FR-6: Settings UI

Provides a graphical interface (tray or window) for user configuration.

Requirement

1. Expose configuration for:
   • Global hot-key picker
   • Model selector (small, medium, large GGUF)
   • Auto-launch on login toggle
2. Implemented as a Tauri window accessible from the menu bar/tray.
3. Validate hot-key conflicts and model availability.
4. Preference changes take effect without restarting the app.

Rationale

A minimal settings UI keeps the main workflow keyboard-first while allowing deeper configuration when needed.

Acceptance Criteria

• Opening Settings from tray displays window within 200 ms.
• Changing options updates behaviour immediately (e.g. new hot-key active).
• Invalid configurations (missing model file) display inline errors.
• Settings persist after app restart.

Test-Driven Design

Define unit/UI tests for each settings control and validation rule before coding. Implementation is complete when all tests pass.

References

PRD §6 Functional Requirements – FR-6