verified.fragment, publicBaseUrl)
+if (!channelCurrent && candidate.state.status === 'published') {
+  throw new Error(`published ${releaseTag} is missing from ${storage.label}; refuse to republish`)
+}
+const githubRelease = await github.prepare(candidate)
+if (!channelCurrent) {
+  await run(
+    process.execPath,
+    [
+      path.join(ROOT, 'scripts', 'release', 'r2', 'upload-fragment.mjs'),
+      candidate.verified.directory,
+      candidate.verified.fragmentPath
+    ],
+    { cwd: ROOT, env: process.env }
+  )
+  await run(
+    process.execPath,
+    [path.join(ROOT, 'scripts', 'release', 'r2', 'finalize-windows.mjs'), '--tag', releaseTag],
+    { cwd: ROOT, env: process.env }
+  )
+}
 await verifyPublicReleaseFragment(candidate.verified.fragment, publicBaseUrl)
 await verifyReleaseStorageFragment(candidate.verified.fragment, inspection.awsExecutable)
+if (!(await isReleaseChannelCurrent(candidate.verified.fragment, publicBaseUrl))) {
+  throw new Error('public Windows release channel does not match the candidate')
+}
+await github.publish(githubRelease)
 await markCandidatePublished({ tag: releaseTag, platform: 'windows-x64' })
 await cleanupLocalTestLogsSafely()
 await cleanupLocalCandidates()
-process.stdout.write(`[release] Windows ${releaseTag} published from ${candidate.bundlePath}\n`)
+process.stdout.write(`[release] Windows ${releaseTag} published to ${storage.label} and GitHub\n`)
diff --git a/tests/case/unit/release/app-update-publish-config.test.ts b/tests/case/unit/release/app-update-publish-config.test.ts
index 086c7eb2..3486e3ec 100644
--- a/tests/case/unit/release/app-update-publish-config.test.ts
+++ b/tests/case/unit/release/app-update-publish-config.test.ts
@@ -140,7 +140,6 @@ describe('app update publish config', () => {
       macFinalize,
       tagContract,
       storageConfig,
-      windowsShared,
       uploadFragment
     ] = await Promise.all([
       readFile(path.resolve('scripts/release/windows.mjs'), 'utf8'),
@@ -149,7 +148,6 @@ describe('app update publish config', () => {
       readFile(path.resolve('scripts/release/r2/finalize-macos.mjs'), 'utf8'),
       readFile(path.resolve('scripts/release/tag.mjs'), 'utf8'),
       readFile(path.resolve('scripts/release/storage/config.mjs'), 'utf8'),
-      readFile(path.resolve('scripts/release/shared/windows.mjs'), 'utf8'),
       readFile(path.resolve('scripts/release/r2/upload-fragment.mjs'), 'utf8')
     ])
 
@@ -177,9 +175,6 @@ describe('app update publish config', () => {
     expect(macFinalize).not.toContain('release-status/macos/')
     expect(uploadFragment).toContain('fragmentKey')
     expect(uploadFragment).toContain("'no-store'")
-    expect(windowsShared).toContain('fragmentKey')
-    expect(windowsShared).toContain('artifactKey(fragment, file.name)')
-    expect(windowsShared).not.toContain('file.storageName')
     expect(tagContract).toContain('/^(mac|windows)-v')
     expect(windowsRelease).toContain('assertLivePublishAllowed')
     expect(macRelease).toContain('assertLivePublishAllowed')
diff --git a/tests/case/unit/release/artifact-bundle.test.ts b/tests/case/unit/release/artifact-bundle.test.ts
index 5651d4ee..64779075 100644
--- a/tests/case/unit/release/artifact-bundle.test.ts
+++ b/tests/case/unit/release/artifact-bundle.test.ts
@@ -1,7 +1,9 @@
 import fs from 'node:fs/promises'
 import os from 'node:os'
 import path from 'node:path'
-import { afterEach, describe, expect, it } from 'vitest'
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+import { createHash } from 'node:crypto'
+import { createGitHubReleasePublisher } from '../../../../scripts/release/github.mjs'
 import {
   createReleaseBundle,
   verifyReleaseBundle
@@ -98,3 +100,196 @@ describe('release artifact bundle', () => {
     await expect(verifyReleaseBundle(bundlePath)).rejects.toThrow('release asset size changed')
   })
 })
+
+type GitHubAsset = {
+  name: string
+  state: string
+  size: number
+  digest: string
+  browser_download_url: string
+}
+type GitHubRelease = {
+  id: number
+  tag_name: string
+  draft: boolean
+  prerelease: boolean
+  assets: GitHubAsset[]
+  html_url: string
+}
+
