diff --git a/.gitea/workflows/windows-rc.yml b/.gitea/workflows/windows-rc.yml
new file mode 100644
index 0000000..c5d808c
--- /dev/null
+++ b/.gitea/workflows/windows-rc.yml
@@ -0,0 +1,113 @@
+name: Windows RC
+
+on:
+  workflow_dispatch:
+
+jobs:
+  signed-rc:
+    runs-on: windows-latest
+    permissions:
+      contents: read
+    env:
+      CARGO_TERM_COLOR: always
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "22"
+          cache: pnpm
+          cache-dependency-path: frontend/pnpm-lock.yaml
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: x86_64-pc-windows-msvc
+          components: rustfmt, clippy
+
+      - name: 准备锁定依赖
+        shell: pwsh
+        run: |
+          python -m pip install uv==0.9.24
+          uv sync --frozen --group packaging --directory backend
+          corepack enable
+          corepack prepare pnpm@10.28.0 --activate
+          pnpm --dir frontend install --frozen-lockfile
+
+      - name: 导入受控签名材料
+        shell: pwsh
+        env:
+          WINDOWS_CERTIFICATE_BASE64: ${{ secrets.WINDOWS_CERTIFICATE_BASE64 }}
+          WINDOWS_CERTIFICATE_PASSWORD: ${{ secrets.WINDOWS_CERTIFICATE_PASSWORD }}
+          CORE_SIGNING_KEY_PEM_BASE64: ${{ secrets.CORE_SIGNING_KEY_PEM_BASE64 }}
+        run: |
+          if (-not $env:WINDOWS_CERTIFICATE_BASE64 -or -not $env:WINDOWS_CERTIFICATE_PASSWORD -or -not $env:CORE_SIGNING_KEY_PEM_BASE64) {
+            throw '缺少 Windows RC 签名秘密'
+          }
+          $secretRoot = Join-Path $env:RUNNER_TEMP 'opennexus-signing'
+          New-Item -ItemType Directory -Force -Path $secretRoot | Out-Null
+          $pfx = Join-Path $secretRoot 'codesign.pfx'
+          $coreKey = Join-Path $secretRoot 'core-ed25519.pem'
+          [IO.File]::WriteAllBytes($pfx, [Convert]::FromBase64String($env:WINDOWS_CERTIFICATE_BASE64))
+          [IO.File]::WriteAllBytes($coreKey, [Convert]::FromBase64String($env:CORE_SIGNING_KEY_PEM_BASE64))
+          $password = ConvertTo-SecureString $env:WINDOWS_CERTIFICATE_PASSWORD -AsPlainText -Force
+          $certificate = Import-PfxCertificate -FilePath $pfx -CertStoreLocation Cert:\CurrentUser\My -Password $password
+          if (-not $certificate.HasPrivateKey) { throw '代码签名证书没有私钥' }
+          "OPENNEXUS_CORE_SIGNING_KEY_FILE=$coreKey" | Out-File $env:GITHUB_ENV -Append -Encoding utf8
+          "OPENNEXUS_WINDOWS_CERTIFICATE_THUMBPRINT=$($certificate.Thumbprint)" | Out-File $env:GITHUB_ENV -Append -Encoding utf8
+          Remove-Item -LiteralPath $pfx -Force
+
+      - name: 构建签名 Core
+        shell: pwsh
+        run: uv run --directory backend --group packaging python ../scripts/build-core.py --release
+
+      - name: 生成签名打包配置
+        shell: pwsh
+        run: |
+          $config = @{
+            bundle = @{
+              active = $true
+              targets = @('nsis')
