ChatMessage

import marimo as mo

# Create a user message
message = mo.ai.ChatMessage(
    role="user",
    content="Hello, how are you?",
    id="msg-1"
)

# Create an assistant message with parts
message = mo.ai.ChatMessage(
    role="assistant",
    content="I'm doing well, thank you!",
    id="msg-2",
    parts=[
        {"type": "text", "text": "I'm doing well, thank you!"}
    ]
)

# Create a message with attachments
attachment = mo.ai.ChatAttachment(
    url="https://example.com/image.png",
    name="example.png"
)

message = mo.ai.ChatMessage(
    role="user",
    content="Look at this image",
    id="msg-3",
    attachments=[attachment]
)

mo.ai.ChatMessage(
    role: Literal["user", "assistant", "system"],
    content: Any,
    id: str = "",
    parts: list[ChatPart] = [],
    attachments: Optional[list[ChatAttachment]] = None,
    metadata: Any | None = None
)