Add TrustedRouter remote model docs

[jperla]

This pull request adds Jan docs for connecting TrustedRouter as a custom OpenAI-compatible remote provider. TrustedRouter is an open-source, verifiable attested router for privacy-sensitive workflows with zero prompt and output logging by default.

Users can configure the base URL https://api.trustedrouter.com/v1, add a TrustedRouter API key, and use aliases such as trustedrouter/auto, trustedrouter/zdr, or trustedrouter/e2e.

Verification: git diff --check.

[tokamak-pm]

Code Review — First Review

Commit reviewed: 06bd793

Summary

Docs-only PR adding TrustedRouter as an OpenAI-compatible remote model provider. Two files changed: the _meta.json navigation entry and a new trustedrouter.mdx guide.

Findings

1. Structure: Follows the established pattern of other remote-model docs (OpenRouter, Hugging Face, etc.). The _meta.json entry is correctly placed alphabetically between OpenRouter and Hugging Face.
2. Content quality: Clear step-by-step guide with callout, proper MDX imports (Callout, Steps, Settings icon). Base URL and model aliases are documented.
3. No issues found: No broken links within the doc structure, no code changes, no risk of regression.

Minor observations (non-blocking)

• The doc references three routing aliases (auto, zdr, e2e). If TrustedRouter adds more aliases over time, the doc may need updating — but that's expected for any provider page.

Recommendation: can merge

[jperla]

Thanks for the review. The automated review looks mergeable from my side. Is there anything else you would want changed before this can move forward?

[tokamak-pm]

No changes needed from my side. The PR is a clean, docs-only addition that follows the existing provider page pattern. No code changes, no regression risk.

Recommendation: can merge