diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ffa743e..796e1162 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,8 @@
 
 ### 新增
 
-- Organization Phase 4（独立站导出起步）：`freeos org export-standalone --out <dir>` 从 `dashboard/src/org-ui` 生成可运行的 Vite 包（OpenApp 风格路由、本地 JWT IdentityBridge `openxyos.standalone.jwt`、登录页、Docker / docker-compose、`server/proxy.mjs` 把 `/api` 反代到 FreeOS `FREEOS_UPSTREAM`）。Chat 不导出。默认安装器与 sidecar 不变（Phase 5）。说明见 `docs/org-export.md`。
+- Organization Phase 5（默认安装器瘦身）：Windows/macOS/Linux 默认包装与 Docker Compose 保持 **单进程 FreeOS + 宿主内 Organization**，不捆绑、不解压、不自动拉起 openXYOS Node。`FREEOS_ORG_SIDECAR=1` 与 `SHIP_OPENXYOS_RUNTIME=1` 仍是可选高级路径。文档对齐 #55 / ADR 001 / ADR 003 / `docs/org-export.md`。`modules/openxyos` 保留给导出与开发，不是默认运行时。
+- Organization Phase 4（独立站导出起步）：`freeos org export-standalone --out <dir>` 从 `dashboard/src/org-ui` 生成可运行的 Vite 包（OpenApp 风格路由、本地 JWT IdentityBridge `openxyos.standalone.jwt`、登录页、Docker / docker-compose、`server/proxy.mjs` 把 `/api` 反代到 FreeOS `FREEOS_UPSTREAM`）。Chat 不导出。默认安装器零 Node（Phase 5）。说明见 `docs/org-export.md`。
 - Organization Phase 3（工作台总览切片，Open-12 收口）：宿主内薄 Workspace / OpenDashboard。Dashboard `/organization/workspace` 使用共享 `dashboard/src/org-ui` 的 `WorkspacePage`。数据复用已有 `GET /api/org-module/overview`，链到已迁的公告 / 架构 / 员工 / 技能 / 智能体 / 任务 / 知识 / 反思 / 治理 / 设置。**不是**第二套控制面（assemble / pack / loop 仍在 `/organization`）。**Chat 永久不迁。** `freeos org export-standalone` 同时列出 Workspace。Phase 3 Open-12 宿主 UI 完成，下一步 Phase 4 导出。
 - Organization Phase 3（智能体切片）：宿主内 Agent Studio / 智能体定制。Dashboard `/organization/agents` 使用共享 `dashboard/src/org-ui` 的 `AgentsPage`。列表走 `GET /api/org-module/agents`；编译 / 生命周期 / 注册复用已有 `POST /api/org-module/blueprints/compile`、`/employees/transition`、`/employees/spawn`（`{FREEOS_HOME}/tenants/<id>/employees/`）。**不是** FreeOS 个性化智能体编辑器，也不是 Chat，也不依赖未挂载的 sidecar `/api/agent-studio/*`。注册后的同事出现在 Experts。`freeos org export-standalone` 同时列出 Agents。未迁：Chat、资料上传、人才市场。
 - Organization Phase 3（设置切片）：宿主内 Organization Settings。Dashboard `/organization/settings` 使用共享 `dashboard/src/org-ui` 的 `SettingsPage`。本页只编辑 `org_os` 目录模块开关（复用 `GET/PUT /api/org-module/modules`）与组织本地偏好（`GET /api/org-module/settings` · `PUT /api/org-module/prefs`，`{FREEOS_HOME}/org-os/prefs.json`）。**不是** FreeOS 系统设置：大模型密钥、用户、时区仍链到 `/system-settings`。没有边车，也不复制 sidecar 的 AI/用户/数据库页。`freeos org export-standalone` 同时列出 Settings。未迁：Chat、边车系统设置。
@@ -22,6 +23,7 @@
 
 ### 修复
 
+> 下面若干「启动即拉起本机 openXYOS」条目记录的是 0.0.1 边车时代问题。默认路径已被 [0.0.2] 与本文件 Unreleased 的 Phase 5 取代：安装与首屏不再捆绑或自动拉起 Node。
 
 - Windows 安装预配不再把 Node 工作目录选到残留的嵌套 `openxyos\\openxyos`：顶层已有 `backend-dist/server.js` 与 `dist/index.html` 时必须用 live 根。嵌套 cwd 会让 `node backend-dist/server.js` 立刻退出且 stdout/stderr 为空，安装空等 90s 后以退出码 12 失败。`start-sidecar.ps1` / 预配 / 桌面 Go / Python 启动路径统一按此选择 cwd；每次启动截断 `start.log`；Shell.Application 若未刷新日志则改走 explorer / Start-Process，Node fail-fast 不再伪装成 livez 超时。
 - Windows 安装详情不再把 openXYOS 预配的 UTF-8 Node/PowerShell 控制台（`[Error] POST /api/auth`、`[seed]`、中文 Server/WebSocket 状态）按系统 ANSI/GBK 打成乱码。NSIS 只用 `nsExec::Exec` 等退出码，详情页只显示本地化步骤结果；完整日志写入 `%LOCALAPPDATA%\\FreeOS\\openxyos\\provision.log` / `start.log`（UTF-8）。解压前停止并等待旧的 FreeOS openXYOS Node 退出；livez 通过即成功，不把启动期 auth 日志当失败。
diff --git a/README.md b/README.md
index 2d11d728..d83080cb 100644
--- a/README.md
+++ b/README.md
@@ -122,6 +122,7 @@ The TypeScript sidecar under `modules/openxyos/` is optional.
 | CLI | `uv run freeos org enable` · `uv run freeos org status` · `uv run freeos org loop run` |
 | Plugin | Admin → Plugins → **Organization OS** (`org-os`) |
 | API | `PATCH /api/org-module` with `{ "enabled": true }` |
+| Standalone commercial site | `uv run freeos org export-standalone --out dist/openxyos-web` — see [docs/org-export.md](docs/org-export.md) |
 
