Fix DVD extraction path error on Windows root drives, bump to 0.9.3

Path::file_name() returns None for Windows root paths like "D:\",
causing the full path (including colon) to be embedded in the temp
filename. Strip illegal characters in both the Rust worker and Dart UI.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: StuartCameronCode

app/lib/viewmodels/main_viewmodel.dart

@@ -1223,10 +1223,12 @@ class MainViewModel extends ChangeNotifier {
     int? startChapter,
     int? endChapter,
   }) async {
-    // Create temp file for the extraction
+    // Create temp file for the extraction.
+    // Sanitize volume label to remove characters illegal in filenames (e.g., ":" from "D:\").
+    final safeLabel = dvdInfo.volumeLabel.replaceAll(RegExp(r'[\\/:*?"<>|]'), '_');
     final tempDir = Directory.systemTemp;
     final tempFile = File(
-      '${tempDir.path}/vapourbox_dvd_${dvdInfo.volumeLabel}_t${titleIndex}_${DateTime.now().millisecondsSinceEpoch}.mpg',
+      '${tempDir.path}/vapourbox_dvd_${safeLabel}_t${titleIndex}_${DateTime.now().millisecondsSinceEpoch}.mpg',
     );
 
     final dvdSourceInfo = DvdSourceInfo(

app/macos/Runner/Info.plist

@@ -17,9 +17,9 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.9.2</string>
+	<string>0.9.3</string>
 	<key>CFBundleVersion</key>
-	<string>0.9.2</string>
+	<string>0.9.3</string>
 	<key>LSMinimumSystemVersion</key>
 	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
 	<key>NSHumanReadableCopyright</key>

app/pubspec.yaml

@@ -1,7 +1,7 @@
 name: vapourbox
 description: "Video processing and cleanup powered by VapourSynth"
 publish_to: 'none'
-version: 0.9.2+18
+version: 0.9.3+19
 
 environment:
   sdk: ^3.6.2

app/windows/runner/Runner.rc

@@ -73,8 +73,8 @@ IDI_APP_ICON            ICON                    "resources\\app_icon.ico"
 #endif
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 0,9,2,0
- PRODUCTVERSION 0,9,2,0
+ FILEVERSION 0,9,3,0
+ PRODUCTVERSION 0,9,3,0
  FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
 #ifdef _DEBUG
  FILEFLAGS VS_FF_DEBUG

worker/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "vapourbox-worker"
-version = "0.9.2"
+version = "0.9.3"
 edition = "2021"
 description = "Video processing worker using VapourSynth"
 authors = ["Stuart Cameron"]

worker/src/dvd_reader.rs

@@ -286,11 +286,18 @@ fn find_ifo_file(video_ts_dir: &Path, filename: &str) -> Result<PathBuf> {
 pub fn enumerate_titles(device_path: &str) -> Result<DvdInfo> {
     let video_ts_dir = find_video_ts_dir(device_path)?;
 
-    // Derive volume label from path
+    // Derive volume label from path.
+    // On Windows, Path::file_name() returns None for root paths like "D:\",
+    // so fall back to the drive letter (strip trailing `:\`).
     let volume_label = Path::new(device_path)
         .file_name()
         .map(|n| n.to_string_lossy().to_string())
-        .unwrap_or_else(|| device_path.to_string());
+        .unwrap_or_else(|| {
+            device_path
+                .trim_end_matches(['\\', '/'])
+                .trim_end_matches(':')
+                .to_string()
+        });
 
     // Read VIDEO_TS.IFO
     let vmg_ifo_path = find_ifo_file(&video_ts_dir, "VIDEO_TS.IFO")?;