feat(server): set up option to toggle background effects

src/routes/api/options.ts

@@ -68,6 +68,7 @@ const ALLOWED_OPTIONS = new Set([
     'firstDayOfWeek',
     'textNoteEditorType',
     'layoutOrientation',
+    'backgroundEffects',
     'allowedHtmlTags' // Allow configuring HTML import tags
 ]);
 

src/routes/index.ts

@@ -37,7 +37,7 @@ function index(req: Request, res: Response) {
         platform: process.platform,
         isElectron,
         hasNativeTitleBar: (isElectron && options.nativeTitleBarVisible === "true"),
-        hasBackgroundEffects: (isElectron && true),
+        hasBackgroundEffects: (isElectron && options.backgroundEffects === "true"),
         mainFontSize: parseInt(options.mainFontSize),
         treeFontSize: parseInt(options.treeFontSize),
         detailFontSize: parseInt(options.detailFontSize),

src/services/options_init.ts

@@ -137,6 +137,7 @@ const defaultOptions: DefaultOption[] = [
 
     // HTML import configuration
     { name: "layoutOrientation", value: "vertical", isSynced: false },
+    { name: "backgroundEffects", value: "false", isSynced: false },
     { name: "allowedHtmlTags", value: JSON.stringify([
         'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'blockquote', 'p', 'a', 'ul', 'ol',
         'li', 'b', 'i', 'strong', 'em', 'strike', 's', 'del', 'abbr', 'code', 'hr', 'br', 'div',