• Read both licence files in full: top-level LICENSE is BSD-3-Clause, 'Copyright (c) 2023, Extism'; extism/LICENSE is BSD-3-Clause, 'Copyright 2022 Dylibso, Inc.' Both match their debian/copyright stanzas, including the short name BSD-3-clause and the full text reproduced in the file.
• Grepped the whole tree (gitignore: false) for Copyright, (C), ©, SPDX-License-Identifier, 'Licensed under', 'Permission is hereby granted', GNU GPL/LGPL, Apache License, Mozilla Public, 'public domain' and 'All rights reserved': the only hits are those two LICENSE files, the packaging, and the Debian patch's own text. No file carries a notice that debian/copyright omits or contradicts.
• The scan's copyright-holder check listed no files (it found every scanned holder named); that is consistent with my own grep, so there is nothing from the scan to account for file by file.
• debian/copyright begins with exactly Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/, so it is DEP-5 and no replacement was proposed.
• Files-Excluded entries (extism-runtime.wasm, plugins/noop/throw.wasm, wasm) are absent from the unpacked tree, and neither orig tarball contains a prebuilt .wasm. The .pc/ tree and debian/cargo-checksum.json were ignored throughout.
• The shipped generated artefacts have their sources: extism-runtime.wasm is built by debian/rules from extism/kernel/src/lib.rs, src/bin/extism-runtime.rs and extism-context.wat (present from the orig-extism component, v1.7.0, with its LICENSE), and testdata/kernel.wasm is built from testdata/kernel.wat.
• Files-Excluded-extism is not a draft field: uscan(1) documents Files-Excluded-component for per-component exclusions (Files-Excluded-bar: example), and the extism component tarball indeed holds only kernel/ and LICENSE.
• Tree inventory covered every file (77 files, including .github/, .vscode/, .gitignore, plugins/*/go.mod|go.sum and extism/kernel/.cargo/config.toml); there is no vendored third-party code apart from the Extism kernel in extism/, and the dependency modules (wazero, observe-sdk, glob, testify) are imported, not copied.
• Packaging references: XS-Go-Import-Path matches go.mod's module github.com/extism/go-sdk; the patch has DEP-3 headers (Description, Author, Forwarded: not-needed, Last-Update); no maintainer scripts or debian/tests are needed, the pkg-go autopkgtest rebuilds the package and so runs the kernel tests through dh_auto_test.
• Build-Depends exist in unstable: golang-github-tetratelabs-wazero-dev 1.12.0, golang-github-gobwas-glob-dev 1.0.0, golang-github-stretchr-testify-dev, wasm-tools 1.239.0, binaryen 131, wabt 1.0.42, lld, rustc and libstd-rust-dev-wasm32 (1.97.1), dh-go 1.69, and dpkg-dev provides dpkg-build-api (= 1). golang-github-dylibso-observe-sdk-dev is not in the archive but is built by golang-github-dylibso-observe-sdk 0.0~git20240819.2d926c5+ds-1, waiting in NEW, so it is not a fault.
• Not running upstream's tests is justified: their plugins need github.com/extism/go-pdk, which no package in the archive provides, and TinyGo has no binary package, so the wasm/ plugins are excluded from the orig; debian/rules instead builds a small WAT plugin and runs only TestDebianKernel*.
• Standards-Version 4.7.4 matches the reviewing system's Policy 4.7.4.1. debian/gbp.conf's dist = DEP14 is the special value gbp documents for deriving the pbuilder distribution from a DEP-14 branch (gbp/scripts/buildpackage.py, get_pbuilder_dist), not a wrong distribution name.
• uscan found the packaged version as the newest upstream release (upstream 1.7.1, packaged 1.7.1+ds).

• No build or test was run (read-only review): that wasm-strip is shipped by wabt and wasm-merge by binaryen, and that go-sdk 1.7.1 compiles against wazero 1.12.0 rather than the v1.9.0 its go.mod names, were not exercised; only the packages' existence in the archive was checked.

None.