 Optional Node sidecar (export/sync/advanced deploy only):
 
diff --git a/README_CN.md b/README_CN.md
index 2dc6ed31..d56ee0ca 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -208,12 +208,12 @@ curl -fsSL https://finnie-1258344699.cos.ap-guangzhou.myqcloud.com/octop/install
 
 | 平台 | 制品 |
 |------|------|
-| Windows | `FreeOS-desktop-windows-amd64-<version>.exe`（64 位）/ `FreeOS-desktop-windows-arm64-<version>.exe`（ARM64）— NSIS 安装程序，内置 openXYOS，打开即可聊天+组织 |
+| Windows | `FreeOS-desktop-windows-amd64-<version>.exe`（64 位）/ `FreeOS-desktop-windows-arm64-<version>.exe`（ARM64）— NSIS 安装程序，单进程 FreeOS + 宿主内 Organization；不捆绑也不自动拉起 openXYOS Node |
 | macOS | `FreeOS-desktop-darwin-arm64-<version>.dmg`（Apple 芯片）/ `FreeOS-desktop-darwin-amd64-<version>.dmg`（Intel） |
 | Linux | `FreeOS-desktop-linux-amd64-<version>.tar.gz` / `FreeOS-desktop-linux-arm64-<version>.tar.gz` |
 | 飞牛 NAS（FnOS） | `Octop-fnos-docker-<version>.fpk`（依赖 Docker）/ `Octop-fnos-native-<version>.fpk`（无需 Docker）— 通过应用中心安装 |
 
-桌面客户端说明见 [desktop/README.md](desktop/README.md)，飞牛打包指南见 [fnos/README.md](fnos/README.md)。
+桌面客户端说明见 [desktop/README.md](desktop/README.md)，飞牛打包指南见 [fnos/README.md](fnos/README.md)。独立商业组织站见 [docs/org-export.md](docs/org-export.md)（`freeos org export-standalone`），不是默认安装器里的第二套 Node。
 
 **备选 — PyPI**（若你已自行管理 Python 环境）：
 
diff --git a/dashboard/src/pages/Organization/OrgMiniBrowser.tsx b/dashboard/src/pages/Organization/OrgMiniBrowser.tsx
index 621eaa1d..7600cd4c 100644
--- a/dashboard/src/pages/Organization/OrgMiniBrowser.tsx
+++ b/dashboard/src/pages/Organization/OrgMiniBrowser.tsx
@@ -1,3 +1,8 @@
+/**
+ * Leftover iframe chrome for the optional Node sidecar (`FREEOS_ORG_SIDECAR=1`).
+ * The default Organization workbench (`index.tsx`) does not mount this.
+ * Core org pages live in `dashboard/src/org-ui` and talk to `/api/org-module/*`.
+ */
 import { useMemo, type MutableRefObject } from "react";
 import { Button, Input, Tooltip } from "antd";
 import { ArrowLeft, ArrowRight, RotateCcw } from "lucide-react";
diff --git a/desktop/README.md b/desktop/README.md
index 4828c9ba..8e4b9ec2 100644
--- a/desktop/README.md
+++ b/desktop/README.md
@@ -6,8 +6,8 @@ Windows end-user product: **download the NSIS `.exe` → install → open FreeOS
 
 | Path | Role |
 |------|------|
-| [`portable/`](portable/) | Green zip packaging (CPython + host wheel + Node/openXYOS sidecar) |
-| [`src/`](src/) | Wails v3 shell: extract zip, start host + sidecar, tray/settings |
+| [`portable/`](portable/) | Green zip packaging (CPython + host wheel; Node/openXYOS sidecar opt-in) |
+| [`src/`](src/) | Wails v3 shell: extract zip, start host (sidecar only if `FREEOS_ORG_SIDECAR=1`), tray/settings |
 | [`package-release.sh`](package-release.sh) | Native end-to-end portable + Wails release build |
 
 ## Data directory
@@ -109,21 +109,23 @@ On first open the shell:
 
 ## Build green zip
 
-From repo root (needs Node 20+ so openXYOS can be built into the zip):
+From repo root (Node 20+ is only required to rebuild the dashboard or to
+opt into `SHIP_OPENXYOS_RUNTIME=1`):
 
 ```bash
 make -f desktop/portable/Makefile green
 ```
 
-The Node sidecar is optional. Package it with the green zip when you want
-advanced export/sync; skip it with `SKIP_ORG_SIDECAR=1`. Desktop/runtime
-never requires it for Organization.
+The Node sidecar is optional. Default green zips skip it (`SKIP_ORG_SIDECAR=1`).
+Package it only with `SHIP_OPENXYOS_RUNTIME=1` (or `SKIP_ORG_SIDECAR=0`) when
+you want advanced export/sync. Desktop/runtime never requires it for
+Organization.
 
