publish.mjs packs the fifteen served files with one fixed mtime (reproducible; the self-test checks it), hashes, signs
the entry through igneum-ota-sign sign-ui with the key in ~/.config/igneum (never read or printed here), copies the
bundle into the folder's ui/ and hands ui.json to publish-manifest.sh --ui, the one writer of the signed manifest,
which verifies the entry and the bundle's hash before signing; --dry-run writes nothing, --verify reads the live
manifest back against dl/<token>/ui and dl/public/ui; --no-ui withdraws the channel. Both self-tests sit on the one
gate. docs/plans/ui-ota.md: the shape, the engine, the security notes, the operator recipe, the tests, per tier.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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