+const githubHarness = () => {
+  const state = {
+    commit: '0123456789012345678901234567890123456789',
+    release: undefined as GitHubRelease | undefined,
+    failUpload: '',
+    failPublication: false,
+    writes: [] as string[],
+    bytes: new Map<string, Buffer>()
+  }
+  const execute = async (command: string, args: string[]) => {
+    expect(command).toBe('gh')
+    if (args[0] === 'release' && args[1] === 'view') {
+      if (!state.release)
+        throw Object.assign(new Error('not found'), { stderr: 'release not found' })
+      return { stdout: JSON.stringify({ databaseId: state.release.id }) }
+    }
+    if (args[0] === 'api') {
+      const endpoint = args.at(-1)
+      if (endpoint === 'repos/Yoan98/Ncurator') {
+        return { stdout: JSON.stringify({ private: false, permissions: { push: true } }) }
+      }
+      if (endpoint?.includes('/git/ref/')) {
+        return { stdout: JSON.stringify({ object: { type: 'tag', sha: 'annotated-tag' } }) }
+      }
+      if (endpoint?.includes('/git/tags/')) {
+        return {
+          stdout: JSON.stringify({
+            object: { type: 'commit', sha: state.commit },
+            message: '修复文件读取'
+          })
+        }
+      }
+      if (!state.release) throw Object.assign(new Error('not found'), { stderr: '(HTTP 404)' })
+      return { stdout: JSON.stringify(state.release) }
+    }
+    state.writes.push(args[1])
+    if (args[1] === 'create') {
+      expect(args).toContain('--verify-tag')
+      expect(args).toContain('--draft')
+      state.release = {
+        id: 7,
+        tag_name: args[2],
+        draft: true,
+        prerelease: false,
+        assets: [],
+        html_url: `https://github.com/Yoan98/Ncurator/releases/tag/${args[2]}`
+      }
+    } else if (args[1] === 'upload') {
+      expect(args).not.toContain('--clobber')
+      const filePath = args.at(-1)!
+      const name = path.basename(filePath)
+      if (state.failUpload === name) throw new Error('upload interrupted')
+      const content = await fs.readFile(filePath)
+      const url = `https://github.com/Yoan98/Ncurator/releases/download/${args[2]}/${encodeURIComponent(name)}`
+      state.bytes.set(url, content)
+      state.release!.assets.push({
+        name,
+        size: content.length,
+        state: 'uploaded',
+        digest: `sha256:${createHash('sha256').update(content).digest('hex')}`,
+        browser_download_url: url
+      })
+    } else if (args[1] === 'edit') {
+      if (state.failPublication) throw new Error('publication interrupted')
+      state.release!.draft = false
+    } else if (args[1] === 'delete') {
+      state.release = undefined
+    } else {
+      throw new Error(`unexpected command: ${args.join(' ')}`)
+    }
+    return { stdout: '' }
+  }
+  const publisher = createGitHubReleasePublisher({
+    execute,
+    fetchImpl: async (url: string) => {
+      const content = state.bytes.get(url)
+      return new Response(content ? new Uint8Array(content) : null, { status: content ? 200 : 404 })
+    }
+  })
+  return { state, publisher }
+}
+
+const githubCandidate = async () => {
+  const directory = await createFixture()
+  const bundlePath = path.join(directory, 'release-bundle-windows-x64.json')
+  await createReleaseBundle({
+    fragmentPath: path.join(directory, 'windows-x64.json'),
+    outputPath: bundlePath,
+    commit: '0123456789012345678901234567890123456789'
+  })
+  return { directory, state: { status: 'ready' }, verified: await verifyReleaseBundle(bundlePath) }
+}
+
+describe('GitHub release publication', () => {
+  const previousConfirmation = process.env.NCURATOR_ALLOW_LIVE_PUBLISH
+  beforeEach(() => {
+    process.env.NCURATOR_ALLOW_LIVE_PUBLISH = 'publish-to-production'
+  })
+  afterEach(() => {
+    if (previousConfirmation === undefined) delete process.env.NCURATOR_ALLOW_LIVE_PUBLISH
+    else process.env.NCURATOR_ALLOW_LIVE_PUBLISH = previousConfirmation
+  })
+
+  it('uploads only the tested installer and checksum, then publishes verified public bytes', async () => {
+    const { state, publisher } = githubHarness()
+    const prepared = await publisher.prepare(await githubCandidate())
