ECC 2.2.0

fix(release): stage the plugins/ecc Codex manifest when bumping

update_version rewrote plugins/ecc/.codex-plugin/plugin.json on disk, but
CODEX_MARKETPLACE_PLUGIN_JSON was missing from the git add list, so the bump
was never committed. The tag then carried a 2.0.0 manifest and
plugin-manifest.test.js failed the release in CI.

Also commits the 2.1.0 value the previous run left uncommitted.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0149VwNuynam6rvEfcMmiHHa

ECC 2.0.0 — the agent harness operating system

chore: export marketing campaign command

chore: ship v1.10.0 release surface refresh

chore: prepare v1.9.0 release (#666)

- Bump version to 1.9.0 in package.json, package-lock.json, .opencode/package.json
- Add v1.9.0 changelog with 212 commits covering selective install architecture,
  6 new agents, 15+ new skills, session/state infrastructure, observer fixes,
  12 language ecosystems, and community contributions
- Update README with v1.9.0 release notes and complete agents tree (27 agents)
- Add pytorch-build-resolver to AGENTS.md agent table
- Update documentation counts to 27 agents, 109 skills, 57 commands
- Update version references in zh-CN README
- All 1421 tests passing, catalog counts verified

Merge pull request #334 from affaan-m/codex/release-1.8.0-core

feat: v1.8.0 harness release (core reliability + parity + new commands)

ECC v1.7.0 — Cross-Platform Expansion & Presentation Builder

ECC v1.6.0 — Codex Edition

ECC v1.5.0 - Universal Edition