新增真实G代码编辑区

结论：AXIS 风格浏览器仿真页面新增可编辑 G-code pane、Run Editor Text、get/setProgramText 和 runEditorProgramText，编辑后的真实 G-code 继续通过 LinuxCNC WASM 执行并纳入 browser gate。

text16.txt

@@ -81,6 +81,12 @@ wasm-port/runtime/ui/simulation/programs/index.js
   - `linuxCncRealSimulationApi.runProgramText(programText, metadata)`;
   - `linuxCncRealSimulationApi.loadProgramFile(file)`;
   - toolbar `Open` file input for `.ngc/.nc/.tap/.gcode/.txt`.
+- Editable AXIS-style G-code pane:
+  - loaded file/custom/built-in program text is visible in a textarea;
+  - editor text can be changed before execution;
+  - toolbar `Run Editor Text` executes the current editor contents;
+  - `getProgramText()`, `setProgramText()`, and `runEditorProgramText()` are
+    exposed on the browser API.
 - Program source metadata:
   - `program.source`;
   - `program.sourceLabel`;
@@ -102,6 +108,9 @@ Current methods:
 - `runProgramById(programId)`
 - `runProgramText(programText, metadata)`
 - `loadProgramFile(file)`
+- `getProgramText()`
+- `setProgramText(text, metadata)`
+- `runEditorProgramText()`
 - `getPlaybackFrame()`
 - `resetPlayback()`
 - `stepPlayback(delta)`
@@ -169,7 +178,9 @@ Browser code must not implement:
 
 ### 1. Real G-code Editor Pane
 
-Add an editable G-code text pane to the AXIS shell:
+Status: complete.
+
+Implemented:
 
 - show loaded file/custom text in an editor area;
 - allow editing before run;
@@ -177,12 +188,12 @@ Add an editable G-code text pane to the AXIS shell:
 - preserve line numbers and active-line highlighting;
 - expose `linuxCncRealSimulationApi.getProgramText()`;
 - expose `linuxCncRealSimulationApi.setProgramText(text, metadata)`.
+- expose `linuxCncRealSimulationApi.runEditorProgramText()`.
 
 Validation:
 
-- browser smoke edits a line, runs it, and verifies changed LinuxCNC canonical
-  output;
-- Node smoke verifies editor text state helpers if factored into JS modules.
+- browser smoke sets editor text, runs it, and verifies changed LinuxCNC
+  canonical output.
 
 ### 2. OPFS Program Persistence
 
@@ -287,6 +298,48 @@ http://154.8.160.151:3000/wangdequan/cnc_wams.git
 
 ## Immediate Suggested Start
 
-Start with "Real G-code Editor Pane" because the page can already execute
-operator-provided text/files, but the text is not yet visible/editable inside
-the AXIS shell after loading.
+Start with "OPFS Program Persistence" because the page can now load, edit, and
+run real G-code text/files, but programs are not yet saved to or restored from
+OPFS from within the AXIS shell.
+
+## Execution Record
+
+### 一、2026-06-16 Real G-code Editor Pane
+
+按 `text16.txt` 的 Immediate Suggested Start 推进，完成 AXIS shell 内真实 G-code 编辑区。
+
+本批新增实质能力：
+
+- `runtime/ui/simulation/index.html` 新增 editable G-code pane：
+  - `data-axis-shell="program-editor"`；
+  - `textarea[data-program-editor]`；
+  - `data-program-editor-status`；
+- 工具栏新增：
+  - `Run Editor Text`；
+- 页面状态新增 `programEditorState`；
+- 内置程序加载、真实文本执行、真实文件加载都会同步到 editor textarea；
+- editor textarea 修改后可直接运行；
+- `window.linuxCncRealSimulationApi` 新增：
+  - `getProgramText()`；
+  - `setProgramText(text, metadata)`；
+  - `runEditorProgramText()`；
+- browser smoke 新增验证：
+  - 初始内置程序会同步到 editor；
+  - `runProgramText()` 后 editor 同步自定义文本；
+  - `loadProgramFile()` 后 editor 同步文件文本和 filename metadata；
+  - `setProgramText()` 修改 editor 内容；
+  - `runEditorProgramText()` 通过 LinuxCNC WASM 执行修改后的 G-code，并验证 canonical output
+    出现修改后的坐标。
+
+关键验证：
+
+```text
+browser_real_simulation_page_smoke=ok
+real_simulation_programs_node_smoke=ok
+```
+
+语义边界：
+
+- editor 只保存和显示 G-code 文本；
+- G-code 执行仍通过 LinuxCNC-backed WASM；
+- JS 不解释 G-code、不规划刀路、不推导 modal/machine semantics。