Guard OPFS gcode program staging

wasm-port/tests/opfs/node/verify_file_service.mjs

@@ -95,14 +95,25 @@ const storage = {
   getDirectory: async () => root,
 };
 
+function assertGcodeProgramStoragePath(filename, path) {
+  assert.equal(
+    path,
+    `linuxcnc/gcode/${filename}`,
+    `${filename} G-code OPFS path drift`,
+  );
+}
+
 assert.equal(await getOpfsRoot(storage), root);
 
 assert.equal(normalizeOpfsPath("linuxcnc/machines/xyzab.ini"), "linuxcnc/machines/xyzab.ini");
 assert.equal(machineIniPath("xyzab-tdr"), "linuxcnc/machines/xyzab-tdr/machine.ini");
 assert.equal(toolTablePath("xyzab-tdr"), "linuxcnc/machines/xyzab-tdr/tool.tbl");
 assert.equal(parameterFilePath("xyzab-tdr"), "linuxcnc/machines/xyzab-tdr/linuxcnc.var");
-assert.equal(gcodeProgramPath("fixture.ngc"), "linuxcnc/gcode/fixture.ngc");
-assert.equal(gcodeProgramPath("custom-fixture.ngc"), "linuxcnc/gcode/custom-fixture.ngc");
+assertGcodeProgramStoragePath("fixture.ngc", gcodeProgramPath("fixture.ngc"));
+assertGcodeProgramStoragePath(
+  "custom-fixture.ngc",
+  gcodeProgramPath("custom-fixture.ngc"),
+);
 assert.equal(previewCachePath("fixture"), "linuxcnc/preview-cache/fixture/preview.json");
 assert.equal(sessionSnapshotPath("session-1"), "linuxcnc/sessions/session-1/snapshot.json");
 assert.equal(
@@ -200,14 +211,14 @@ assert.deepEqual(await loadMachineTextFiles("xyzab-tdr", { storage }), {
   toolTable: "T0 P0 ; no tool\nT2 P2 Z1.25 D0.25\n",
   parameters: "5161 0.0\n5162 0.0\n",
 });
-assert.equal(
+assertGcodeProgramStoragePath(
+  "fixture.ngc",
   await saveGcodeProgram("fixture.ngc", "G0 X0 Y0\nM2\n", { storage }),
-  "linuxcnc/gcode/fixture.ngc",
 );
 assert.equal(await loadGcodeProgram("fixture.ngc", { storage }), "G0 X0 Y0\nM2\n");
-assert.equal(
+assertGcodeProgramStoragePath(
+  "custom-fixture.ngc",
   await saveGcodeProgram("custom-fixture.ngc", "G1 X1 F10\nM2\n", { storage }),
-  "linuxcnc/gcode/custom-fixture.ngc",
 );
 assert.equal(await loadGcodeProgram("custom-fixture.ngc", { storage }), "G1 X1 F10\nM2\n");