Guard rotation staging paths

wasm-port/tests/browser/interp_smoke.html

@@ -7386,6 +7386,14 @@
       }
 
       const rotationG53Path = await writeInterpRegressionFile(interp, "rotation/g53", "g53.ngc");
+      const rotationStagedNgcFiles = [
+        rotationAbsPtsPath,
+        rotationG28Path,
+        rotationG53Path,
+      ].map((path) => path.replace("/work/browser-interp/rotation/", ""));
+      if (rotationStagedNgcFiles.join(",") !== rotationRegressionFiles.join(",")) {
+        throw new Error("browser_interp_rotation_staging_manifest: list drift");
+      }
       const rotationG53Output = interp.runFile(rotationG53Path);
       verifyExpectedOutput(
         "browser_interp_rotation_g53",

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

@@ -2344,6 +2344,15 @@ assert.match(
 );
 
 const rotationG53Path = writeInterpRegressionFile("rotation/g53", "g53.ngc");
+assert.deepEqual(
+  [
+    rotationAbsPtsPath,
+    rotationG28Path,
+    rotationG53Path,
+  ],
+  rotationRegressionFiles.map((file) => `/work/interp/rotation/${file}`),
+  "interp rotation staging manifest drift",
+);
 const rotationG53Output = interp.runFile(rotationG53Path);
 verifyExpectedOutput(
   "interp_rotation_g53_wasm",