Guard more interp staging paths

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

@@ -1579,6 +1579,21 @@ verifyExpectedOutput(
 );
 
 const flowsnakePath = writeInterpRegressionFile("flowsnake", "flowsnake.ngc");
+const flowsnakeNgcFiles = [
+  "flowsnake.ngc",
+];
+assert.deepEqual(
+  flowsnakeNgcFiles,
+  interpRegressionNgcFilesRecursive("flowsnake"),
+  "interp flowsnake fixture coverage drift",
+);
+assert.deepEqual(
+  [
+    flowsnakePath,
+  ],
+  flowsnakeNgcFiles.map((file) => `/work/interp/flowsnake/${file}`),
+  "interp flowsnake staging manifest drift",
+);
 verifyExpectedOutput(
   "interp_flowsnake_wasm",
   interp.runFile(flowsnakePath),
@@ -1601,6 +1616,21 @@ verifyExpectedOutput(
 );
 
 const insideCornersPath = writeInterpRegressionFile("inside-corners", "test.ngc");
+const insideCornersNgcFiles = [
+  "test.ngc",
+];
+assert.deepEqual(
+  insideCornersNgcFiles,
+  interpRegressionNgcFilesRecursive("inside-corners"),
+  "interp inside-corners fixture coverage drift",
+);
+assert.deepEqual(
+  [
+    insideCornersPath,
+  ],
+  insideCornersNgcFiles.map((file) => `/work/interp/inside-corners/${file}`),
+  "interp inside-corners staging manifest drift",
+);
 verifyExpectedOutput(
   "interp_inside_corners_wasm",
   interp.runFile(insideCornersPath),
@@ -1627,6 +1657,21 @@ const inverseTimeWithCompPath = writeInterpRegressionFile(
   "inverse-time-with-comp",
   "inverse.ngc",
 );
+const inverseTimeWithCompNgcFiles = [
+  "inverse.ngc",
+];
+assert.deepEqual(
+  inverseTimeWithCompNgcFiles,
+  interpRegressionNgcFilesRecursive("inverse-time-with-comp"),
+  "interp inverse-time-with-comp fixture coverage drift",
+);
+assert.deepEqual(
+  [
+    inverseTimeWithCompPath,
+  ],
+  inverseTimeWithCompNgcFiles.map((file) => `/work/interp/inverse-time-with-comp/${file}`),
+  "interp inverse-time-with-comp staging manifest drift",
+);
 verifyExpectedOutput(
   "interp_inverse_time_with_comp_wasm",
   interp.runFile(inverseTimeWithCompPath),