# Story: The Agent Brain (Ollama Integration)

## User Story
**As a** User
**I want to** connect the Assistant to a local Ollama instance
**So that** I can chat with the Agent and have it execute tools without sending data to the cloud.

## Acceptance Criteria
*   [ ] Backend: Implement `ModelProvider` trait/interface.
*   [ ] Backend: Implement `OllamaProvider` (POST /api/chat).
*   [ ] Backend: Implement `chat(message, history, provider_config)` command.
    *   [ ] Must support passing Tool Definitions to Ollama (if model supports it) or System Prompt instructions.
    *   [ ] Must parse Tool Calls from the response.
*   [ ] Frontend: Settings Screen to toggle "Ollama" and set Model Name (default: `llama3`).
*   [ ] Frontend: Chat Interface.
    *   [ ] Message History (User/Assistant).
    *   [ ] Tool Call visualization (e.g., "Running git status...").

## Out of Scope
*   Remote Providers (Anthropic/OpenAI) - Future Story.
*   Streaming responses (wait for full completion for MVP).
*   Complex context window management (just send full history for now).