## MODIFIED Requirements

### Requirement: Runtime Model Discovery Includes Local Readiness
The system SHALL include local runtime readiness and model acquisition state when exposing runtime-discovered local models.

#### Scenario: Local image model is downloaded but runtime is stopped
- **GIVEN** a ComfyUI model file is present in the managed model directory
- **AND** ComfyUI is installed but not running
- **WHEN** runtime model discovery builds local image model entries
- **THEN** the model SHALL remain discoverable as installed
- **AND** its readiness metadata SHALL indicate that the runtime must be started before generation

#### Scenario: Local model is still downloading
- **GIVEN** a model download task is running or resumable
- **WHEN** Model Center requests model assets
- **THEN** the model asset SHALL include download status and progress metadata
- **AND** final generation selectors SHALL not treat the model as runnable until installation/discovery is complete

#### Scenario: Download source changes
- **GIVEN** the user changes the Hugging Face endpoint or mirror in Model Center
- **WHEN** runtime model discovery or model download preflight runs
- **THEN** the selected source SHALL be reflected in model asset metadata and future download tasks
- **AND** already installed models SHALL remain usable without requiring re-download