FAQ: setup, start, upgrades, and diagnostics

[JetXu-LLM]

This is the pinned FAQ entry for Codex DeepSeek Bridge.

Read the official FAQ here:
https://github.com/JetXu-LLM/codex-deepseek-bridge/blob/main/docs/faq.md

It covers:

• Whether to run setup, start, or upgrade
• What to do if the bridge process stopped
• WebSocket / GET /v1/responses errors fixed in v0.1.26
• doctor, doctor --live, and the local report
• Custom in the Codex picker
• DeepSeek API key input and storage
• macOS Keychain prompts after the optional Desktop patch
• restore and restore --purge
• What to include in a bug report

Please do not paste API keys, bearer tokens, full prompt payloads, private logs, or secrets in public issues.