[Copilot]

The interpreter picker waited for every environment manager to finish discovery, allowing an unrelated slow manager to block known choices such as the recommended interpreter and Browse....

• Responsive discovery

  • Show the picker immediately with known choices.
  • Discover environments concurrently and add results as managers complete.
  • Preserve manager ordering.

• Stable interaction

  • Display a loading indicator during discovery.
  • Preserve focus, selection, and scroll position across updates.
  • Ignore late results after dismissal or navigation.

• Failure isolation

  • Log individual manager failures without hiding healthy choices.
  • Keep the picker usable when discovery remains pending or fails.

• Fixes Interpreter picker waits for unrelated environment discovery #1891