Improve reference docs for InternalProxy

[predic8]

Summary

• Rewrite @description: remove <p> wrappers, sharpen first sentence to stand alone, add the internal://name URL scheme and the "shared flow logic" use-case
• Add @yaml with a three-document example showing the realistic shared-auth pattern: an internal: proxy that injects a downstream X-Api-Key and routes to a real service, consumed by two api: elements on different ports

Test plan

• mvn -q -o -pl core compile passes (verified locally)
• @yaml is valid YAML (three ----separated documents)

🤖 Generated with Claude Code

[coderabbitai]

Warning

Review limit reached

@predic8, you've reached your PR review limit, so we couldn't start this review.

Next review available in: 12 minutes

Enable usage-based reviews in Billing to review now. Otherwise, wait until the next included review is available.
You're only billed for reviews past your plan's rate limits ($0.25/file).

How can I continue?

After more reviews become available, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

To avoid repeated limits, reduce automatic review volume by pausing incremental auto-reviews earlier, using label-based review opt-in, excluding WIP or generated PR titles, or requesting reviews manually when the PR is ready. If your team needs uninterrupted high-volume reviews, an organization admin can enable usage-based reviews.

How do review limits work?

CodeRabbit enforces per-developer PR review limits for each organization. Most developers receive the normal plan review availability.

For paid Pro and Pro+ PR reviews, CodeRabbit uses adaptive limits for sustained high-volume activity. When a developer's recent PR review activity reaches the 95th percentile or higher among CodeRabbit users, additional reviews become available more gradually as earlier reviews age out of the rolling window.

Please refer docs for additional details.

Review details

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: efffda26-dd0c-4d2d-baaa-33dcff6f54ef

📥 Commits

Reviewing files that changed from the base of the PR and between b71f1fc and e1dcfe0.

📒 Files selected for processing (1)

• core/src/main/java/com/predic8/membrane/core/proxies/InternalProxy.java

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/internal-proxy

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[membrane-ci-server]

This pull request needs "/ok-to-test" from an authorized committer.

[rrayst]

/ok-to-test