v0.1.0 — OpenAI Codex CLI on the aicodebox base

Initial release. CodexAdapter (codex exec --json, sandbox-bypass, native
--output-schema, resume, model_reasoning_effort) honoring systemPrompt,
appendSystemPrompt, noTools, and resume-last continuation. Dual auth:
OPENAI_API_KEY and ChatGPT subscription via codex login. Host wrapper +
installer. Pinned @openai/codex@0.144.6 on psyb0t/aicodebox:v0.14.0.