 CI: `.github/workflows/octop-desktop.yml` (**name:** FreeOS Desktop Package)
 builds native platform/arch variants. `v*` tags and `workflow_dispatch`
 (platforms=`all`) run all six; pull requests that touch `desktop/` or
 `modules/openxyos/` build `darwin-*` and `windows-*` (amd64 + arm64). Each job
-creates the green zip (including the sidecar) and packages the Wails app.
+creates the slim green zip (Python host only) and packages the Wails app.
 
 This cloud/Linux VM cannot emit a Windows `.exe`. The job that does is
 **FreeOS Desktop Package** → matrix `windows-amd64` / `windows-arm64`
@@ -132,8 +134,9 @@ This cloud/Linux VM cannot emit a Windows `.exe`. The job that does is
 ## Build a complete desktop release
 
 Run the end-to-end script on the matching native host. It builds the Dashboard,
-creates and verifies the portable runtime (with openXYOS), embeds it into Wails,
-and produces the final native package:
+creates and verifies the portable Python host (Node/openXYOS only if
+`SHIP_OPENXYOS_RUNTIME=1`), embeds it into Wails, and produces the final
+native package:
 
 ```bash
 desktop/package-release.sh
diff --git a/desktop/src/build/stage_openxyos_runtime.py b/desktop/src/build/stage_openxyos_runtime.py
index 63149ca8..82a8dbc4 100644
--- a/desktop/src/build/stage_openxyos_runtime.py
+++ b/desktop/src/build/stage_openxyos_runtime.py
@@ -1,8 +1,10 @@
 #!/usr/bin/env python3
 """Build openxyos-runtime.zip from a green portable zip or staging tree.
 
-The Windows NSIS installer copies this zip into $INSTDIR and expands it to
-$INSTDIR\\openxyos so the finish log shows FE+BE, not only FreeOS.exe.
+Opt-in only. Default Windows/macOS/Linux packages do not call this script
+and do not ship the zip. Pass SHIP_OPENXYOS_RUNTIME=1 to stage it; NSIS
+then copies the zip into $INSTDIR but still does not extract or start Node
+unless FREEOS_ORG_SIDECAR=1 later.
 """
 
 from __future__ import annotations
diff --git a/desktop/src/build/windows/nsis/wails_tools.nsh b/desktop/src/build/windows/nsis/wails_tools.nsh
index 14485bf9..e5a7c7e0 100644
--- a/desktop/src/build/windows/nsis/wails_tools.nsh
+++ b/desktop/src/build/windows/nsis/wails_tools.nsh
@@ -142,15 +142,15 @@ RequestExecutionLevel "${REQUEST_EXECUTION_LEVEL}"
     ${EndIf}
 !macroend
 
-# Organization is in-host. Default Setup copies no openxyos-runtime.zip.
-# Opt-in builds (-DOPENXYOS_RUNTIME_ZIP_PRESENT) copy the zip + scripts
-# but still never extract, start Node, wait for livez, or Abort.
+# Organization is in-host. Default Setup copies no openxyos-runtime.zip
+# and does not create $INSTDIR\openxyos. Opt-in builds
+# (-DOPENXYOS_RUNTIME_ZIP_PRESENT) copy the zip + scripts but still
+# never extract, start Node, wait for livez, or Abort.
 # Do not FileWrite goto-label .cmd scripts here. Do not register logon autostart.
 !macro wails.provisionOpenXYOS
     !insertmacro wails.userLocalAppData
     SetDetailsPrint both
     DetailPrint "$(OPENXYOS_WORKDIR)"
-    CreateDirectory "$INSTDIR\openxyos"
     !ifdef OPENXYOS_RUNTIME_ZIP_PRESENT
         !if /FileExists "${OPENXYOS_RUNTIME_ZIP}"
             DetailPrint "$(OPENXYOS_COPY_ZIP)"
@@ -159,6 +159,7 @@ RequestExecutionLevel "${REQUEST_EXECUTION_LEVEL}"
             File "provision-openxyos.cmd"
             File "start-sidecar.ps1"
             File "start-sidecar.cmd"
+            CreateDirectory "$INSTDIR\openxyos"
             DetailPrint "$(OPENXYOS_OPTIONAL_SKIP)"
         !else
             !error "OPENXYOS_RUNTIME_ZIP_PRESENT is set but ${OPENXYOS_RUNTIME_ZIP} is missing"
diff --git a/docker/README.md b/docker/README.md
index e765a376..8537e6e1 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -2,7 +2,14 @@
 
 ---
 
-This directory contains the Docker build and deployment assets for Octop.
+This directory contains the Docker build and deployment assets for Octop /
+FreeOS. Compose stays **one Python process**. There is no Node/openXYOS
