Everything sent to the LLM in a single request: system prompt, conversation history, and available tools.

Inference parameters (temperature, max_tokens, etc.) are NOT stored here — they are passed as keyword options at the Planck.AI.stream/3 or Planck.AI.complete/3 call site and forwarded directly to req_llm.

Examples

iex> %Planck.AI.Context{
...>   system: "You are a helpful coding assistant.",
...>   messages: [
...>     %Planck.AI.Message{role: :user, content: [{:text, "Hello"}]}
...>   ],
...>   tools: []
...> }