@sipi/dsh-openai-codex-auth: Provides OpenAI Codex device login capability for DeepSeek Harness

@sipi/dsh-openai-codex-auth is a plugin maintained by z331225718 that adds OpenAI Codex device code login support to the pi-ai routing in DeepSeek Harness (DSH). By providing OAuth storage and an interactive authentication controller, it allows users to use ChatGPT's device login directly on the Models page without an additional model adapter. The installation command is `dsh plugin --profile web add @sipi/dsh-openai-codex-auth`. When using it, note the proxy configuration in Node 24 (`NODE_USE_ENV_PROXY=1`).