+sidecar service. Organization runs in-host (`/api/org-module/*`).
+
+**Home directory names:** the product name is `FREEOS_HOME`. Compose and
+this image still use `OCTOP_*` and `~/.octop` as compatibility aliases
+(`HOME=/data` → `/data/.octop`). Set `FREEOS_HOME` (or `OCTOP_HOME`) if
+you want an explicit path; the app honors `FREEOS_HOME` first.
 
 ### Files
 
@@ -57,6 +64,8 @@ bash docker/docker_build.sh
 | Variable | Default | Description |
 |----------|---------|-------------|
 | `HOME` | `/data` | Must be `/data` so `~/.octop` maps to the data volume |
+| `FREEOS_HOME` | _(unset)_ | Product home. When set, wins over `OCTOP_HOME` / `~/.octop` |
+| `OCTOP_HOME` | _(unset)_ | Legacy alias for the same home directory |
 | `OCTOP_PORT` | `8088` | HTTP listen port |
 | `OCTOP_DEFAULT_PASSWORD` | _(unset)_ | First-run admin password (≥8 chars, letters + digits). When unset, a random password is generated and written to `credential.txt` |
 | `OCTOP_ADMIN_USERNAME` | `admin` | Initial admin username |
diff --git a/docker/README_CN.md b/docker/README_CN.md
index 4be162cf..28da4428 100644
--- a/docker/README_CN.md
+++ b/docker/README_CN.md
@@ -2,7 +2,13 @@
 
 ---
 
-本目录包含 Octop 的 Docker 构建与部署相关文件。
+本目录包含 Octop / FreeOS 的 Docker 构建与部署相关文件。Compose **只有一个
+Python 进程**，没有 Node / openXYOS 边车。Organization 在宿主内运行
+（`/api/org-module/*`）。
+
+**目录命名：** 产品名是 `FREEOS_HOME`。本镜像与 Compose 仍用 `OCTOP_*` 和
+`~/.octop` 作为兼容别名（`HOME=/data` → `/data/.octop`）。需要显式路径时
+设置 `FREEOS_HOME`（或遗留的 `OCTOP_HOME`）；应用优先读 `FREEOS_HOME`。
 
 ### 文件说明
 
@@ -57,6 +63,8 @@ bash docker/docker_build.sh
 | 变量 | 默认值 | 说明 |
 |------|--------|------|
 | `HOME` | `/data` | 必须为 `/data`，数据目录映射到 `~/.octop` |
+| `FREEOS_HOME` | _(未设置)_ | 产品家目录。设置后优先于 `OCTOP_HOME` / `~/.octop` |
+| `OCTOP_HOME` | _(未设置)_ | 同一家目录的遗留别名 |
 | `OCTOP_PORT` | `8088` | HTTP 服务端口 |
 | `OCTOP_DEFAULT_PASSWORD` | _(未设置)_ | 首次管理员密码（≥8 位，字母+数字）。未设置时自动生成随机密码并写入 `credential.txt` |
 | `OCTOP_ADMIN_USERNAME` | `admin` | 首次管理员用户名 |
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index 8cb5d3d0..82a4144e 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -1,5 +1,8 @@
 # =============================================================================
-# Octop — Docker Compose
+# FreeOS / Octop — Docker Compose (single Python process)
+#
+# One service. No Node / openXYOS sidecar. Organization is in-host.
+# Product home name is FREEOS_HOME; OCTOP_* and ~/.octop remain aliases.
 #
 # 用法（在仓库根目录执行）:
 #   docker compose -f docker/docker-compose.yml up -d
diff --git a/docker/docker-entrypoint.sh b/docker/docker-entrypoint.sh
index 42b8b32b..b212c4bf 100644
--- a/docker/docker-entrypoint.sh
+++ b/docker/docker-entrypoint.sh
@@ -4,6 +4,8 @@
 #
 # 环境变量:
 #   HOME                      — 必须为 /data，使 ~/.octop 映射到数据卷
+#   FREEOS_HOME               — 产品家目录（可选；应用优先于 OCTOP_HOME）
+#   OCTOP_HOME                — 遗留别名。入口脚本仍用 ~/.octop 做首次 init
 #   OCTOP_DEFAULT_PASSWORD    — 首次管理员密码（须 ≥8 位且含字母和数字；
 #                               不设置则自动生成随机密码，凭据写入
 #                               /data/.octop/credential.txt）
diff --git a/docs/adr/001-single-process-model.md b/docs/adr/001-single-process-model.md
index 480f0f26..242f067e 100644
--- a/docs/adr/001-single-process-model.md
+++ b/docs/adr/001-single-process-model.md
@@ -33,3 +33,11 @@ Everything runs in a single Python process served by uvicorn. There is no extern
 - All async; blocking calls must use `run_in_executor`.
 - `SharedServices` (DI container) is process-global — safe because the process owns all state.
 - Future scale-out would require extracting the worker into a separate process and adding a queue; that seam is already partially visible in `infra/gateway/processor.py`.
+
+## Later confirmation (FreeOS Organization, 2026-09)
+
+Organization control-plane UI and BFF stay in this same Python process
+(`/api/org-module/*`, Dashboard `/organization`). A Node openXYOS sidecar
