## ADDED Requirements

### Requirement: Bottom navigation grouping
The mobile bottom navigation SHALL support grouping related pages under a single navigation item that opens a sub-menu.

#### Scenario: Tools group navigation
- **WHEN** user views the mobile bottom navigation
- **THEN** a "Tools" item is visible that groups Tool Workshop and Config Profiles

#### Scenario: Opening grouped menu
- **WHEN** user taps a grouped navigation item
- **THEN** a bottom sheet or menu opens showing the grouped pages

#### Scenario: Active state for grouped items
- **WHEN** user is on a page within a group
- **THEN** the group's navigation item shows as active
