Closes: #1718
Resolves MOB-1039 and MOB-1098

Summary

• Redesigned Server Setup with an Automatic/Manual connection mode toggle
• Automatic mode: App auto-evaluates the best server for wallet sync. Users don't need to know or care which server is fastest
• Manual mode: User selects a single server for sync
• Migration: users with a custom server default to Manual (preserving privacy); all others default to Automatic
• Server benchmark on app launch silently switches to the best available server in automatic mode
• Applies consistent streaming timeout to all known endpoints

Test plan

Below is my manual testing session. Here is what a user would see that does not have a custom server selected before this update. I also tested the case where a user has a custom manual server and ensure that they do not get pushed to automatic. I didn't record that but can record if needed.

Author

• Self-review: Did you review your own code in GitHub's web interface?
• Does the code abide by the Coding Guidelines?
• Automated tests: Did you add appropriate automated tests for any code changes?
• Code coverage: Did you check the code coverage report for the automated tests?
• Documentation: Did you update Docs as appropriate?
• Run the app: Did you run the app and try the changes?
• Did you provide Screenshots of what the App looks like before and after your changes as part of the description of this PR?
• Rebase and squash: Did you pull in the latest changes from the main branch and squash your commits before assigning a reviewer?

Reviewer

• Checklist review: Did you go through the code with the Code Review Guidelines checklist?
• Ad hoc review: Did you perform an ad hoc review?
• Automated tests: Did you review the automated tests?
• Manual tests: Did you review the manual tests?
• How is Code Coverage affected by this PR?
• Documentation: Did you review Docs, README.md, LICENSE.md, and Architecture.md as appropriate?
• Run the app: Did you run the app and try the changes?