Guard browser OPFS machine file readback helper

text7.txt

@@ -2683,3 +2683,58 @@ guard，不改变 LinuxCNC-owned interpreter、INI、tool、parameter 或 runtim
 ```bash
 git status --short && git log -5 --oneline && tail -n 120 text7.txt && awk '/^[一二三四五六七八九十百]+、/ {print}' text7.txt | sort | uniq -d
 ```
+
+四十六、2026-06-14 继续执行记录：browser OPFS machine file readback helper guard
+
+1. 本批目标。
+
+继续 staged path guard inventory 第四十一轮，收敛 OPFS saved machine-file readback
+的重复 `loadMachineTextFiles(...)` + `verifyExpectedOutput(...)` 形态。
+
+2. 已完成改动。
+
+- browser smoke 新增 `verifyOpfsMachineFileReadback(...)`；
+- ordinary session saved parameter text readback 改为走 helper；
+- ordinary session saved tool-table text readback 改为走 helper；
+- random toolchanger saved tool-table text readback 改为走 helper；
+- custom session 的 direct OPFS readback 仍保留 `verifyOpfsReadback(...)`；
+- 未修改 OPFS bridge behavior、file-service、path-model、SDK planner、interpreter 或
+  LinuxCNC-owned runtime semantics。
+
+涉及文件：
+
+```text
+wasm-port/tests/browser/interp_smoke.html
+```
+
+3. 已完成验证。
+
+```bash
+git diff --check
+SKIP_INI_BUILD=1 SKIP_INTERP_BUILD=1 wasm-port/tests/browser/verify_interp_browser.sh
+wasm-port/tools/verify_vendor_sync.sh
+wasm-port/tools/verify_no_standalone_cnc_semantics.sh
+SKIP_INTERP_BUILD=1 wasm-port/tests/wasm/node/verify_interp_wasm.sh
+SKIP_INTERP_BUILD=1 wasm-port/tests/wasm/node/verify_sim_configs_inventory_wasm.sh
+wasm-port/tests/host/verify_host_smokes.sh
+```
+
+提交建议：
+
+```text
+Guard browser OPFS machine file readback helper
+```
+
+4. 下一步工作建议。
+
+继续 staged path guard inventory 第四十二轮，优先扫描 OPFS saved parameter/tool-table
+readback expected text 是否还存在可安全收敛的 fixture text helper；如果收益不明显，
+转向 OPFS save result `verifyExpectedOutput(...)` 的重复 result verification 小批收敛；
+仍只加 browser/OPFS boundary guard，不改变 LinuxCNC-owned interpreter、INI、tool、
+parameter 或 runtime semantics。
+
+下一轮第一条命令仍保持：
+
+```bash
+git status --short && git log -5 --oneline && tail -n 120 text7.txt && awk '/^[一二三四五六七八九十百]+、/ {print}' text7.txt | sort | uniq -d
+```

wasm-port/tests/browser/interp_smoke.html

@@ -4539,6 +4539,11 @@
       verifyExpectedOutput(label, await loadTextFile(opfsPath), expectedText);
     }
 
+    async function verifyOpfsMachineFileReadback(label, machineId, fileKey, expectedText) {
+      const machineFiles = await loadMachineTextFiles(machineId);
+      verifyExpectedOutput(label, machineFiles[fileKey], expectedText);
+    }
+
     async function writeOpfsMachineFile(machineId, filename, text) {
       const opfsPath = opfsMachineFilePath(machineId, filename);
       await saveTextFile(opfsPath, text);
@@ -9237,10 +9242,10 @@
           "parameter_5399=66.6",
         ].join("\n"),
       );
-      const machineFiles = await loadMachineTextFiles(browserInterpMachineId);
-      verifyExpectedOutput(
+      await verifyOpfsMachineFileReadback(
         "opfs_saved_parameter_text",
-        machineFiles.parameters,
+        browserInterpMachineId,
+        "parameters",
         [
           "5161\t12.340000",
           "5162\t56.780000",
@@ -9281,10 +9286,10 @@
           "tool_1.pocketno=7",
         ].join("\n"),
       );
-      const savedMachineFiles = await loadMachineTextFiles(browserInterpMachineId);
-      verifyExpectedOutput(
+      await verifyOpfsMachineFileReadback(
         "opfs_saved_tool_table_text",
-        savedMachineFiles.toolTable,
+        browserInterpMachineId,
+        "toolTable",
         [
           "T2",
           "P7",
@@ -9391,12 +9396,10 @@
           "tool_pocket_9.toolno=5",
         ].join("\n"),
       );
-      const savedRandomMachineFiles = await loadMachineTextFiles(
-        browserRandomMachineId,
-      );
-      verifyExpectedOutput(
+      await verifyOpfsMachineFileReadback(
         "opfs_saved_random_tool_table_text",
-        savedRandomMachineFiles.toolTable,
+        browserRandomMachineId,
+        "toolTable",
         [
           "T2",
           "P7",