feat: verify SDLC Wizard works in Codex CLI (codex-sdlc-wizard parity)

[BaseInfinity]

What

Verify the SDLC Wizard plugin works when installed in OpenAI Codex CLI. We have a sibling repo BaseInfinity/codex-sdlc-wizard but the main wizard's plugin format may also work directly.

Test

1. Install via codex --plugin-dir ./cowork or equivalent Codex plugin mechanism
2. Verify skills load and hooks fire
3. Compare with codex-sdlc-wizard — is the sibling still needed or can the main plugin serve both?

Context

• codex-sdlc-wizard is at v0.7.x with its own AGENTS.md and install.sh
• The main wizard's .claude-plugin/ format may or may not be compatible with Codex
• If compatible, consider deprecating the sibling in favor of a single plugin

[BaseInfinity]

Milestone-boundary triage, 2026-08-08. Overtaken by events. BaseInfinity/codex-sdlc-wizard exists, ships, and is used daily — parity is lived, not pending. Open since 2026-06-29 asking whether a thing works that has since been running in production for weeks. Concrete cross-harness work now lives in #516.