feat(install): add guided multi-harness installer (#2649)

* feat(install): add guided Claude plugin setup

* fix: support Claude command shims on Windows

* feat: support safe Claude plugin scope migration

* fix(install): preserve interactive setup terminal

* fix(install): auto-migrate setup scope changes

* feat(install): add guided multi-harness installer

* fix(install): sync Yarn binary metadata

* fix(install): handle wizard EOF on Node 18

* ci: allow installer matrix tests to finish

* test(install): allow slower PowerShell delegation

* fix(install): harden guided provider reconciliation

* test(install): harden packaged and local compatibility

* chore: prepare guided installer release 2.2.0

* fix(install): report refreshed Codex marketplace state

* fix(install): verify managed content provenance

* test(install): allow empty Yarn smoke fixture

* test(install): invoke Windows package shims safely

* fix(install): close cross-platform release gaps

* fix(install): require trusted GitHub origins

* fix(install): preserve hook profile precedence

* refactor(install): centralize trusted GitHub origins

* ci: retrigger workflow run after merge of main

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

plugins/ecc/.codex-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "ecc",
-  "version": "2.1.0",
+  "version": "2.2.0",
   "description": "Harness-native ECC workflows for Codex: shared skills, production-ready MCP configs, and selective-install-aligned conventions for TDD, security scanning, code review, and autonomous development.",
   "author": {
     "name": "Affaan Mustafa",

plugins/ecc/README.md

@@ -1,10 +1,11 @@
-# plugins/ecc — Codex Repo-Marketplace Plugin Target
+# plugins/ecc — Legacy Codex Thin-Plugin Artifact
 
-This directory is the plugin folder that `.agents/plugins/marketplace.json`
-points at. Codex does not discover plugins whose local marketplace
-`source.path` is the marketplace root itself (`./`), so the marketplace entry
-must target a concrete plugin subdirectory — verified against Codex CLI
-0.137.0 and the official plugin docs (`$REPO_ROOT/plugins/<name>`).
+This directory is retained as a legacy compatibility artifact. The current
+`.agents/plugins/marketplace.json` points at the self-contained repository root,
+which Codex 0.146.0 accepts and copies with all referenced runtime content.
+Do not point the active marketplace back at this thin directory: its
+parent-relative references are valid in a checkout but escape the isolated
+plugin cache after installation.
 
 ## Single source of truth
 
@@ -26,12 +27,10 @@ bumps both.
 
 ## Current Codex plugin-mode status
 
-With this layout, `codex plugin marketplace add affaan-m/ECC` discovers and
-installs `ecc@ecc`. Runtime skill loading from repo marketplaces is still
-unreliable upstream — Codex copies only the plugin folder into its install
-cache, and local/personal marketplace plugins are not always exposed at
-runtime (see [openai/codex#26037](https://github.com/openai/codex/issues/26037)
-and [affaan-m/ECC#2128](https://github.com/affaan-m/ECC/issues/2128)).
+The native marketplace now installs from the repository root. A fresh Codex
+0.146.0 cache contains the configure skill, shared skills, MCP configuration,
+hooks, scripts, and assets, and an authenticated session loads the
+`configure-ecc` skill without hook failures.
 
 After install, `codex plugin list` is not enough to prove the runtime can load
 the referenced skills and assets. From an ECC checkout, run:
@@ -44,8 +43,8 @@ The check inspects the installed cache under `CODEX_HOME` (or `~/.codex`) and
 fails if `.codex-plugin/plugin.json` points at files that were not copied into
 that cache entry.
 
-Until the upstream discovery issues settle, the supported Codex path is the
-manual sync flow documented in the README:
+The manual sync flow remains available only as a separate legacy compatibility
+path when copied/merged home configuration is explicitly desired:
 
 ```bash
 npm install && bash scripts/sync-ecc-to-codex.sh