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>

agent.yaml

@@ -1,6 +1,6 @@
 spec_version: "0.1.0"
 name: ecc
-version: 2.1.0
+version: 2.2.0
 description: "Initial gitagent export surface for ECC's shared skill catalog, governance, and identity. Native agents, commands, and hooks remain authoritative in the repository while manifest coverage expands."
 author: affaan-m
 license: MIT