fix: optimize subtitle extraction with mkvextract batch mode, fix copyToWorkDir skip logic, target original library dir

LocalFlowPlugins/utility/copyToWorkDir/1.0.0/index.js

@@ -68,19 +68,17 @@ const plugin = async (args) => {
   jobLog(`[copyToWorkDir] Source : ${inputFile}\n`);
   jobLog(`[copyToWorkDir] WorkDir: ${workDir}\n`);
 
-  // ── Optional: skip if source is already local ─────────────────────────────
+  // ── Skip only if file is already located inside workDir ──────────────────
   const skipIfLocal = (args.inputs.skipIfLocal || 'true') === 'true';
-  if (skipIfLocal) {
-    const srcDrive   = inputFile.split(/[/\\]/)[0].toUpperCase();   // e.g. "T:"
-    const workDrive  = workDir.split(/[/\\]/)[0].toUpperCase();     // e.g. "T:"
-    const alreadyLocal = (
-      inputFile.startsWith(workDir)
-      || (srcDrive && workDrive && srcDrive === workDrive)
-    );
-    if (alreadyLocal) {
-      jobLog(`[copyToWorkDir] Source is already local (same drive: ${srcDrive}) — skipping copy.\n`);
-      return { outputNumber: 1, outputFileObj: inputFileObj, variables };
-    }
+  if (skipIfLocal && inputFile.startsWith(workDir)) {
+    jobLog('[copyToWorkDir] Source file is already inside workDir — skipping copy.\n');
+    return { outputNumber: 1, outputFileObj: inputFileObj, variables };
+  }
+
+  // ── Preserve original library paths for downstream plugins ──────────────
+  if (!variables.originalLibraryFile) {
+    variables.originalLibraryFile = inputFile;
+    variables.originalLibraryDir  = path.dirname(inputFile);
   }
 
   // ── Copy using streams (no RAM spike for large files) ────────────────────