feat(command-bar): match priority highlight colors to UI

Priority keywords now show their actual UI colors:
- Dringend (urgent): red #ef4444
- Wichtig (high): orange #f97316
- Normal (medium): yellow #eab308
- Später (low): green #22c55e

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

services/mana-core-auth/src/settings/dto/index.ts

@@ -18,6 +18,10 @@ export class NavSettingsDto {
 	@IsOptional()
 	@IsBoolean()
 	sidebarCollapsed?: boolean;
+
+	@IsOptional()
+	@IsObject()
+	hiddenNavItems?: Record<string, string[]>;
 }
 
 // Theme settings
@@ -70,6 +74,7 @@ export class UpdateAppOverrideDto {
 export interface NavSettings {
 	desktopPosition: 'top' | 'bottom';
 	sidebarCollapsed: boolean;
+	hiddenNavItems?: Record<string, string[]>;
 }
 
 export interface ThemeSettings {