+is **not** part of the default installer (Phase 5). Opt in only with
+`FREEOS_ORG_SIDECAR=1` / `SHIP_OPENXYOS_RUNTIME=1`. This does not change
+the original decision: one process, one port, no required extra runtime.
diff --git a/docs/adr/003-org-ui-single-source-dual-delivery.md b/docs/adr/003-org-ui-single-source-dual-delivery.md
index 0455305d..7f02fdc0 100644
--- a/docs/adr/003-org-ui-single-source-dual-delivery.md
+++ b/docs/adr/003-org-ui-single-source-dual-delivery.md
@@ -94,4 +94,4 @@ Phase 2 proves the contract on **Announcements** (see [org-merge-plan.md](../org
 
 ## Follow-through
 
-Implementation sequencing, overlap matrix, package layout, API ownership, and Phase 2 acceptance criteria live in [org-merge-plan.md](../org-merge-plan.md). This ADR does not move pages or change the installer.
+Implementation sequencing, overlap matrix, package layout, API ownership, and Phase 2–5 status live in [org-merge-plan.md](../org-merge-plan.md). Phase 5 default installer is **zero-Node**; standalone commercial deploy is [org-export.md](../org-export.md), not a second always-on runtime.
diff --git a/docs/architecture-integration.md b/docs/architecture-integration.md
index 6463add7..caab3ac9 100644
--- a/docs/architecture-integration.md
+++ b/docs/architecture-integration.md
@@ -13,7 +13,8 @@ FreeOS/Octop remains the execution runtime.
 
 - [ADR 001](adr/001-single-process-model.md) — single process, no external queue
 - [ADR 003](adr/003-org-ui-single-source-dual-delivery.md) — org-ui single source, dual delivery (Accepted)
-- [org-merge-plan.md](org-merge-plan.md) — Phases 0–5; Phase 3 in progress (org chart / employees / skills / governance / knowledge / tasks / reflections / settings / agents)
+- [org-merge-plan.md](org-merge-plan.md) — Phases 0–5; Phase 5 default installer is zero-Node (sidecar opt-in)
+- [org-export.md](org-export.md) — standalone commercial Organization site (`freeos org export-standalone`)
 - [asset-loop.md](asset-loop.md) — operator self-growth loop
 - [ADR index](adr/)
 
diff --git a/docs/org-export.md b/docs/org-export.md
index a41fe9b2..02533d8d 100644
--- a/docs/org-export.md
+++ b/docs/org-export.md
@@ -1,8 +1,8 @@
-# 独立组织站导出（Phase 4）
+# 独立组织站导出（Phase 4 包 + Phase 5 默认安装器）
 
 `freeos org export-standalone --out <dir>` 从 **同一套** `dashboard/src/org-ui` 生成可部署的 openXYOS 风格独立站。这是商业加售的交付物，不是第二份手维护前端。
 
-默认 FreeOS 安装器 **不** 因此改成捆绑 Node。Sidecar 仍是可选兼容（`FREEOS_ORG_SIDECAR` / `SHIP_OPENXYOS_RUNTIME`）。安装器瘦身是 **Phase 5**。
+默认 FreeOS 安装器 **不** 捆绑 Node，也 **不** 自动拉起 openXYOS。Sidecar 仅作可选兼容（`FREEOS_ORG_SIDECAR=1` / `SHIP_OPENXYOS_RUNTIME=1`）。这是 **Phase 5** 已落地的默认拓扑：一个 Python 进程 + 宿主内 Organization。
 
 ## 生成
 
@@ -51,7 +51,7 @@ FREEOS_UPSTREAM=http://127.0.0.1:8088 docker compose up --build
 | UI | 本包 SPA（org-ui） | 同一套 org-ui |
 | API | 反向代理到 FreeOS `/api/org-module/*` | 本包自包含服务实现同一合同 |
 | 身份 | 本地 JWT，登录打 FreeOS `/api/auth/login` | 客户自己的账号体系发本地 JWT |
-| 安装器 | 不变；sidecar 仍可选 | Phase 5：默认安装器零 Node |
+| 安装器 | **已落地（Phase 5）**：默认零 Node，sidecar 仅 opt-in | 保持单进程；不把独立站 Node 打进默认安装包 |
 
 `VITE_API_BASE` 默认 `/api`（同源）。不要在浏览器里直连另一个源的 FreeOS，除非那个宿主已配好 CORS。推荐始终走代理。
 
@@ -63,9 +63,9 @@ FREEOS_UPSTREAM=http://127.0.0.1:8088 docker compose up --build
 | `FREEOS_UPSTREAM` | 运行 | 拥有 `/api/org-module` 与 `/api/auth` 的 FreeOS 源 |
 | `PORT` | `npm start` / Vite | 监听端口，默认 `3780` |
 
-## 非目标（本波）
+## 非目标 / 残留
 
-- 从默认安装器里摘掉 sidecar（Phase 5）
-- 重写整套 Express → 独立 Node API
+- 重写整套 Express → 独立 Node API（导出仍代理到宿主 `/api/org-module`）
 - 迁 openXYOS Chat
 - 抽出 `packages/org-ui` monorepo（仅当 Dashboard Vite 图必须脱离时再做）
+- 把独立站 Node 打进默认 Windows/macOS/Linux 安装器（明确不做）
diff --git a/docs/org-merge-plan.md b/docs/org-merge-plan.md
index a6b50add..c622da7a 100644
--- a/docs/org-merge-plan.md
+++ b/docs/org-merge-plan.md
@@ -1,6 +1,6 @@
