## MODIFIED Requirements

### Requirement: Message display

The chat page SHALL display messages in a vertically scrolling list, with each message showing the sender role (user or assistant), the message content, and a visual distinction between user and assistant messages (e.g., alignment, color, or avatar). Assistant messages SHALL render content as formatted HTML converted from markdown; user messages SHALL display as plain text.

#### Scenario: User message displayed

- **WHEN** the user sends a message
- **THEN** the message appears in the message list aligned or styled to indicate it is from the user, rendered as plain text

#### Scenario: Assistant message displayed

- **WHEN** the assistant responds
- **THEN** the response appears in the message list with distinct styling from user messages, with markdown content rendered as formatted HTML

#### Scenario: Message ordering

- **WHEN** multiple messages exist in the conversation
- **THEN** messages are displayed in chronological order, oldest at top