+    expect(state.release?.draft).toBe(true)
+    expect(state.release?.assets.map((asset) => asset.name)).toEqual([
+      '馆长-0.1.21-Windows-x64.exe',
+      'SHA256SUMS'
+    ])
+    await publisher.publish(prepared)
+    expect(state.release?.draft).toBe(false)
+    const writes = [...state.writes]
+    await publisher.publish(await publisher.prepare(await githubCandidate()))
+    expect(state.writes).toEqual(writes)
+  })
+
+  it('stops before any write if source identity or the live gate is invalid', async () => {
+    const { state, publisher } = githubHarness()
+    state.commit = 'f'.repeat(40)
+    await expect(publisher.prepare(await githubCandidate())).rejects.toThrow('does not match')
+    expect(state.writes).toEqual([])
+    delete process.env.NCURATOR_ALLOW_LIVE_PUBLISH
+    await expect(publisher.prepare(await githubCandidate())).rejects.toThrow(
+      'live publish is locked'
+    )
+    expect(state.writes).toEqual([])
+  })
+
+  it('resumes an interrupted upload without overwriting the existing installer', async () => {
+    const { state, publisher } = githubHarness()
+    const candidate = await githubCandidate()
+    state.failUpload = 'SHA256SUMS'
+    await expect(publisher.prepare(candidate)).rejects.toThrow('upload interrupted')
+    expect(state.release?.assets).toHaveLength(1)
+    state.failUpload = ''
+    await publisher.publish(await publisher.prepare(candidate))
+    expect(state.release?.assets).toHaveLength(2)
+    expect(state.writes.filter((write) => write === 'create')).toHaveLength(1)
+  })
+
+  it('resumes publication after the website stage without creating a second release', async () => {
+    const { state, publisher } = githubHarness()
+    const candidate = await githubCandidate()
+    const prepared = await publisher.prepare(candidate)
+    state.failPublication = true
+    await expect(publisher.publish(prepared)).rejects.toThrow('publication interrupted')
+    state.failPublication = false
+    await publisher.publish(await publisher.prepare(candidate))
+    expect(state.release?.draft).toBe(false)
+    expect(state.writes.filter((write) => write === 'upload')).toHaveLength(2)
+  })
+
+  it('refuses mismatched existing assets and detects corrupt public downloads', async () => {
+    const { state, publisher } = githubHarness()
+    const candidate = await githubCandidate()
+    const prepared = await publisher.prepare(candidate)
+    state.release!.assets[0].digest = `sha256:${'f'.repeat(64)}`
+    await expect(publisher.prepare(candidate)).rejects.toThrow('asset hash differs')
+    state.release!.assets[0].digest = `sha256:${candidate.verified.bundle.files[0].sha256}`
+    state.bytes.set(state.release!.assets[0].browser_download_url, Buffer.from('corrupted'))
+    await expect(publisher.publish(prepared)).rejects.toThrow('public download hash differs')
+  })
+
+  it('deletes unpublished drafts on abort and protects published releases', async () => {
+    const { publisher } = githubHarness()
+    const candidate = await githubCandidate()
+    await publisher.prepare(candidate)
+    await publisher.deleteDraft(candidate.verified.bundle.tag)
+    await publisher.publish(await publisher.prepare(candidate))
+    await expect(publisher.deleteDraft(candidate.verified.bundle.tag)).rejects.toThrow(
+      'refuse to abort'
+    )
+  })
+})
diff --git a/tests/case/unit/release/candidate.test.ts b/tests/case/unit/release/candidate.test.ts
index d44b4bc6..2576a7ce 100644
--- a/tests/case/unit/release/candidate.test.ts
+++ b/tests/case/unit/release/candidate.test.ts
@@ -8,6 +8,7 @@ import {
   assertCandidatePublishable,
   cleanupSupersededReleaseCandidates,
   materializeReleaseCandidate,
+  markCandidatePublished,
   readReleaseCandidate,
   recordCandidateE2E,
   resolveCandidateDirectory
@@ -135,6 +136,21 @@ describe('retained release candidate', () => {
     expect(rejected.bundlePath).toBe(prepared.bundlePath)
   })
 
+  it('permits verified published candidates only for an explicit publish retry', async () => {
+    await materializeReleaseCandidate({ bundlePath: await createBundle() })
