Fix lint, type check errors, and apply CodeRabbit review feedback

- Remove trailing comma in SUPPORTED_LOCALES that caused Locale type to
  include undefined, fixing all downstream type errors
- Remove unused webcamSizePreset from useMemo dependency array
- Use parsed.toString() instead of raw url in shell.openExternal per
  Electron security best practice

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

electron/ipc/handlers.ts

@@ -645,7 +645,7 @@ export function registerIpcHandlers(
 				return { success: false, error: `Unsupported URL scheme: ${parsed.protocol}` };
 			}
 
-			await shell.openExternal(url);
+			await shell.openExternal(parsed.toString());
 			return { success: true };
 		} catch (error) {
 			console.error("Failed to open URL:", error);

src/components/video-editor/VideoEditor.tsx

@@ -484,7 +484,6 @@ export default function VideoEditor() {
 			aspectRatio,
 			webcamLayoutPreset,
 			webcamMaskShape,
-			webcamSizePreset,
 			webcamPosition,
 			exportQuality,
 			exportFormat,

src/i18n/config.ts

@@ -1,5 +1,5 @@
 export const DEFAULT_LOCALE = "en" as const;
-export const SUPPORTED_LOCALES = ["en", "zh-CN", "es", , "fr", "tr"] as const;
+export const SUPPORTED_LOCALES = ["en", "zh-CN", "es", "fr", "tr"] as const;
 export const I18N_NAMESPACES = [
 	"common",
 	"dialogs",