# Data Model: VPS Image Migration

## Host Profile

- **Purpose**: Defines a named system configuration (e.g., vps).
- **Key fields**:
  - `name` (string, unique)
  - `target_environment` (string, e.g., Linode)
  - `services_required` (list of service identifiers)
  - `secrets_required` (list of secret identifiers)

## Image Artifact

- **Purpose**: Represents a build output used to provision a VPS.
- **Key fields**:
  - `image_type` (string, Linode-compatible)
  - `build_reference` (string, build timestamp or revision)
  - `host_profile` (reference to Host Profile)

## Bootstrap Secret Material

- **Purpose**: Material required to unlock secrets on the host.
- **Key fields**:
  - `bootstrap_method` (enum: generated-on-host)
  - `recipient_public_key` (string)
  - `enrollment_status` (enum: pending, enrolled)

## Deployment Target

- **Purpose**: The environment where the image is launched.
- **Key fields**:
  - `provider` (string)
  - `region` (string)
  - `instance_id` (string)

## Rebuild Trigger

- **Purpose**: Represents an authorized rebuild action for the VPS.
- **Key fields**:
  - `actor` (string)
  - `requested_at` (datetime)
  - `status` (enum: queued, running, succeeded, failed)

## Relationships

- Host Profile 1..* Image Artifact
- Host Profile 1..* Bootstrap Secret Material
- Deployment Target 1..1 Image Artifact
- Rebuild Trigger *..1 Host Profile