sprite-gen

# Sprite Gen `sprite-gen` builds generic game sprite atlases with a `component-row` pipeline: ```text sprite-request.json -> layout guides + prompts -> image-gen state rows -> chroma alpha -> connected components -> transparent cells -> sprite-sheet-alpha.png + manifest.json.frame_layout ``` Use only the `component-row` pipeline. Do not treat one-shot master sheets, fixed-grid atlas cutting, local drawing, or static fallback as a successful sprite result. ## Script Map The skill uses scripts as explicit pipeline commands, not as hidden imports. Each script has one job: - `prepare_sprite_run.py` — prepare a run from request truth: write `sprite-request.json`, per-state layout guides, prompts, and empty `raw/` and `frames/` folders. - `extract_sprite_row_frames.py` — read generated `raw/<state>.png` strips, remove chroma background, extract connected sprite components, and write transparent frame PNGs plus `frames/frames-manifest.json`. - `compose_sprite_atlas.py` — compose extracted frames into `sprite-sheet-alpha.png` and runtime `manifest.json.frame_layout`. - `preview_animation.py` — build QA previews from extracted frames: contact sheets and state GIFs under `qa/`. - `compose_selected_cycle.py` — record a human-selected frame subset as an explicit selected-cycle manifest plus QA GIF/contact sheet. Reads `curation.json` selection/transform by default; explicit `--frames` overrides it. - `compose_sprite_gif.py` — export a clean transparent GIF from selected frame PNGs ...