From 1b60bc2b2e7f424d461f5db6d5326da08cde6121 Mon Sep 17 00:00:00 2001
From: cnc <cnc@localhost>
Date: Fri, 5 Jun 2026 20:59:43 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8F=90=E7=A4=BA=E8=AF=8D=EF=BC=9A=E9=AA=8C?=
 =?UTF-8?q?=E8=AF=81=20OPFS=20=E7=A8=8B=E5=BA=8F=E8=B7=A8=E7=8B=AC?=
 =?UTF-8?q?=E7=AB=8B=E6=8C=82=E8=BD=BD=E6=81=A2=E5=A4=8D?=
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结论：新增浏览器 OPFS section，使用同一 workspace 但不同 WASM mount point 的新 simulator 解析已持久化程序，证明程序来自 OPFS 而非旧 WASM FS mirror。LinuxCNC 来源依据为 rs274ngc_pre.cc open()/read_text() 文件读取路径；未扩展 smoke 语义。检查通过：./test-native.sh；./test-linuxcnc-source-link.sh。
---
 ...-browser-wasm-smoke-opfs-basic-sections.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/web/test-browser-wasm-smoke-opfs-basic-sections.js b/web/test-browser-wasm-smoke-opfs-basic-sections.js
index 1ee4040..26852bf 100644
--- a/web/test-browser-wasm-smoke-opfs-basic-sections.js
+++ b/web/test-browser-wasm-smoke-opfs-basic-sections.js
@@ -125,4 +125,23 @@ export async function runBrowserOpfsBasicSections(context, simulator) {
         "LinuxCNC OPFS program file was not restored across WASM simulator instances");
     });
   });
+
+  await runSection("opfs program restore with independent mount", async () => {
+    await withSmokeSimulator(async (independentMountSimulator) => {
+      // LinuxCNC source basis: rs274ngc_pre.cc open()/read_text()
+      // reads the mirrored program file. A different mount point proves
+      // the program came from OPFS instead of a prior WASM FS mirror.
+      const independentMountEvents = await independentMountSimulator.parseFile(
+        "programs/browser-smoke.ngc",
+        "linuxcnc",
+        { backend: "linuxcnc-rs274" },
+      );
+      expectEvent(independentMountEvents, (event) => event.type === "rapid" && near(event.end.x, 1),
+        "LinuxCNC OPFS program file was not restored through an independent WASM mount");
+      const independentMountPath = independentMountSimulator.fs.opfs.resolvePath("programs/browser-smoke.ngc");
+      if (!independentMountPath.startsWith("/cnc-independent/")) {
+        throw new Error("independent OPFS mount point was not used for restored program parsing");
+      }
+    }, { mountPoint: "/cnc-independent", workspacePath: "cnc-simulator-smoke" });
+  });
 }