fix: resolve cue FILE refs by basename against cue dir

src/main/services/emulators/extract-disc-sku.ts

@@ -54,7 +54,7 @@
   return sku;
 };
 
 const extractPs12Sku = async (filePath: string): Promise<string | null> => {
   const lower = filePath.toLowerCase();
   if (lower.endsWith(".chd")) {
     return extractChdSku(filePath);
@@ -72,6 +72,18 @@
     return null;
   }
 
+  const targetExists = await fs
+    .access(target)
+    .then(() => true)
+    .catch(() => false);
+  if (!targetExists) {
+    logger.warn("[extract-sku] sniff target missing on disk", {
+      filePath,
+      target,
+    });
+    return null;
+  }
+
   let fh: import("node:fs/promises").FileHandle | null = null;
   try {
     fh = await fs.open(target, "r");

src/main/services/emulators/sniff-disc-platform.ts

@@ -37,14 +37,35 @@
   }
 };
 
+const resolveCueRef = async (dir: string, ref: string): Promise<string> => {
+  const base = path.basename(ref.replace(/\\/g, "/"));
+  const resolved = path.resolve(dir, base);
+
+  try {
+    await fs.access(resolved);
+    return resolved;
+  } catch {
+    try {
+      const entries = await fs.readdir(dir);
+      const match = entries.find(
+        (entry) => entry.toLowerCase() === base.toLowerCase()
+      );
+      if (match) return path.resolve(dir, match);
+    } catch {
+      return resolved;
+    }
+    return resolved;
+  }
+};
+
 export const parseCueReferencedFiles = async (
   cuePath: string
 ): Promise<string[]> => {
   try {
     const content = await fs.readFile(cuePath, "utf-8");
     const dir = path.dirname(cuePath);
     const matches = [...content.matchAll(/FILE\s+"(.+?)"\s+\w+/gi)];
-    return matches.map((m) => path.resolve(dir, m[1]));
+    return Promise.all(matches.map((m) => resolveCueRef(dir, m[1])));
   } catch {
     return [];
   }