diff --git a/CHANGELOG.md b/CHANGELOG.md
index f16dbf1..eb00dbb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ user-facing notes live in [`docs/updates/`](docs/updates/) (English and
 
 ## Unreleased
 
+## 2.3.0 — 2026-10-14
+
 ### Added
 
 - Editor: `sca cell ls|get|put|insert|rm|run` edits the open notebook's cells through the
diff --git a/README.md b/README.md
index 430b377..cacb76a 100644
--- a/README.md
+++ b/README.md
@@ -149,23 +149,20 @@ the full crank cycle sweeps clean in the same sim ·
 
 ---
 
-## Update Notes (2.2.2)
+## Update Notes (2.3.0)
 
 > Validate generated definitions, assembly constraints, and manufacturing
 > geometry before production use.
 
-- **Code completion from the SDK.** In the editor, `scad.` (and `scad.ql.`,
-  `scad.std.gear.`) lists the real functions with their signatures and
-  docstrings. Accepting one, or typing `(` after its name, writes the call with
-  every required parameter as `name=`, and Tab moves between them; inside a call
-  the parameters not given yet complete as `name=`.
-- **New notebooks from the workspace tab.** A **new** action starts a part, or
-  an assembly that uses the first two parts, from the SDK's template; an empty
-  workspace opens on that form.
-- **Fix.** The cell editors no longer rebuild their configuration on every
-  render, which dropped a snippet in progress.
-
-Full notes for this version: [`docs/updates/2.2.2.md`](docs/updates/2.2.2.md).
+- **The editor takes in edits made to the notebook file.** An agent's saved change is applied
+  cell by cell (changed cells update and run again, no reload), and is no longer written over by
+  the editor. If a cell was edited in both places, the file's version is kept and your unsaved
+  text goes to the log. Notebooks added to the workspace appear in the list by themselves.
+- **`sca cell` and `sca new`.** `sca cell ls|get|put|insert|rm|run` edits the open notebook's cells
+  through the running editor (the page updates live, each write prints the cell's status and
+  errors); `sca new NAME` creates a notebook the editor then lists.
+
+Full notes for this version: [`docs/updates/2.3.0.md`](docs/updates/2.3.0.md).
 Earlier versions: the [changelog](CHANGELOG.md) and [`docs/updates/`](docs/updates/).
 
 ---
@@ -186,7 +183,7 @@ in a compact public API for creating solids, applying features, tagging semantic
 intent, querying topology, exporting manufacturing files, and translating recorded
 models into FreeCAD workflows.
 
-Current release: `simplecadapi==2.2.2`.
+Current release: `simplecadapi==2.3.0`.
 
 ## What It Provides
 
@@ -701,6 +698,7 @@ and the [STEP reconstruction workflow](docs/skill/references/workflows/step-reco
 
 ## Documentation
 
+- 2.3.0 update notes: [`docs/updates/2.3.0.md`](docs/updates/2.3.0.md)
 - 2.2.2 update notes: [`docs/updates/2.2.2.md`](docs/updates/2.2.2.md)
 - 2.2.1 update notes: [`docs/updates/2.2.1.md`](docs/updates/2.2.1.md)
 - 2.1.3b1 update notes: [`docs/updates/2.1.3b1.md`](docs/updates/2.1.3b1.md)
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 801891d..aa93996 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -133,18 +133,18 @@ CalculiX 静力 FEM（边界面按保真的 `interface.*` 标签选取，仿真
 
