Design stage: there is no released app yet. This site separates what exists in the repository from what is planned. See status

Launcher, packaging and logistics / PKGR: Simca Packaging Engine, Package Spec & Website Front Door

Why would a shop need “Build cache keyed by spec hash”?

Planned: listed in the catalog, not built C0540

For Build cache keyed by spec hash (PKGR-0046) the catalog says: Finished packages are cached under the hash of the normalised package spec. It is core priority within “Paired development rule and build delivery” and sits in both Lite and Pro. It is not a feature yet.

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How to read this

The tag above says how real the answer is. Answers describe the plan in the repository and design documents. No app is released. Where an answer touches tax or law, treat it as a theme to verify with a qualified local adviser.

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