 # 组织模块合并计划（openXYOS → FreeOS Dashboard）
 
-**状态：** Phase 3 Open-12 宿主 UI **已完成**（Chat 永久不迁）。Phase 4 独立站导出 **已起步**：`freeos org export-standalone` 产出可运行 Vite + Docker 包（共享 `org-ui` + 本地 JWT IdentityBridge + 代理到宿主 `/api/org-module`）。自包含 org API 与默认安装器瘦身仍是 Phase 5。详见 [org-export.md](org-export.md)。
+**状态：** Phase 0–4 已落地（#55 宿主内 Organization + Open-12 宿主 UI + `export-standalone`）。**Phase 5 默认安装器瘦身已完成**：Windows/macOS/Linux 默认包不捆绑、不解压、不自动拉起 openXYOS Node；`FREEOS_ORG_SIDECAR` / `SHIP_OPENXYOS_RUNTIME=1` 仍是可选高级路径。残留：导出站自包含 org API、可选 `packages/org-ui` 抽包。详见 [org-export.md](org-export.md)。
 **日期：** 2026-09-19
 **依据：** Phase 0 迁移图、[architecture-integration.md](architecture-integration.md)、[asset-loop.md](asset-loop.md)、[ADR 001](adr/001-single-process-model.md)、#55 宿主内 Organization
 
@@ -26,8 +26,8 @@ Phase 1 冻结了合同。Phase 2（通知公告）与 Phase 3 Open-12 宿主页
 | **1** 合同冻结 | ADR + 本计划：单源双交付、包布局、API 归属、IdentityBridge、Phase 2 验收 | **本文** |
 | **2** 垂直切片 | **通知公告 Announcements** 按合同落地（Dashboard 路由 + 可导出同一页面） | **已完成** |
 | **3** Open-12 其余页 | 工作台、组织架构、员工、技能、智能体、任务、知识、反思、治理 UI、设置 | **已完成（Chat 除外）**：架构 / 员工 / 技能 / 治理 / 知识 / 任务 / 反思 / 设置 / 智能体 / 薄 Workspace overview 已迁。**Chat 永久不迁** |
-| **4** 身份与导出 | 已迁页面走 IdentityBridge；`export-standalone` 产出可运行独立站（Vite SPA + 本地 JWT + 代理到宿主 org-module API） | **进行中**：可运行包已落地；自包含 Node API 仍是目标终态 |
-| **5** 安装器瘦身 | 默认安装器去掉 sidecar / 保持零 Node；可选 `packages/org-ui` 抽取 | **未开始**（明确推迟；sidecar 仍可选） |
+| **4** 身份与导出 | 已迁页面走 IdentityBridge；`export-standalone` 产出可运行独立站（Vite SPA + 本地 JWT + 代理到宿主 org-module API） | **已完成（可运行包）**；自包含 Node API 仍是目标终态 |
+| **5** 安装器瘦身 | 默认安装器去掉 sidecar / 保持零 Node | **已完成**。残留：自包含 org API、可选 `packages/org-ui` 抽包 |
 
 Phase 0 已落地、Phase 1 **只冻结合同**。Phase 2 起才允许搬页面。
 
@@ -529,13 +529,35 @@ Phase 3 Open-12 宿主 UI 至此收口。下一步是 Phase 4 导出与 Identity
 4. 部署物：`Dockerfile`、`docker-compose.yml`、导出目录 `README.md`、仓库 [org-export.md](org-export.md)。
 5. Chat 仍不导出；`/chat`、`/experts`、`/system-settings` 为深链说明页。
 
-### 本阶段明确推迟（Phase 5）
+### Phase 4 当时推迟、现已分流
 
-| 推迟项 | 原因 |
+| 项 | 现状 |
+|---|---|
+| 从默认安装器摘掉 sidecar | **Phase 5 已完成。** 默认 NSIS / 绿包 / Docker 零 Node；`FREEOS_ORG_SIDECAR=1` / `SHIP_OPENXYOS_RUNTIME=1` 仍可选 |
+| 自包含 org-module Node/Fastify 服务 | **残留。** 过渡期仍复用宿主 BFF；`server/proxy.mjs` 是占位 |
+| `packages/org-ui` 抽包 | **残留。** 导出已拷贝 org-ui；不必先拆 monorepo |
+
+---
+
+## Phase 5 进度：默认安装器瘦身
+
+默认交付是 **一个 FreeOS 进程 + 宿主内 Organization**。客户不必再装第二套 Node/openXYOS。
+
+### 已落地
+
+1. 默认 Windows NSIS / 绿包 / Desktop CI **不** 打入 `openxyos-runtime.zip` 或 `org-sidecar`（`SKIP_ORG_SIDECAR=1`，`SHIP_OPENXYOS_RUNTIME` 默认 `0`）。
+2. Setup **不** `nsExec` 预配、不解压、不等 livez、不注册开机自启；缺 zip 不是安装失败。
+3. 桌面 / 主机启动默认不设 `OPENXYOS_BASE_URL`，不拉起 3780。Organization 首屏是 `/organization` + `/api/org-module/*`。
+4. `modules/openxyos` 仍保留给导出 / 开发 / `FREEOS_ORG_SIDECAR=1` 高级路径，不是默认运行时。
+5. 独立商业站走 `freeos org export-standalone`（[org-export.md](org-export.md)），不是默认安装器。
+
+### 残留（不挡默认安装）
+
+| 残留 | 说明 |
 |---|---|
-| 从默认安装器摘掉 sidecar | 用户明确本波不做；`FREEOS_ORG_SIDECAR` 仍可选 |
-| 自包含 org-module Node/Fastify 服务 | 过渡期复用宿主 BFF；`server/proxy.mjs` 是占位 |
-| `packages/org-ui` 抽包 | 导出已拷贝 org-ui；不必先拆 monorepo |
+| 导出站自包含 org API | 仍代理到 `FREEOS_UPSTREAM`；不是第二套默认桌面运行时 |
+| `packages/org-ui` 抽包 | 仅当 Dashboard Vite 图必须脱离时再做 |
+| 未迁商业 `App.tsx` 路由 | 合同 / 资产 / 考勤等仍不加售进默认 Dashboard |
 
 ---
 
diff --git a/scripts/org-export/README.md b/scripts/org-export/README.md
index 5fe08699..dd9d1770 100644
--- a/scripts/org-export/README.md
+++ b/scripts/org-export/README.md
@@ -39,7 +39,12 @@ Interim API: SPA + proxy to a FreeOS host (`FREEOS_UPSTREAM`).
 Target end-state: self-contained server in the export (see
 [docs/org-export.md](../../docs/org-export.md)).
 
-## Phase 5 (deferred)
+## Phase 5 (default installer)
 
-- Slim the default installer (sidecar remains opt-in here)
+Default FreeOS installers stay **zero-Node**. This export is an explicit
+operator / commercial action — it does not change the desktop package.
+
+Residual (not default install):
+
+- Self-contained org API (export still proxies to `FREEOS_UPSTREAM`)
