## ADDED Requirements

### Requirement: Dashboard provides responsive layout
The system SHALL provide a consistent layout with header, navigation, and content area.

#### Scenario: Layout structure
- **WHEN** the user views any authenticated page
- **THEN** a header displays the application name and user avatar
- **AND** a sidebar shows navigation links (Dashboard, Projects, Repositories, Tools, Settings)
- **AND** the main content area renders the current route's component

#### Scenario: Collapsible sidebar
- **WHEN** the user is on a mobile device
- **THEN** the sidebar is initially collapsed
- **AND** a hamburger menu toggles the sidebar visibility

### Requirement: Navigation reflects auth state
The system SHALL show/hide navigation items based on authentication status.

#### Scenario: Authenticated navigation
- **WHEN** the user is authenticated
- **THEN** all navigation links are visible
- **AND** "Sign Out" is available in the user menu

#### Scenario: Unauthenticated navigation
- **WHEN** the user is not authenticated
- **THEN** only "Sign In" is shown
- **AND** accessing protected routes redirects to login