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← Engineering Project OSCONTENT HISTORY

Update to Engineering Project OS

Snapshot Oct 1, 2026 · 06:02 UTC · version 2.2.1

WHAT CHANGED · RULE-BASED ANALYSIS

Package or technical metadata updated

Package contents changed in 20 files: .codex-plugin/plugin.json, CHANGELOG.md, CONTRIBUTING.md, …. Open the file diff to inspect the edits.

Observed in package metadata. These changes alone do not establish a new customer-facing feature.

Package file

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Changed files

.codex-plugin/plugin.json →

CHANGELOG.md →

CONTRIBUTING.md →

README.md →

SECURITY.md →

docs/HOW_IT_WORKS.md →

docs/PACKAGING.md →

docs/REFERENCE.md →

docs/SETUP.md →

docs/USAGE.md →

plugin.json →

scripts/package_plugin.py →

skills/project-os/SKILL.md →

skills/project-os/assets/templates/core/.agents/WORKFLOW.md →

skills/project-os/assets/templates/core/.agents/plans/README.md →

skills/project-os/evals/README.md →

skills/project-os/evals/continuity.json →

skills/project-os/evals/prepare_fixture.py →

skills/project-os/references/maintenance.md →

skills/project-os/scripts/project_os.py →

docs/SETUP.md

--- before
+++ after
@@ -68,9 +68,9 @@
 
 Ordinary engineering work now uses ordinary requests. Use `$project-os` when the request concerns Project OS maintenance, durable plan state, findings, evidence, knowledge or Program lifecycle.
 
-## Upgrade from 2.1.1 to candidate 2.2.0
+## Upgrade from 2.1.1 to candidate 2.2.1
 
-Candidate 2.2.0 introduces SYSTEM schema 5, plans schema 2, JSON acceptance contracts, durable request intake and guarded plan completion. Knowledge transfer formats remain unchanged. The candidate is not published by this source checkout; use the versioned installed helper after publication or explicitly test the candidate helper in an isolated fixture.
+Candidate 2.2.1 introduces SYSTEM schema 5, plans schema 2, JSON acceptance contracts, durable request intake and guarded plan completion. Knowledge transfer formats remain unchanged. The candidate is not published by this source checkout; use the versioned installed helper after publication or explicitly test the candidate helper in an isolated fixture.
 
 First update the installed Directory plugin, then start a new Codex task in the repository and type:
 
@@ -78,7 +78,7 @@
 $project-os upgrade
 ~~~
 
-Codex must use the installed 2.2.0 helper transaction:
+Codex must use the installed 2.2.1 helper transaction:
 
 ~~~text
 python3 /absolute/path/to/project-os/scripts/project_os.py upgrade --target /path/to/repository --dry-run
@@ -110,7 +110,7 @@
 Use this route only when a standalone Codex-only installation is required. Send the following message in Codex chat, not Terminal:
 
 ~~~text
-$skill-installer Install project-os from https://github.com/innrvoice/engineering-project-os/tree/v2.2.0/skills/project-os
+$skill-installer Install project-os from https://github.com/innrvoice/engineering-project-os/tree/v2.2.1/skills/project-os
 ~~~
 
 Start a new Codex task after installation. Use this candidate URL only after the versioned tag is published. It does not follow `main` automatically.
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