推进 INI 面板状态 report JSON 导出 helper

wasm-port/tests/browser/ini_panel_smoke.html

@@ -743,6 +743,32 @@ TOOL_TABLE = browser-tool.tbl
         2,
         "UI machine session state report motion snapshot count",
       );
+      const machineSessionStateReportExport = uiDocument.defaultView.getMachineSessionStateReportExport();
+      assertEqual(
+        machineSessionStateReportExport.filename,
+        "machine-session-state-report.json",
+        "UI machine session state report export filename",
+      );
+      assertEqual(
+        machineSessionStateReportExport.mediaType,
+        "application/json",
+        "UI machine session state report export media type",
+      );
+      assertEqual(
+        machineSessionStateReportExport.text.endsWith("\n"),
+        true,
+        "UI machine session state report export newline",
+      );
+      assertEqual(
+        JSON.parse(machineSessionStateReportExport.text).run.canonicalEventCount,
+        2,
+        "UI machine session state report export canonical event count",
+      );
+      assertEqual(
+        JSON.parse(machineSessionStateReportExport.text).program.source,
+        "snapshot",
+        "UI machine session state report export program source",
+      );
       if (
         !runLog.includes("canon_event=STRAIGHT_TRAVERSE") ||
         !runLog.includes("canon_event=STRAIGHT_FEED")