Release v1.7.18

When the app restarts (or updates) while downloads are in progress,
partial files remain on disk but reservedTargetPaths (in-memory) is empty.
claimTargetPath treated the unclaimed-but-existing file as a conflict and
appended (1) to the filename, breaking RAR split archive extraction.

Fix: if a file exists on disk but no other item has reserved the path,
allow overwriting instead of creating a duplicate.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "real-debrid-downloader",
-  "version": "1.7.17",
+  "version": "1.7.18",
   "description": "Desktop downloader",
   "main": "build/main/main/main.js",
   "author": "Sucukdeluxe",

src/main/download-manager.ts

@@ -3942,7 +3942,10 @@ export class DownloadManager extends EventEmitter {
       const owner = this.reservedTargetPaths.get(key);
       const existsOnDisk = fs.existsSync(candidate);
       const allowExistingCandidate = allowExistingFile && index === 0;
-      if ((!owner || owner === itemId) && (owner === itemId || !existsOnDisk || allowExistingCandidate)) {
+      // If file exists on disk but no other item has reserved this path, allow overwrite.
+      // This prevents "(1)" suffixes after app restart when partial downloads remain on disk.
+      const unclaimedOnDisk = existsOnDisk && !owner && index === 0;
+      if ((!owner || owner === itemId) && (owner === itemId || !existsOnDisk || allowExistingCandidate || unclaimedOnDisk)) {
         this.reservedTargetPaths.set(key, itemId);
         this.claimedTargetPathByItem.set(itemId, candidate);
         return candidate;