Guard browser OPFS INI staging

wasm-port/tests/browser/interp_smoke.html

@@ -4469,6 +4469,15 @@
       }
     }
 
+    function assertOpfsIniStaging(label, iniFile, expectedOpfsPath, expectedWasmPath) {
+      if (iniFile.opfsPath !== expectedOpfsPath) {
+        throw new Error(`${label}: unexpected INI OPFS path ${iniFile.opfsPath}`);
+      }
+      if (iniFile.wasmPath !== expectedWasmPath) {
+        throw new Error(`${label}: unexpected INI WASM path ${iniFile.wasmPath}`);
+      }
+    }
+
     function generatedToolTablePath(wasmPath, expectedWasmPath) {
       if (wasmPath !== expectedWasmPath) {
         throw new Error(`browser_tool_table_fixture_${expectedWasmPath}: path drift`);
@@ -8994,6 +9003,12 @@
           toolTableWasmPath: "/work/browser-tool.tbl",
         },
       );
+      assertOpfsIniStaging(
+        "opfs_load_ini_staging",
+        loadedSession.ini,
+        "linuxcnc/machines/browser-interp/machine.ini",
+        "/work/browser-machine.ini",
+      );
       assertOpfsToolTableStaging(
         "opfs_load_tool_table_staging",
         loadedSession.toolTable,
@@ -9155,6 +9170,12 @@
           toolTableWasmPath: "/work/browser-random-tool.tbl",
         },
       );
+      assertOpfsIniStaging(
+        "opfs_load_random_ini_staging",
+        loadedRandomSession.ini,
+        "linuxcnc/machines/browser-random-toolchanger/machine.ini",
+        "/work/browser-random-machine.ini",
+      );
       assertOpfsToolTableStaging(
         "opfs_load_random_tool_table_staging",
         loadedRandomSession.toolTable,
@@ -9260,6 +9281,12 @@
           toolTableWasmPath: "/work/browser-custom-tool.tbl",
         },
       );
+      assertOpfsIniStaging(
+        "opfs_load_ini_named_ini_staging",
+        loadedIniFileSession.ini,
+        "linuxcnc/machines/browser-ini-file-session/machine.ini",
+        "/work/browser-ini-file-session.ini",
+      );
       assertOpfsToolTableStaging(
         "opfs_load_ini_named_tool_table_staging",
         loadedIniFileSession.toolTable,
@@ -9423,6 +9450,12 @@
           toolTableWasmPath: "/work/browser-explicit-tool.tbl",
         },
       );
+      assertOpfsIniStaging(
+        "opfs_load_explicit_ini_staging",
+        loadedIniOverrideSession.ini,
+        "linuxcnc/machines/browser-ini-override-session/machine.ini",
+        "/work/browser-ini-override-session.ini",
+      );
       assertOpfsToolTableStaging(
         "opfs_load_explicit_tool_table_staging",
         loadedIniOverrideSession.toolTable,