推进 INI 面板 G-code 回退来源 guard

wasm-port/runtime/ui/ini-panel/app.js

@@ -323,9 +323,11 @@ function gcodeFilenameFromSnapshotPath(path) {
 async function loadSelectedGcodeProgram() {
   const opfsPath = restoredSessionSnapshot?.payload?.files?.gcode;
   const filename = gcodeFilenameFromSnapshotPath(opfsPath);
+  const hasSnapshotGcode = typeof opfsPath === "string" && opfsPath.startsWith("linuxcnc/gcode/");
   return {
     filename,
     opfsPath: opfsPath ?? `linuxcnc/gcode/${filename}`,
+    source: hasSnapshotGcode ? "snapshot" : "default",
     wasmPath: GCODE_WASM_FILE,
     text: await loadGcodeProgram(filename),
   };
@@ -593,6 +595,7 @@ document.getElementById("run-gcode").addEventListener("click", async () => {
       [
         "Ran G-code through LinuxCNC interpreter WASM.",
         `Program: ${program.opfsPath} -> ${program.wasmPath}`,
+        `Program source: ${program.source}`,
         `INI: ${loadedSession.ini.wasmPath}`,
         result.trim(),
       ].join("\n"),