fix: update extractChaptersXml to save XML file next to original source and reflect changes in documentation

LocalFlowPlugins/utility/extractChaptersXml/1.0.0/index.js

@@ -8,7 +8,7 @@ const fs   = require('fs');
 const details = () => ({
   name: 'Extract Chapters to XML',
   description:
-    'Extracts MKV chapter markers to an XML file in workDir using mkvextract. '
+    'Extracts MKV chapter markers to an XML file next to the original source using mkvextract. '
     + 'Stores the output path in args.variables.chaptersXmlPath. '
     + 'Safe to run even if the source has no chapters.',
   style: { borderColor: '#9C27B0' },
@@ -28,8 +28,11 @@ const plugin = async (args) => {
   const { jobLog, inputFileObj, variables, workDir, updateWorker } = args;
 
   const inputFile = inputFileObj._id;
-  const baseName  = path.basename(inputFile, path.extname(inputFile));
-  const xmlPath   = path.join(workDir, `${baseName}_chapters.xml`);
+  // Keep sidecar files in the library when a prior plugin copied the media to workDir.
+  const originalFile = variables.originalLibraryFile || inputFile;
+  const targetDir    = variables.originalLibraryDir || path.dirname(originalFile);
+  const baseName     = path.basename(originalFile, path.extname(originalFile));
+  const xmlPath      = path.join(targetDir, `${baseName}_chapters.xml`);
 
   jobLog(`[extractChaptersXml] Source: ${inputFile}\n`);
   jobLog(`[extractChaptersXml] Output: ${xmlPath}\n`);