Environment: Linux x86_64; Node 26.12.1; native x64 AppImage/deb packaging.
$ node scripts/build-desktop-artifact.ts --platform linux --target AppImage --arch x64 --skip-build --keep-stage --output-dir <proof-output>/head-artifacts ⊘ cache disabled
[03:42:03.814] INFO (#1): [desktop-artifact] Applied production web client branding.
[03:42:03.816] INFO (#1): [desktop-artifact] Staging release app...
[03:43:44.750] INFO (#1): [desktop-artifact] Installing staged production dependencies...
[03:43:45.519] INFO (#1): [desktop-artifact] Building linux/AppImage (arch=x64, version=0.1.8)...
[03:44:38.402] ERROR (#1): BundleNotSelfContainedError: The packaged server bundle could not load from the isolated, extracted sidecar (exit 1). Anything it imports that is neither a Node built-in nor in the selected runtime-external closure is unavailable to both backends. Output:
node:internal/modules/package_json_reader:343
  throw new ERR_MODULE_NOT_FOUND(packageName, fileURLToPath(base), null);
        ^

Error [ERR_MODULE_NOT_FOUND]: Cannot find package 't3-release-proof-missing-package' imported from <proof-output>/t3code-bundle-selfcheck-PGXLYO/app/apps/server/dist/bin.mjs
    at Object.getPackageJSONURL (node:internal/modules/package_json_reader:343:9)
    at packageResolve (node:internal/modules/esm/resolve:751:25)
    at moduleResolve (node:internal/modules/esm/resolve:840:18)
    at defaultResolve (node:internal/modules/esm/resolve:973:11)
    at #cachedDefaultResolve (node:internal/modules/esm/loader:708:20)
    at #resolveAndMaybeBlockOnLoaderThread (node:internal/modules/esm/loader:728:38)
    at ModuleLoader.resolveSync (node:internal/modules/esm/loader:766:56)
    at #resolve (node:internal/modules/esm/loader:690:17)
    at ModuleLoader.getOrCreateModuleJob (node:internal/modules/esm/loader:610:35)
    at ModuleJob.syncLink (node:internal/modules/esm/module_job:277:33) {
  code: 'ERR_MODULE_NOT_FOUND'
}

Node.js v26.12.1
    at Object.BuildCommandFailedError (file://<head-checkout>/scripts/build-desktop-artifact.ts:2278:13)
    at file://<head-checkout>/node_modules/.pnpm/effect@4.1.2/node_modules/effect/dist/internal/effect.js:1499:27
    at verifyPackagedBundleIsSelfContained (file://<head-checkout>/scripts/build-desktop-artifact.ts:3716:12)
    at verifyPackagedBundleIsSelfContained (definition) (file://<head-checkout>/scripts/build-desktop-artifact.ts:2212:59)
    at desktopArtifact.validateLinuxPackagedPayload (file://<head-checkout>/scripts/build-desktop-artifact.ts:4221:12)
    at desktopArtifact.validateLinuxPackagedPayload (definition) (file://<head-checkout>/scripts/build-desktop-artifact.ts:3586:52)
    at buildDesktopArtifactUnlocked (file://<head-checkout>/scripts/build-desktop-artifact.ts:4255:48)
    at buildDesktopArtifactUnlocked (definition) (file://<head-checkout>/scripts/build-desktop-artifact.ts:3725:45)
    at withDesktopBuildLock (file://<head-checkout>/scripts/build-desktop-artifact.ts:4255:17)
    at withDesktopBuildLock (definition) (file://<head-checkout>/scripts/build-desktop-artifact.ts:1802:37)
    at buildDesktopArtifact (file://<head-checkout>/node_modules/.pnpm/effect@4.1.2/node_modules/effect/dist/internal/effect.js:1103:10)
    at buildDesktopArtifact (definition) (file://<head-checkout>/scripts/build-desktop-artifact.ts:4251:37)


Observed process exit status: 1
Release output directory: absent; no artifacts copied.