Blender Showcase Reproduction

Use scripts/reproduce.sh to select one exact recipe. The command is a dry run unless the user explicitly authorizes --execute.

The packaged public catalog is metadata-only. It records the current public showcase identity, input bindings, dynamic acceptance contracts, known gaps, and distribution policy; it contains no source assets or tutorial media. A public preview URL is acceptance evidence, not permission to download or reuse the asset. A recipe that is disabled, blocked, incomplete, or not independently accepted must fail before download, model invocation, or Blender execution.

Tutorial inputs

• For an authorized existing tutorial, use --tutorial-mode provided and one or more --tutorial files. The operational truth is tutorial.md plus steps_verified.json.
• To extract an operational tutorial from video, explicitly use --tutorial-mode extract, --video-url, at least one --image, and a positive --tutorial-window-budget. Extraction delegates to the sibling tutorial extraction skill, defaults to the balanced profile and gpt-5.6-sol. The supplied video-to-visual-tutorial skill produces a complete procedure; a compatibility adapter supplies the existing replay files. gpt-5.5 is an explicit whole-run fallback only and requires --tutorial-fallback-reason.
• Paid extraction requires BLENDER_PIPELINE_API_ENDPOINT and an owner-only secret file named by BLENDER_PIPELINE_API_KEY_FILE. Dry runs do not read credentials, download media, call a model, or write a run directory.
• Add --render-tutorial-html only when a human-facing display copy is useful. It is rendered from the same complete Markdown without a second model call and never replaces tutorial.md.

Asset delivery

Follow the selected recipe's distribution_contract.asset_delivery exactly:

• bundled-open: allowed only with package-local source, exact hash, SPDX identifier, and package-local license evidence.
• user-supplied: require a lawful local --asset; never fetch, publish, or commit it or the isolated staged copy.
• blocked: stop. An adapter, public URL, or matching-looking asset does not unlock the recipe.

Read references/execution-contract.md when adding a recipe or diagnosing a validation failure.