## Why
Hiding an already-visible working tip during mouse selection shifts the transcript layout and disrupts selection.
## What changed
Keep displayed working tips visible while interacting with the transcript or scrolling away from the latest output. Initial tip display and completion tips still require an idle viewport following the latest output.
Check usage notices directly when suppressing tips so a tip cannot appear merely because interaction temporarily hides the composer warning.
## Testing
Add a mouse-selection regression test and snapshot covering deferred initial display, stable transcript rows through mouse down, drag, and release, correct selected text, and continued tip suppression when a usage warning is hidden during interaction.
GitOrigin-RevId: 3cee527f3a7daaccecbeedbdf083c61075dfa32f