Use the same ToolTip instance in ToolTipService and the hover timer, check the loaded target, and exercise actual hover/text/exit with UI-error assertions. Remove completed timing diagnostics while preserving all prior cases/assertions/deadlines. Refs #32, #28. Co-Authored-By: GPT-6 <noreply@openai.com> Signed-off-by: James Maes <jmaes@dmdbrands.com>