 ---
 
-## 更新日志（2.2.2）
+## 更新日志（2.3.0）
 
 > 投入生产前请验证生成的定义、装配约束和制造几何。
 
-- **来自 SDK 的代码补全。** 在编辑器里，输入 `scad.`（以及 `scad.ql.`、`scad.std.gear.`）
-  会列出真实存在的函数、签名和文档说明。选中一个函数，或在函数名后输入 `(`，会把每个必填
-  参数写成 `name=`，Tab 在它们之间跳转；在调用括号内，还没写的参数会补全成 `name=`。
-- **在工作区页面创建 notebook。** 新增的 **new** 按 SDK 模板创建一个零件，或一个使用前两个
-  零件的装配；空工作区会直接打开这个表单。
-- **修复。** cell 编辑器不再每次渲染都重建配置，这会让进行中的占位跳转丢失。
+- **编辑器会接收对 notebook 文件的修改。** agent 保存的修改会按 cell 逐个应用（变化的 cell 更新并重新运行，
+  不刷新页面），不再被编辑器覆盖。同一个 cell 两边都改时，保留文件里的版本，你未保存的文字记入日志。
+  工作区里新增的 notebook 会自动出现在列表中。
+- **`sca cell` 和 `sca new`。** `sca cell ls|get|put|insert|rm|run` 通过运行中的编辑器修改打开的
+  notebook 的 cell（页面实时更新，每次写入都打印该 cell 的状态和错误）；`sca new NAME` 创建一个
+  编辑器随即列出的 notebook。
 
-本版本的完整说明：[`docs/updates/2.2.2.zh-CN.md`](docs/updates/2.2.2.zh-CN.md)。
+本版本的完整说明：[`docs/updates/2.3.0.zh-CN.md`](docs/updates/2.3.0.zh-CN.md)。
 更早的版本：见[更新日志](CHANGELOG.md)和 [`docs/updates/`](docs/updates/)。
 
 ---
@@ -162,7 +162,7 @@ CalculiX 静力 FEM（边界面按保真的 `interface.*` 标签选取，仿真
 
 SimpleCADAPI 是一个基于 OCP 的 Python CAD SDK，提供清晰的函数式建模操作和可重放的模型图。它在 OpenCascade 几何内核之上提供精简的公共 API，可用于创建实体、应用特征、添加语义标签、查询拓扑、导出制造文件，以及将记录的模型转换为 FreeCAD 工作流。
 
-当前版本：`simplecadapi==2.2.2`。
+当前版本：`simplecadapi==2.3.0`。
 
 ## 核心能力
 
@@ -588,6 +588,7 @@ uv run --extra fem python examples/ap242_gmsh_volume_mesh/run_calculix.py
 
 ## 文档
 
+- 2.3.0 更新说明：[`docs/updates/2.3.0.zh-CN.md`](docs/updates/2.3.0.zh-CN.md)
 - 2.2.2 更新说明：[`docs/updates/2.2.2.zh-CN.md`](docs/updates/2.2.2.zh-CN.md)
 - 2.2.1 更新说明：[`docs/updates/2.2.1.zh-CN.md`](docs/updates/2.2.1.zh-CN.md)
 - 2.1.3b1 更新说明：[`docs/updates/2.1.3b1.zh-CN.md`](docs/updates/2.1.3b1.zh-CN.md)
diff --git a/docs/skill/SKILL.md b/docs/skill/SKILL.md
index 7e2f597..2079717 100644
--- a/docs/skill/SKILL.md
+++ b/docs/skill/SKILL.md
@@ -4,9 +4,9 @@ description: Build, assemble, inspect, reconstruct, and export parametric CAD mo
 license: Apache-2.0
 metadata:
   project: simplecadapi
-  version: 2.2.2
+  version: 2.3.0
   package-name: simplecadapi
-  package-version: 2.2.2
+  package-version: 2.3.0
 ---
 
