🧹 [Extract standard library HTTP registry exports]

[Tcode-Motion]

🎯 What: Extracted common HTTP request logic in the standard library's register_http into a reusable perform_http_request helper function.
💡 Why: Drastically reduces code duplication across HTTP method handlers (like get and post) for network capability checking, request execution, error mapping, and response construction, significantly improving maintainability.
✅ Verification: Verified by running cargo test --workspace --all-targets to ensure no functional regressions were introduced.
✨ Result: A cleaner, more readable register_http function with unified capability enforcement and error handling.

---

PR created automatically by Jules for task 2099535273832491816 started by @Tcode-Motion

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.