 - Optional `packages/org-ui` extraction if the Dashboard Vite graph must be left behind
diff --git a/src/octop/cli/commands/org.py b/src/octop/cli/commands/org.py
index a50a7c54..f4b463e5 100644
--- a/src/octop/cli/commands/org.py
+++ b/src/octop/cli/commands/org.py
@@ -55,8 +55,8 @@ def org_enable() -> None:
     """Turn on the organization module (does not start the sidecar)."""
     service = _service()
     service.set_enabled(True)
-    click.echo("Organization module enabled.")
-    click.echo(f"Start the sidecar with: {service.status().start_command}")
+    click.echo("Organization module enabled (in-host).")
+    click.echo("Node sidecar is optional. Set FREEOS_ORG_SIDECAR=1 only for advanced export/sync.")
 
 
 @org.command("disable")
@@ -386,7 +386,7 @@ def export_standalone(out_dir: Path) -> None:
 
     Copies dashboard/src/org-ui plus a Vite + Docker shell (local JWT
     IdentityBridge, /api proxy to a FreeOS host). Chat is not exported.
-    Sidecar stays in the default installer (Phase 5).
+    Default FreeOS installers stay zero-Node; this export is opt-in.
     """
     from octop.modules.org_os.export_standalone import write_standalone_scaffold
 
diff --git a/src/octop/modules/org_os/export_standalone.py b/src/octop/modules/org_os/export_standalone.py
index f593250d..9bf8ab73 100644
--- a/src/octop/modules/org_os/export_standalone.py
+++ b/src/octop/modules/org_os/export_standalone.py
@@ -138,7 +138,7 @@ def _modules_manifest() -> dict[str, Any]:
             },
         },
         "not_exported": ["chat"],
-        "todo": "Phase 5: slim default installer (sidecar stays opt-in); self-contained org API",
+        "todo": "self-contained org API (export still proxies to FREEOS_UPSTREAM); optional packages/org-ui extraction",
     }
 
 
@@ -181,5 +181,5 @@ def write_standalone_scaffold(out_dir: Path) -> dict[str, Any]:
         "files": files,
         "auth": "standalone local JWT (openxyos.standalone.jwt)",
         "api": "proxies /api to FREEOS_UPSTREAM (interim); self-contained server is the target end-state",
-        "todo": "Phase 5: slim default installer (sidecar remains opt-in)",
+        "todo": "self-contained org API; optional packages/org-ui extraction",
     }
diff --git a/tests/unit/desktop/test_nsis_uninstall.py b/tests/unit/desktop/test_nsis_uninstall.py
index 399b8142..83c8530b 100644
--- a/tests/unit/desktop/test_nsis_uninstall.py
+++ b/tests/unit/desktop/test_nsis_uninstall.py
@@ -230,6 +230,11 @@ def test_nsis_runs_openxyos_provisioner_subprocess() -> None:
     assert "OPENXYOS_OPTIONAL_ABSENT" in provision
     assert 'File "/oname=openxyos-runtime.zip"' in provision
     assert "OPENXYOS_RUNTIME_ZIP_PRESENT is set but" in provision
+    create_dir = provision.index('CreateDirectory "$INSTDIR\\openxyos"')
+    ifdef = provision.index("!ifdef OPENXYOS_RUNTIME_ZIP_PRESENT")
+    absent = provision.index("OPENXYOS_OPTIONAL_ABSENT")
+    assert ifdef < create_dir < absent
+    assert "CreateDirectory" not in provision[absent:]
     assert "openxyos-runtime.zip missing" not in nsh
     assert "安装继续" in nsi
     assert "Setup continues" in nsi
diff --git a/tests/unit/desktop/test_phase5_defaults.py b/tests/unit/desktop/test_phase5_defaults.py
new file mode 100644
index 00000000..2f0a6613
--- /dev/null
+++ b/tests/unit/desktop/test_phase5_defaults.py
@@ -0,0 +1,98 @@
+"""Phase 5: default install is one FreeOS process; sidecar stays opt-in."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+REPO = Path(__file__).resolve().parents[3]
+
+
+def test_package_scripts_default_skip_org_sidecar() -> None:
+    package = (REPO / "desktop" / "portable" / "package.sh").read_text(encoding="utf-8")
+    assert "SHIP_OPENXYOS_RUNTIME:-0" in package or '"${SHIP_OPENXYOS_RUNTIME:-0}"' in package
+    assert "SKIP_ORG_SIDECAR=1" in package
+    task = (REPO / "desktop" / "src" / "build" / "windows" / "Taskfile.yml").read_text(