 # SimpleCAD SDK Skill
diff --git a/docs/updates/2.3.0.md b/docs/updates/2.3.0.md
new file mode 100644
index 0000000..ce1a1f8
--- /dev/null
+++ b/docs/updates/2.3.0.md
@@ -0,0 +1,37 @@
+# 2.3.0 Update Notes
+
+The editor (`sca edit`) and an agent can now work on the same notebook without overwriting each other.
+
+## The editor takes in edits made to the file
+
+Before, the editor held the open notebook in memory and rewrote the file on each edit, so a change
+an agent saved was overwritten by the editor's next save and never shown. Now the file is watched:
+a saved change is compared with the editor's cells and applied cell by cell. Changed cells are
+updated and run again, added or removed cells appear or go away, and the page does not reload or
+flicker. A change to the setup cell or an `@app.function` cell restarts the kernel instead; a file
+that does not parse is ignored until the next save that does.
+
+If a cell was edited in both places, **the file's version is kept** and the text you had not saved
+goes to the log at the bottom. Notebooks added to or removed from the workspace appear in the list
+by themselves.
+
+## `sca cell` and `sca new`
+
+```bash
+sca cell ls [--code]                 # numbered cells with status, errors and output
+sca cell get 3
+echo 'L = 90' | sca cell put 3       # replace a cell's code and run it
+sca cell insert --after 3 -f new.py
+sca cell rm 4
+sca cell run [CELL ...]
+sca new bracket --kind part          # a new notebook, listed by the running editor
+```
+
+These go through the running editor, found by `<workspace>/.sca-editor/server.json`: the page shows
+the change live and each write prints the touched cell's status, errors and output. With no editor
+running, or another notebook open, `ls` and `get` read the file and the write commands refuse: edit
+the file directly then.
+
+The skill (`editor-collaboration`) and `landing.md` now tell agents to work this way.
+
+See the [changelog](../../CHANGELOG.md) for the complete list.
diff --git a/docs/updates/2.3.0.zh-CN.md b/docs/updates/2.3.0.zh-CN.md
new file mode 100644
index 0000000..a130d6e
--- /dev/null
+++ b/docs/updates/2.3.0.zh-CN.md
@@ -0,0 +1,33 @@
+# 2.3.0 更新说明
+
+`sca edit` 编辑器和 agent 现在可以同时处理同一个 notebook，互不覆盖。
+
+## 编辑器会接收对文件的修改
+
+以前编辑器把打开的 notebook 放在内存里，每次编辑都重写文件，agent 保存的修改会被编辑器的下一次保存
+覆盖，也不会显示出来。现在编辑器会监视文件：保存后的修改会与编辑器里的 cell 对比，按 cell 逐个应用。
+变化的 cell 会更新并重新运行，新增或删除的 cell 会出现或消失，页面不会刷新或闪烁。setup cell 或
+`@app.function` cell 的修改会重启 kernel；无法解析的文件会被忽略，直到下一次可解析的保存。
+
+如果同一个 cell 两边都改了，**保留文件里的版本**，你还没保存的文字会记在底部日志里。工作区里新增或删除的
+notebook 会自动出现在列表中。
+
+## `sca cell` 和 `sca new`
+
+```bash
+sca cell ls [--code]                 # 带编号的 cell，含状态、错误和输出
+sca cell get 3
+echo 'L = 90' | sca cell put 3       # 替换 cell 代码并运行
+sca cell insert --after 3 -f new.py
+sca cell rm 4
+sca cell run [CELL ...]
+sca new bracket --kind part          # 新建 notebook，运行中的编辑器会列出它
+```
+
+这些命令通过运行中的编辑器工作（由 `<workspace>/.sca-editor/server.json` 找到）：页面实时显示修改，每次写入
+都会打印被改 cell 的状态、错误和输出。没有运行中的编辑器，或编辑器打开的是别的 notebook 时，`ls` 和 `get`
+读取文件，写命令会拒绝：这时直接编辑文件即可。
+
+skill（`editor-collaboration`）和 `landing.md` 已让 agent 按这种方式工作。
+
+完整列表见[更新日志](../../CHANGELOG.md)。
diff --git a/pyproject.toml b/pyproject.toml
index 461392f..19247c2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "simplecadapi"
-version = "2.2.2"
+version = "2.3.0"
 description = "A simplified OCP-native CAD modeling Python API"
 readme = "README.md"
 license = { file = "LICENSE" }
diff --git a/uv.lock b/uv.lock
index 6650fff..c1a2235 100644
--- a/uv.lock
+++ b/uv.lock
@@ -3227,7 +3227,7 @@ wheels = [
 
 [[package]]
 name = "simplecadapi"
-version = "2.2.2"
+version = "2.3.0"
 source = { editable = "." }
 dependencies = [
     { name = "cadquery-ocp" },