feat(config): add OrcaRouter gateway template as alternative LLM provider

[XiaoHuo888-hue]

Summary

Add OrcaRouter as an alternative LLM gateway provider for xiaobei, mirroring the existing openclaw-awk.json template.

OrcaRouter is an OpenAI-compatible model gateway: one key routes DeepSeek, GLM, Qwen, Claude, Gemini and other mainstream models, with a single OpenAI-compatible endpoint (https://api.orcarouter.ai/v1). It also runs gateway-level, zero-trust security for AI agents on the same endpoint — screening every prompt/response and governing every tool call on a default-deny basis, with no application code changes.

Changes

• config-templates/openclaw-orcarouter.json (new): alternative OpenClaw config template with a named orcarouter provider — baseUrl: https://api.orcarouter.ai/v1, api: openai-completions, apiKey: ${ORCAROUTER_API_KEY}, and curated models (orcarouter/auto, orcarouter/fusion, orcarouter/fusion-mini, orcarouter/fusion-flash, orcarouter/free, orcarouter/open-code, orcarouter/code-review). Structured exactly like the existing openclaw-awk.json/openclaw.json templates.
• docker/docker-entrypoint.sh: made API-key rendering provider-aware. Each configured provider now gets its own key env var (AWK_API_KEY → bailian-token-plan/awk, ORCAROUTER_API_KEY → orcarouter), and the required-key check validates whichever provider the active openclaw.json actually uses (so the OrcaRouter template no longer requires AWK_API_KEY).
• docker/docker-compose.yml / docker/.env.example: pass through ORCAROUTER_API_KEY.
• README.md, config/README.md, config/.env.template: document the OrcaRouter alternative template and key.

Usage

Copy config-templates/openclaw-orcarouter.json to ~/.openclaw/openclaw.json (or swap it into the Docker seed), set ORCAROUTER_API_KEY (starts with sk-orca-) in .env, and start as usual.

Verification

• JSON valid (all templates parse).
• Entrypoint syntax validated; provider-aware key check + rendering tested end-to-end with a real openclaw.json from the template.
• No CRLF; git diff --check clean.
• Live API check: POST https://api.orcarouter.ai/v1/chat/completions with model: orcarouter/auto using a real key → HTTP 200, OpenAI-compatible response.

Disclosure: I'm an engineer on the OrcaRouter team.

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