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Use GPT Image 2.5 Flare and native transparent assets (#786)

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* Use GPT Image 2.5 Flare for image generation

Add explicit model selection and cover generation/edit request provenance. Compare 24 comp samples with Image 2 and Sunburst, documenting efficiency gains and the photo-preservation tradeoff.

Prepared with AI assistance under maintainer instructions.

* Validate native image transparency for asset production

Add repeatable cutout, glass, and reference-plate experiments with alpha measurements and compositing evidence. Record fidelity limits and the remaining asset-producer integration work.

Prepared with AI assistance under the maintainer instructions.

* Add native transparent PNG asset generation

Wire background options through generation and edits, preserve alpha, and update asset production to use supported commands with visual cutout checks.

Prepared with AI assistance under the maintainer's instructions.

* Fix native alpha review findings

Validate PNG paths for all background modes, score sparse and partial alpha over the sampled ground, and correct launcher and plate workflow guidance.

Prepared with AI assistance under the maintainer's instructions.

* Fix launcher paths in comp workflow commands

Quote existing launcher filenames for the target shell while retaining multiword command prefixes. Cover relative and absolute paths and actual shell argument parsing.

Prepared with AI assistance under the maintainer's instructions.

* Remove evaluation artifacts and docs from image PR

Keep the PR focused on runtime behavior, source skill instructions, and regression coverage. Preserve evaluation material locally.

Prepared with AI assistance under the maintainer's instructions.
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Paul Bakaus
2026-09-08 15:52:38 -07:00
committed by GitHub
parent 12ffee04c2
commit 05ef444b7d
10 changed files with 402 additions and 39 deletions
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skill/reference/visualize.md
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@@ -39,7 +39,7 @@ What the comp shows is measured, not remembered. new-work.md section 6 runs the
## Plates and provenance
Every raster region's plate is produced in the plates phase, before any page code, by the shipped asset producer or in the current thread (`impeccable generate-image --plate <id>`, or the harness image tool with the crop as input and the spec's plate prompt). Generation context is part of the asset: after generating any image with any tool, run `{{scripts_path}}/impeccable embed-prompt <image> --prompt "<prompt>"` with the exact string the tool received (`impeccable generate-image` does this itself), so the intent lives inside the file; `--read` recovers it, `--scan <dir>` lists rasters still missing one. The embedded prompt plus the region's row in the spec is the raster's **provenance**, and every raster the artifact references carries it; a sourced, stock, or pre-existing raster embeds its origin instead. A raster created or replaced later, in a fix batch or a reviewer's rebuild, is produced the same way; a raster a fix abandons is deleted in the same batch.
Every raster region's plate is produced in the plates phase, before any page code, by the shipped asset producer or in the current thread (use `impeccable comp-spec --crop <id>` and save `impeccable comp-spec --plate-prompt <id>` to a prompt file; pass the crop and prompt to the harness image tool, or use `impeccable generate-image --ref <crop.png> --prompt-file <prompt.txt> --out <plate.png> --size <WxH> --quality high`). For isolated cutouts, add `--background transparent` to both the plate-prompt and API generation commands; use native PNG alpha and preserve white paint and clear gaps. Use `--background opaque` for full-frame imagery. Create output directories first and inspect alpha on light and dark grounds. Generation context is part of the asset: after generating any image with any tool, run `{{scripts_path}}/impeccable embed-prompt <image> --prompt "<prompt>"` with the exact string the tool received (`impeccable generate-image` does this itself), so the intent lives inside the file; `--read` recovers it, `--scan <dir>` lists rasters still missing one. The embedded prompt plus the region's row in the spec is the raster's **provenance**, and every raster the artifact references carries it; a sourced, stock, or pre-existing raster embeds its origin instead. A raster created or replaced later, in a fix batch or a reviewer's rebuild, is produced the same way; a raster a fix abandons is deleted in the same batch.
Convert images with a converter `impeccable context` reported at boot (the IMAGE_TOOLS line); probe only when it reported none, at most once per session, never per image.