Initial TrueGrowth source import

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

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+## 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