TrueGrowth/openspec/changes/add-local-image-provider/specs/image-generation/spec.md

ADDED Requirements

Requirement: Pass Local Image Extension Parameters

The system SHALL pass common local image runtime parameters through generic OpenAI-compatible image generation requests.

Scenario: Local image request includes advanced parameters

• GIVEN an image generation request includes negative_prompt, steps, cfg_scale, or seed
• AND the selected binding uses openai.image.basic-json
• WHEN the image adapter sends /images/generations
• THEN the request body SHALL include those parameters alongside model, prompt, and size

Requirement: Keep Generated Local Images In Existing Results Flow

The system SHALL handle local image generation results using the existing task and media result flow.

Scenario: Local provider returns image data

• GIVEN a local OpenAI-compatible image service returns image URLs or base64 image data
• WHEN the image task completes
• THEN the task result SHALL be normalized like online provider image results
• AND the image SHALL remain eligible for canvas insertion and media library reuse

Requirement: Apply Installed Local Image Models From Model Center

The system SHALL allow installed local image model assets to be applied as the default image generation model.

Scenario: User applies local image model

• GIVEN a local image model asset is installed in Model Center
• WHEN the user selects "apply to image generation"
• THEN the system SHALL create or update a no-auth OpenAI-compatible local image provider profile
• AND add the model to that provider catalog
• AND set the active image invocation route to that model