gatsby-plugin-manifest short_name length enforcement

Short name length enforcement

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When configuring gatsby-plugin-manifest, developers often set the short_name to a value that exceeds the 12‑character limit defined by the Web App Manifest specification. The plugin accepts the value without warning, producing a manifest that is syntactically valid but may be rendered incorrectly by browsers.

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Because the generated manifest.webmanifest contains the full string, Android home‑screen icons may truncate or wrap the label, breaking branding consistency. This behavior is undocumented and varies across browsers, leading to a fragile user experience.

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Unresolved questions:

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• Should Gatsby introduce a validation step that warns or rejects short_name values longer than 12 characters?
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• Is there a configuration option that could automatically truncate or enforce the spec limit?
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• Which browsers currently handle over‑long short_name values, and how do they differ?
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