Guard final m98m99 staging paths

wasm-port/tests/browser/interp_smoke.html

@@ -8126,6 +8126,14 @@
         "m98m99/14-o-expression-call",
         "test.ngc",
       );
+      const m98m99FinalStagedNgcFiles = [
+        m98m99NamedProgramNamedPath,
+        m98m99NamedProgramNumberedPath,
+        m98m99OExpressionCallPath,
+      ].map((path) => path.replace("/work/browser-interp/m98m99/", ""));
+      if (m98m99FinalStagedNgcFiles.join(",") !== m98m99RegressionFiles.slice(21, 24).join(",")) {
+        throw new Error("browser_interp_m98m99_final_staging_manifest: list drift");
+      }
       const m98m99OExpressionCallRun = runWithCapturedPrints(() =>
         interp.runFile(m98m99OExpressionCallPath),
       );

wasm-port/tests/wasm/node/verify_interp_wasm.mjs

@@ -3022,6 +3022,17 @@ const m98m99OExpressionCallPath = writeInterpRegressionFile(
   "m98m99/14-o-expression-call",
   "test.ngc",
 );
+assert.deepEqual(
+  [
+    m98m99NamedProgramNamedPath,
+    m98m99NamedProgramNumberedPath,
+    m98m99OExpressionCallPath,
+  ],
+  m98m99RegressionFiles
+    .slice(21, 24)
+    .map((file) => `/work/interp/m98m99/${file}`),
+  "interp m98m99 final direct-file staging manifest drift",
+);
 const m98m99OExpressionCallRun = runWithCapturedPrints(() =>
   interp.runFile(m98m99OExpressionCallPath),
 );