+              resources = @{
+                '../../.build/sidecar/dist/opennexus-core/' = 'core/'
+              }
+              windows = @{
+                certificateThumbprint = $env:OPENNEXUS_WINDOWS_CERTIFICATE_THUMBPRINT
+                digestAlgorithm = 'sha256'
+                timestampUrl = 'http://timestamp.digicert.com'
+              }
+            }
+          } | ConvertTo-Json -Depth 5
+          $path = Join-Path $env:GITHUB_WORKSPACE 'frontend\src-tauri\tauri.rc.conf.json'
+          [IO.File]::WriteAllText($path, $config, [Text.UTF8Encoding]::new($false))
+          "OPENNEXUS_RC_CONFIG=$path" | Out-File $env:GITHUB_ENV -Append -Encoding utf8
+
+      - name: 构建 MSVC NSIS 安装包
+        shell: pwsh
+        run: pnpm --dir frontend exec tauri build --target x86_64-pc-windows-msvc --features desktop --config src-tauri/tauri.rc.conf.json
+
+      - name: 验证 RC 签名与大小
+        shell: pwsh
+        run: ./scripts/verify-windows-rc.ps1
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: OpenNexus-windows-x64-rc
+          if-no-files-found: error
+          retention-days: 14
+          path: |
+            frontend/src-tauri/target/x86_64-pc-windows-msvc/release/bundle/nsis/*.exe
+            .build/sidecar/manifest.json
+            .build/sidecar/manifest.sig
+            .build/sidecar/public-key.hex
+            .build/windows-rc-sha256.json
+
+      - name: 清理签名材料
+        if: always()
+        shell: pwsh
+        run: |
+          if ($env:OPENNEXUS_WINDOWS_CERTIFICATE_THUMBPRINT) {
+            Remove-Item -LiteralPath "Cert:\CurrentUser\My\$env:OPENNEXUS_WINDOWS_CERTIFICATE_THUMBPRINT" -Force -ErrorAction SilentlyContinue
+          }
+          Remove-Item -LiteralPath (Join-Path $env:RUNNER_TEMP 'opennexus-signing') -Recurse -Force -ErrorAction SilentlyContinue
+          Remove-Item -LiteralPath (Join-Path $env:GITHUB_WORKSPACE 'frontend\src-tauri\tauri.rc.conf.json') -Force -ErrorAction SilentlyContinue
diff --git a/docs/development/OpenNexus生产化实施进度-2026-09-08.md b/docs/development/OpenNexus生产化实施进度-2026-09-08.md
index a677ee9..af2d7ca 100644
--- a/docs/development/OpenNexus生产化实施进度-2026-09-08.md
+++ b/docs/development/OpenNexus生产化实施进度-2026-09-08.md
@@ -1031,3 +1031,6 @@ Core 的独立数据目录目前不等于已授权 Vault。Python 旧笔记写
 - 构建成功后默认删除可重建的 PyInstaller `work` 目录；只有显式 `--keep-work` 才保留。当前构建得到 1523 个文件、223.56 MiB，低于 300 MiB 基础包门槛。
 - 打包 Core 连续 20 次真实启动通过，每轮使用独立数据目录、不同会话代际、认证健康请求，并通过 Rust Workspace 写入及重读本地笔记；ready P95 为 2.676 秒，低于 10 秒。复制出的 Core 可执行文件修改一个字节后连续 20 次均在创建进程前返回 `CORE_INTEGRITY_FAILED`。
 - 临时 Ed25519 PEM 夹具验证了发布签名输出格式；本机没有代码签名证书，Rust 工具链为 GNU 而非 MSVC，也不是干净标准用户离线 VM。因此这些结果是 A-01 本机预检，A-01 仍不计为通过。
+- 新增手动触发的 Gitea Actions `Windows RC` 作业。作业固定 `x86_64-pc-windows-msvc`，从仓库 Secrets 解码并导入 PFX 与 Core Ed25519 PEM，生成单一动态 Tauri 配置并构建 NSIS；缺任一签名材料立即失败。
