refactor(desktop): improve error handling and translation in server error formatting

[OpeOginni]

Issue for this PR

Closes #16168

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

• Updated formatServerError to accept a translation function for better localization, rather than having to pass in the text per error type which im the long term will be a hassle to manage, this way any error can be passed in as as long as it satisfies the condition of a recognised error we are able to send the right error message in the right language.
• Simplified error handling in createGlobalSync and bootstrapGlobal by using the new translation approach.
• Added parsing for Invalid Model Error to show proper error message when the user is using a model not configured in a command

How did you verify your code works?

Tested on the local dev env

Screenshots / recordings

Screen.Recording.2026-03-05.at.12.57.07.mov

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[github-actions]

Hey! Your PR title refactor(desktop_: improve error handling and translation in server error formatting doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