feat(onboard): add custom/local API configuration flow (#11106)

* feat(onboard): add custom/local API configuration flow

* ci: retry macos check

* fix: expand custom API onboarding (#11106) (thanks @MackDing)

* fix: refine custom endpoint detection (#11106) (thanks @MackDing)

* fix: streamline custom endpoint onboarding (#11106) (thanks @MackDing)

* fix: skip model picker for custom endpoint (#11106) (thanks @MackDing)

* fix: avoid allowlist picker for custom endpoint (#11106) (thanks @MackDing)

* Onboard: reuse shared fetch timeout helper (#11106) (thanks @MackDing)

* Onboard: clarify default base URL name (#11106) (thanks @MackDing)

---------

Co-authored-by: OpenClaw Contributor <contributor@openclaw.ai>
Co-authored-by: Gustavo Madeira Santana <gumadeiras@gmail.com>

docs/start/wizard.md

@@ -62,7 +62,8 @@ The wizard starts with **QuickStart** (defaults) vs **Advanced** (full control).
 
 **Local mode (default)** walks you through these steps:
 
-1. **Model/Auth** — Anthropic API key (recommended), OAuth, OpenAI, or other providers. Pick a default model.
+1. **Model/Auth** — Anthropic API key (recommended), OpenAI, or Custom API Endpoint
+   (OpenAI-compatible, Anthropic-compatible, or Unknown auto-detect). Pick a default model.
 2. **Workspace** — Location for agent files (default `~/.openclaw/workspace`). Seeds bootstrap files.
 3. **Gateway** — Port, bind address, auth mode, Tailscale exposure.
 4. **Channels** — WhatsApp, Telegram, Discord, Google Chat, Mattermost, Signal, BlueBubbles, or iMessage.
@@ -104,5 +105,6 @@ RPC API, and a full list of config fields the wizard writes, see the
 ## Related docs
 
 - CLI command reference: [`openclaw onboard`](/cli/onboard)
+- Onboarding overview: [Onboarding Overview](/start/onboarding-overview)
 - macOS app onboarding: [Onboarding](/start/onboarding)
 - Agent first-run ritual: [Agent Bootstrapping](/start/bootstrapping)