Design Harness v0.2.1
This patch restores reproducible clean installation without changing the
published v0.2.0 archive.
Important
Use the checksum printed below for the downloadable Release asset. GitHub's
automatically generated source archive is an immutable snapshot of the
pre-publication tag and its video/DEMO_RUNBOOK.md still contains the local
macOS pack checksum. The installable asset itself is correct and was not
replaced. The current runbook
contains the public asset checksum.
What changed
- Impeccable now comes from the official versioned, SHA-256-pinned
skill-v4.0.4/universal.zipGitHub Release asset. - The complete Impeccable archive is verified against pinned SHA-256 before
its CLI can read it. - Download, checksum, cleanup and scoped rollback failures are reported
independently without masking the primary error. - User-scope Codex and Claude installations now follow the actual destinations
used by the pinned upstream CLIs. - Public install smoke tests cover Ubuntu and macOS for each published Release,
plus a daily Ubuntu check of the latest stable Release. - Installation commands and video-production documents now use
v0.2.1.
Verification
- Test suite:
75/75 - Package payload:
60/60 - Package SHA-256:
650544195852ca8bc675d724b74e66edf35f6a212ae48c33e0eea8d346462877 - Uncompressed tar payload SHA-256:
c487a8016e2ef52511b17fe9e8cfcb56bc36523e707e3f2eb8b42eb23438be70 - Pinned Impeccable archive SHA-256:
bc190f6e1b31c2578013546768903c0babf1af5a6d397c4131f2f2c7c298e770
Public release evidence
The candidate was published first as a prerelease. A trusted release dispatch
bound its tag to the manifest SHA-256, then the exact downloaded asset passed
fresh Codex installation and check --installation-only on Ubuntu and macOS
with Node.js 22.20.0. It was promoted to stable only after both jobs passed.
- Result: passed on 2026-08-07.
- Exact mode:
--host codex. - Evidence: GitHub Actions run 31169086066.
- Full record: public matrix and two independent local cold installs.