feat(copilot-sdk): add OrcaRouter BYOK provider config

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This adds OrcaRouter as a first-class Bring Your Own Key provider option in the copilot-sdk skill, so Copilot SDK users can point the CLI at OrcaRouter without treating it as an anonymous custom base URL.

OrcaRouter is an OpenAI-compatible AI gateway built for both models and agents. Like OpenRouter, it exposes a provider/model namespace across many models — but it also combines adaptive routing, automatic failover, zero-markup inference, observability, guardrails, and agent-tool governance behind the same endpoint. Because the Copilot SDK's BYOK mode already accepts an OpenAI-compatible provider config (the skill documents this for OpenAI, Azure AI Foundry, and Ollama), OrcaRouter plugs straight into that existing wiring as a named provider with a single provider block:

provider: { type: "openai", baseUrl: "https://api.orcarouter.ai/v1", apiKey: process.env.ORCAROUTER_API_KEY }

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.

Verified locally against the live OrcaRouter endpoint (GET https://api.orcarouter.ai/v1/chat/completions returns 200 with a completion).

Discord: discord.gg/YEubt8enRA · X: https://x.com/OrcaRouter

I'm an engineer on the OrcaRouter team.

[Copilot]

Pull request overview

Adds OrcaRouter as a documented OpenAI-compatible BYOK option for the Copilot SDK skill.

Changes:

• Adds an OrcaRouter provider configuration using its API endpoint and environment-based API key.

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