+        encoding="utf-8"
+    )
+    assert 'SHIP_OPENXYOS_RUNTIME | default "0"' in task
+    workflow = (REPO / ".github" / "workflows" / "octop-desktop.yml").read_text(encoding="utf-8")
+    assert 'SKIP_ORG_SIDECAR: "1"' in workflow
+    assert "SHIP_OPENXYOS_RUNTIME=0" in workflow
+    assert "must not embed org-sidecar" in workflow
+
+
+def test_nsis_default_macro_does_not_create_openxyos_dir() -> None:
+    nsh = (REPO / "desktop" / "src" / "build" / "windows" / "nsis" / "wails_tools.nsh").read_text(
+        encoding="utf-8"
+    )
+    provision = nsh[
+        nsh.index("!macro wails.provisionOpenXYOS") : nsh.index("!macro wails.openxyosFailDetail")
+    ]
+    assert "nsExec::Exec" not in provision
+    assert "Abort" not in provision
+    absent = provision[provision.index("OPENXYOS_OPTIONAL_ABSENT") :]
+    assert "CreateDirectory" not in absent
+    assert 'File "/oname=openxyos-runtime.zip"' not in absent
+
+
+def test_docs_do_not_require_bundled_openxyos() -> None:
+    readme_cn = (REPO / "README_CN.md").read_text(encoding="utf-8")
+    assert "内置 openXYOS" not in readme_cn
+    assert "宿主内 Organization" in readme_cn
+    assert "docs/org-export.md" in readme_cn
+    readme = (REPO / "README.md").read_text(encoding="utf-8")
+    assert "docs/org-export.md" in readme
+    assert "FREEOS_ORG_SIDECAR=1" in readme
+    desktop = (REPO / "desktop" / "README.md").read_text(encoding="utf-8")
+    assert "including the sidecar" not in desktop
+    assert "with openXYOS" not in desktop
+    assert "SHIP_OPENXYOS_RUNTIME=1" in desktop
+    export_doc = (REPO / "docs" / "org-export.md").read_text(encoding="utf-8")
+    assert "**不** 捆绑 Node" in export_doc
+    assert "不** 自动拉起 openXYOS" in export_doc
+    assert "Phase 5" in export_doc
+    plan = (REPO / "docs" / "org-merge-plan.md").read_text(encoding="utf-8")
+    assert "Phase 5 默认安装器瘦身已完成" in plan or "**已完成**" in plan
+    table = plan[plan.index("| **5**") : plan.index("| **5**") + 240]
+    assert "已完成" in table
+    assert "未开始" not in table
+    changelog = (REPO / "CHANGELOG.md").read_text(encoding="utf-8")
+    assert "Organization Phase 5" in changelog
+    assert "单进程 FreeOS" in changelog
+
+
+def test_adr_001_and_003_record_zero_node_default() -> None:
+    adr001 = (REPO / "docs" / "adr" / "001-single-process-model.md").read_text(encoding="utf-8")
+    assert "FREEOS_ORG_SIDECAR=1" in adr001
+    assert "SHIP_OPENXYOS_RUNTIME=1" in adr001
+    adr003 = (REPO / "docs" / "adr" / "003-org-ui-single-source-dual-delivery.md").read_text(
+        encoding="utf-8"
+    )
+    assert "zero-Node" in adr003
+    assert "org-export.md" in adr003
+
+
+def test_docker_compose_stays_single_python_process() -> None:
+    compose_text = (REPO / "docker" / "docker-compose.yml").read_text(encoding="utf-8")
+    assert "services:\n  octop:" in compose_text
+    assert "openxyos:" not in compose_text
+    assert "3780" not in compose_text
+    assert "FREEOS_HOME" in compose_text
+    assert "single Python process" in compose_text
+    readme = (REPO / "docker" / "README.md").read_text(encoding="utf-8")
+    readme_cn = (REPO / "docker" / "README_CN.md").read_text(encoding="utf-8")
+    for body in (readme, readme_cn):
+        assert "FREEOS_HOME" in body
+        assert "OCTOP_HOME" in body
+        assert "sidecar" in body.lower() or "边车" in body
+
+
+def test_org_enable_does_not_require_sidecar() -> None:
+    source = (REPO / "src" / "octop" / "cli" / "commands" / "org.py").read_text(encoding="utf-8")
+    assert "Organization module enabled (in-host)." in source
+    assert "Start the sidecar with:" not in source
+    assert "FREEOS_ORG_SIDECAR=1" in source
+    export = (REPO / "src" / "octop" / "modules" / "org_os" / "export_standalone.py").read_text(
+        encoding="utf-8"
+    )
+    assert "slim default installer" not in export