feat: establish nightdrive visual foundation

scripts/build-contract.mjs

@@ -73,7 +73,25 @@ export const resolveViteAssetClosure = (manifest) => {
   };
   visit('index.html', true);
 
-  const unreachable = Object.keys(manifest).filter((key) => !allReachable.has(key));
+  const reachableAssetFiles = new Set(
+    [...allReachable].flatMap((key) => manifest[key].assets ?? []),
+  );
+  const emittedAssetRecords = new Set(
+    Object.entries(manifest).flatMap(([key, record]) => {
+      const isEmittedAssetRecord =
+        reachableAssetFiles.has(record.file) &&
+        record.isEntry === undefined &&
+        record.isDynamicEntry === undefined &&
+        (record.imports?.length ?? 0) === 0 &&
+        (record.dynamicImports?.length ?? 0) === 0 &&
+        (record.css?.length ?? 0) === 0 &&
+        (record.assets?.length ?? 0) === 0;
+      return isEmittedAssetRecord ? [key] : [];
+    }),
+  );
+  const unreachable = Object.keys(manifest).filter(
+    (key) => !allReachable.has(key) && !emittedAssetRecords.has(key),
+  );
   if (unreachable.length > 0) throw new Error(`Unreachable manifest record: ${unreachable.join(', ')}`);
 
   const executableModules = [];