## MODIFIED Requirements

### Requirement: Chat page is default route

The chat page SHALL be routed at `/sales-assistant` (or `/` with redirect). The page content SHALL be wrapped in a MudTabs container with the conversation UI in the first tab panel.

#### Scenario: Page loads with chat tab active

- **WHEN** the user navigates to the chat page
- **THEN** the Chat tab is active showing the message list and input area

#### Scenario: Chat functionality unchanged

- **WHEN** the user sends a message from the Chat tab
- **THEN** the assistant response streams in exactly as before, with the same SSE contract and rendering behavior