feat: add AppLayout, BrandLogo, ProfileMenu, and RouteBadge components

- Implemented AppLayout component for application shell with navigation and sidebar.
- Created BrandLogo component to display the application logo.
- Developed ProfileMenu component for user profile management with dropdown functionality.
- Added RouteBadge component to visually represent route numbers with color coding.

style: add CSS styles for Dashboard and Routes pages

- Introduced Dashboard.css for styling the dashboard layout and components.
- Created RoutesPage.css for styling the routes page, including filters and table layout.
- Added SchedulesPage.css for styling the schedules layout and route options.

.gitignore

@@ -38,6 +38,9 @@ redis_data/
 # SSL certificates
 nginx/ssl/
 
+# Runtime secrets
+secrets/
+
 # Temp files
 *.tmp
 .cache/