+    await recordCandidateE2E({ tag: 'windows-v0.1.21', platform: 'windows-x64', status: 'passed' })
+    await markCandidatePublished({ tag: 'windows-v0.1.21', platform: 'windows-x64' })
+    const request = {
+      tag: 'windows-v0.1.21',
+      platform: 'windows-x64',
+      commit: '0123456789012345678901234567890123456789'
+    }
+    await expect(assertCandidatePublishable(request)).rejects.toThrow('is published')
+    await expect(
+      assertCandidatePublishable({ ...request, allowPublished: true })
+    ).resolves.toBeDefined()
+  })
+
   it('allows an explicitly justified E2E skip to become publishable', async () => {
     const bundlePath = await createBundle()
     await materializeReleaseCandidate({ bundlePath })
diff --git a/tests/case/unit/release/live-tag.test.ts b/tests/case/unit/release/live-tag.test.ts
index c8e370ab..bcc9acd5 100644
--- a/tests/case/unit/release/live-tag.test.ts
+++ b/tests/case/unit/release/live-tag.test.ts
@@ -1,5 +1,8 @@
 import { describe, expect, it } from 'vitest'
-import { findLiveChannelsForTag } from '../../../../scripts/release/shared/live-tag.mjs'
+import {
+  findLiveChannelsForTag,
+  isReleaseChannelCurrent
+} from '../../../../scripts/release/shared/live-tag.mjs'
 
 describe('release live tag detection', () => {
   it('reports channels whose latest manifest points at the tag', async () => {
@@ -27,4 +30,72 @@ describe('release live tag detection', () => {
     })
     await expect(findLiveChannelsForTag('mac-v1.0.0', fetchImpl)).resolves.toEqual([])
   })
+
+  it.each(['windows', 'mac'] as const)(
+    'verifies the %s manifest and relative update URL against the candidate',
+    async (family) => {
+      const base = 'https://download.guanzhangai.cn'
+      const tag = `${family}-v1.0.0`
+      const folder = family === 'windows' ? 'windows' : 'macos'
+      const installerName =
+        family === 'windows' ? '馆长-1.0.0-Windows-x64.exe' : '馆长-1.0.0-macos-arm64.dmg'
+      const installer = {
+        role: 'installer',
+        name: installerName,
+        size: 123,
+        sha512: 'installer-hash'
+      }
+      const update =
+        family === 'windows'
+          ? installer
+          : { role: 'update', name: 'Ncurator-mac-arm64.zip', size: 456, sha512: 'zip-hash' }
+      const fragment = {
+        tag,
+        platform: family === 'windows' ? 'windows-x64' : 'macos-arm64',
+        files: [installer, ...(family === 'mac' ? [update] : [])]
+      }
+      const manifest = {
+        version: '1.0.0',
+        tag,
+        downloads: {
+          [family === 'windows' ? 'x64' : 'arm64']: {
+            ...installer,
+            url: `${base}/artifacts/${folder}/${tag}/${installerName}`
+          }
+        }
+      }
+      let metadata = `version: 1.0.0\nfiles:\n  - url: ../../artifacts/${folder}/${tag}/${update.name}\n    size: ${update.size}\n    sha512: ${update.sha512}\n`
+      const fetchImpl = async (url: string) =>
+        new Response(url.includes('.json') ? JSON.stringify(manifest) : metadata)
+      await expect(isReleaseChannelCurrent(fragment, base, fetchImpl)).resolves.toBe(true)
+      metadata = metadata.replace(`/${tag}/`, '/old-tag/')
+      await expect(isReleaseChannelCurrent(fragment, base, fetchImpl)).resolves.toBe(false)
+      metadata = metadata.replace('version: 1.0.0', 'version: 1.0.1')
+      await expect(isReleaseChannelCurrent(fragment, base, fetchImpl)).rejects.toThrow(
+        'refuse to downgrade'
+      )
+    }
+  )
+
+  it('distinguishes an absent channel from a failed lookup', async () => {
+    const fragment = {
+      tag: 'windows-v1.0.0',
+      platform: 'windows-x64',
+      files: [{ role: 'installer', name: 'installer.exe', size: 123, sha512: 'hash' }]
+    }
+    await expect(
+      isReleaseChannelCurrent(
+        fragment,
+        'https://example.com',
+        async () => new Response(null, { status: 404 })
+      )
+    ).resolves.toBe(false)
+    await expect(
+      isReleaseChannelCurrent(
+        fragment,
+        'https://example.com',
+        async () => new Response(null, { status: 503 })
+      )
+    ).rejects.toThrow('HTTP 503')
+  })
 })