Constant blinking screen when building for desktop

## Feature Request

Hi!

When building with an LLM for desktop, instead of just reloading the content the full windows restart.

For every single feature I add and llm save file there's a full reload cycle.
It's thousand of blinking windows at the end of a session.

The more complex the feature is the most it consume CPU and instant blink without even navigate.

## Implement Suggestion

Reload on the content of the window frame and if possible debounce and offer a control to avoid useless rebuild.

Thanks

Start by reproducing the repeated full-window reload while building a desktop app and observe which build or reload entry point triggers it. Compare the requested content-only refresh with the current behavior, then define done as avoiding unnecessary full-window restarts, reducing blinking and CPU use, and providing the requested debounce or control if feasible.

Written by the indexing model from the issue text.