+- `verify-windows-rc.ps1` 要求恰好一个 NSIS 安装包、包体不超过 300 MiB、Host 与安装器 Authenticode 均为 `Valid` 且使用本次受控证书，同时检查 Core 签名/公钥格式并输出逐文件 SHA-256 清单。工作流只在全部门禁通过后上传 14 天保留的 RC，最后无条件移除证书、密钥目录和动态配置。
+- 本机已解析工作流 YAML 和 PowerShell 脚本语法；由于没有 Windows Runner Secrets、MSVC/SDK 和证书，不能在当前会话声称该发布作业已成功产出签名 RC。
diff --git a/scripts/verify-windows-rc.ps1 b/scripts/verify-windows-rc.ps1
new file mode 100644
index 0000000..7e4a10f
--- /dev/null
+++ b/scripts/verify-windows-rc.ps1
@@ -0,0 +1,42 @@
+$ErrorActionPreference = 'Stop'
+$root = (Resolve-Path (Join-Path $PSScriptRoot '..')).Path
+$bundle = Join-Path $root 'frontend\src-tauri\target\x86_64-pc-windows-msvc\release\bundle\nsis'
+$installers = @(Get-ChildItem -LiteralPath $bundle -Filter '*.exe' -File)
+if ($installers.Count -ne 1) { throw "应恰好生成一个 NSIS 安装包，实际为 $($installers.Count)" }
+$installer = $installers[0]
+if ($installer.Length -gt 300MB) { throw "基础安装包超过 300 MiB：$($installer.Length)" }
+
+$hostExecutable = Join-Path $root 'frontend\src-tauri\target\x86_64-pc-windows-msvc\release\notesagent-desktop.exe'
+if (-not (Test-Path -LiteralPath $hostExecutable -PathType Leaf)) { throw '缺少 MSVC Host 可执行文件' }
+foreach ($path in @($hostExecutable, $installer.FullName)) {
+  $signature = Get-AuthenticodeSignature -LiteralPath $path
+  if ($signature.Status -ne 'Valid') { throw "Authenticode 签名无效：$path ($($signature.Status))" }
+  if ($signature.SignerCertificate.Thumbprint -ne $env:OPENNEXUS_WINDOWS_CERTIFICATE_THUMBPRINT) {
+    throw "签名证书与受控证书不匹配：$path"
+  }
+}
+
+$manifest = Join-Path $root '.build\sidecar\manifest.json'
+$manifestSignature = Join-Path $root '.build\sidecar\manifest.sig'
+$publicKey = Join-Path $root '.build\sidecar\public-key.hex'
+foreach ($path in @($manifest, $manifestSignature, $publicKey)) {
+  if (-not (Test-Path -LiteralPath $path -PathType Leaf)) { throw "缺少 Core 发布文件：$path" }
+}
+if ((Get-Item -LiteralPath $manifestSignature).Length -ne 64) { throw 'Core 清单签名长度必须为 64 字节' }
+if ((Get-Content -LiteralPath $publicKey -Raw).Trim() -notmatch '^[0-9a-f]{64}$') { throw 'Core 发布公钥格式无效' }
+
+$result = [ordered]@{
+  schema = 1
+  product = 'OpenNexus'
+  target = 'x86_64-pc-windows-msvc'
+  installer_bytes = $installer.Length
+  certificate_thumbprint = $env:OPENNEXUS_WINDOWS_CERTIFICATE_THUMBPRINT
+  files = [ordered]@{}
+}
+foreach ($path in @($installer.FullName, $hostExecutable, $manifest, $manifestSignature, $publicKey)) {
+  $relative = [IO.Path]::GetRelativePath($root, $path).Replace('\', '/')
+  $result.files[$relative] = (Get-FileHash -LiteralPath $path -Algorithm SHA256).Hash.ToLowerInvariant()
+}
+$output = Join-Path $root '.build\windows-rc-sha256.json'
+[IO.File]::WriteAllText($output, ($result | ConvertTo-Json -Depth 5), [Text.UTF8Encoding]::new($false))
+Write-Host "Windows RC 校验通过：$($installer.Name)，$([math]::Round($installer.Length / 1MB, 2)) MiB"